January

January 2012
Volume 14, No.1
The Most Powerful Production Camaro Ever
The 2012 Chevrolet Camaro ZL1’s supercharged 6.2L V8 engine is SAE-rated at 580 horsepower and 556 lb.-ft. of torque, making it the most powerful production Camaro ever.
The 2012 Camaro ZL1 surpasses the advertised power of the legendary 1969 Camaro ZL1
427 cubic-inch big block by more than 150 horsepower – while meeting modern emissions
requirements.
The ZL1’s outstanding power is complemented by advanced powertrain and chassis technologies, including exclusive Performance Traction Management and a third-generation Magnetic Ride Control system. Track-capable standard equipment includes a highperformance fuel system as well as engine, transmission and differential coolers.
Supercharged V8
The ZL1 is equipped with a 6.2-liter
supercharged V8 engine (RPO LSA) that
is rated at 580 horsepower and 556 lb.-ft
of torque and is available with the standard six-speed manual (RPO MG9) or
optional Hydra-Matic® 6L90 automatic
(RPO MYD) transmission. This engine
features an intercooled supercharger
system and premium heat-resistant
aluminum-alloy cylinder heads. It also
features hypereutectic pistons with
forged connecting rods, piston cooling
oil squirters, standard oil cooler and deep
sump oil pan.
continued on page 2
Supercharged LSA V8 engine
generates 580 HP
Contents
2012 Camaro ZL1 . . . . . . . . . . . . . . . . . . . . . . .1
Noticeable Difference in Audio Volume Level . .4
Steering Noise in Cold Temperatures . . . . . . . .4
Intermittent Audio Device Operation . . . . . . . . .4
Trunk Rattle Noise . . . . . . . . . . . . . . . . . . . . . . .4
Programming Tips for Remote
Keys/Transmitters . . . . . . . . . . . . . . . . . . . . . . .5
Too Much of a Good Thing: Using RTV Sealer . .5
Power Steering System Conversion
to Dexron VI . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Brake Fluid Level Switch . . . . . . . . . . . . . . . . . .5
Oil Feed Restrictor Orifice Information . . . . . . .6
A/C Condenser Will Not Mate with
Low Side Suction Line . . . . . . . . . . . . . . . . . . . .6
Airbag Readiness Light . . . . . . . . . . . . . . . . . . .6
Voice Recognition Performance . . . . . . . . . . . . .7
Stop and Turn Lamp Options/
Diagnostic Information . . . . . . . . . . . . . . . . . . . .7
Installing GM Accessory Illuminated Sill Plates .7
Car Issues – Fix It Right the First Time . . . . . . .8
Truck Issues – Fix It Right the First Time . . . . . .9
Service Know-How . . . . . . . . . . . . . . . . . . . . . . .9
Customer Care and Aftersales
2012 Camaro ZL1 –
continued from page 1
Its 1.9L Roots-style blower uses an efficient four-lobe rotor set
and compact higher-efficiency intercooler to deliver boosted air
into the high-flow cylinder heads.
An engine-oil cooler is identical to the system on the Corvette
ZR1. The integral liquid-to-liquid system is so effective that
vehicles with the manual or automatic transmission are deemed to
be fully track-capable with the standard factory-installed cooling
package.
The MRC system adjusts up to 1,000 times per second.
TIP: ZL1 performance parts have a break-in period. For the first
1,500 miles (2,414 km), avoid full-throttle starts and abrupt stops,
do not exceed 4,000 engine rpm, avoid driving at any one constant
speed, and do not drive above 80 mph (129 km/h). Following
these break-in period guidelines will result in better performance in
the long run.
dual-coil system — with one coil at either end of the damper —
replaces the larger single-core design of the previous generation.
The new dual-coil design enables faster response, with damping
levels now adjusted up to 1,000 times per second – about one
adjustment per inch of vehicle travel at 60 mph – making the
system exceptionally responsive to changing driving and road
conditions.
Transmissions
The standard transmission for the ZL1 is the latest TREMEC
(TR6060) 6-speed manual, which offers 30 percent more torque
capacity than in the Camaro SS. The higher torque capacity
results from a strengthened output shaft, high-strength rear
housing, and additional roller bearing.
For a look at the tuning of the MRC system, click here.
Similarly, the Hydra-Matic 6L90 6-speed automatic has been
strengthened to handle the torque and horsepower produced by
the 6.2L supercharged small block. The 6L90 features a strengthened input gearset with two additional pinion gears, additional
clutch plate, and a strengthened output shaft and gearset.
Electrically Assisted Steering (EAS) is an innovative power-assist
system connection between the ZL1 steering system and the
engine. The assist power is applied directly to the rack with a belt
drive and a ball nut mechanism. This design allows for lower
inertia, lower friction and more direct steering feel, as well as
superior response.
There are three settings for MRC in the ZL1: Tour, Sport, and Track.
Electrically Assisted Steering
The 6L90 transmission features three distinct drive modes
calibrated for optimal fuel economy (Drive), more aggressive
driving (Sport) and true manual control (Manual) with no automatic upshifts.
Performance Track Management
Exclusive to GM and first introduced on the Corvette ZR1,
Performance Track Management (PTM) is a feature that tailors the
performance of the ZL1 to match the driver’s skills and driving
conditions. This advanced system integrates Magnetic Ride
Control, launch control, Traction Control and stability control. Five
PTM performance levels or modes are available through the Driver
Information Center.
Dual-Mode Exhaust
The dual-mode exhaust of the ZL1 provides refined tuning (optimal
noise and vibration characteristics) at low engine speeds and a
low-restriction exhaust (enabling peak horsepower performance)
at high engine speeds in one exhaust system. It utilizes a vacuum
system similar to Corvette, coupled with twin valves located at the
exhaust tailpipes.
To watch the development of the ZL1 launch control system,
click here.
Brembo® Brakes
Although both Corvette and Camaro use vacuum actuated
exhaust valves, there are differences. In the Camaro, the control
software resides in the chassis control module that contains other
software, to reduce the number of modules in the vehicle.
The ZL1 is
equipped with
a large, extremely robust,
Brembo brake
system with
6-piston front
and 4-piston
rear calipers
and ventilated
two-piece front
and one-piece
rear rotors.
The Corvette is calibrated to open the exhaust valves only during
aggressive driving, when engine rpm and throttle position exceed
certain values. The Camaro is also calibrated to be open during
aggressive driving. In addition, it is calibrated to open the valves at
engine idle and up to 1,000 rpm.
High-Performance Fuel System
The fuel pump and tank have been modified to maximize the
amount of fuel available during high performance maneuvers. The
system features additional fuel pickups on the primary side, and
the secondary fuel pickup is moved outboard for continuous fuel
access during high-G cornering under low fuel conditions.
TIP: Due to
the floating
Brembo brake system features 6-piston
design of the
front and 4-piston rear calipers
brake rotor, the
front brake rotor
cannot be refinished. If the front brake rotor is found to be at or
below the minimum specification, it must be replaced.
TIP: Premium fuel is required.
Magnetic Ride Control™
The ZL1 features the third-generation of Magnetic Ride Control
(MRC). MRC employs valveless damping and magneto-rheological
(MR) fluid technology. For the third-generation, MRC uses new
twin-wire/dual-coil dampers at all four corners. The smaller
Click here for details on ZL1 endurance testing of the performance components.
2
January 2012
2012 Camaro ZL1 –
continued from page 2
Wheels and Tires
The ZL1 features a functional hood extractor,
lower splitter and larger lower grille.
The front fascia has a large lower splitter to reduce front lift and
force air through the larger lower grille. The larger openings,
splitter and hood extractor all combine for a significant increase in
cooling capacity for the powertrain.
The tires have a special rim protector that puts
rubber over the outer rim.
The ZL1 offers two 20-inch wheel options. Both designs are
20x10-inch front and 20x11-inch rear sizes.
The ground clearance of ZL1 is similar to a Corvette ZR1. This requires care when lifting, driving on inclines and approaching curbs.
Both wheels have larger tires mounted to them that contain a
special rim protector. The rim protector, built into each tire, puts
rubber over the aluminum of the outer rim for protection when
parking.
Learn more about the aerodynamics of the ZL1 here.
Pre-Delivery Inspection (PDI)
During PDI, remove
the spring spacers
from the front suspension and place
them in the glove box
for the customer. If
the car is to be on a
trailer for any reason,
the spacers need to
be placed back in the
front springs to obtain
ground clearance.
The Goodyear Eagle® F1 Supercar® Generation 2 (G:2) tires have
been developed and optimized specifically for the ZL1 to yield
outstanding handling while maintaining requisite street-tire
performance for wet handling, tread wear, noise, mass and rolling
resistance.
It is not recommended to use the high-performance summer tires
when temperatures drop to approximately 40 degrees F (5 degrees
C) or below. It is recommended these tires be stored indoors at
temperatures above 20 degrees F (-7 degrees C) when not in use.
The ZL1 tires should not be rotated. They are corner specific by
design. These tires are unique in their wear patterns. The outside
shoulder may appear worn as compared to other tires.
TIP: Initially, the
Camaro front spring
spacers will be black.
In April, they will be
made yellow for easier visibility.
Underbody Belly Pan
The ZL1 underbody incorporates a belly pan that helps reduce
front lift. The shape was enhanced to draw air upward into the
underbody area. This highly energized air provides extra cooling for
underbody components affected by the additional exhaust thermal
energy of the high-powered LSA engine.
Before delivery, hand wash the car. Due to the larger width wheels,
most car wash tracks will not accommodate the wider wheels
Lifting Precautions
The underbody belly pan will need to be removed before performing service work, including oil and filter changes.
Due to the low ground clearance, it's necessary to be extra careful
when driving the vehicle onto a ramp (such as an alignment rack)
or when using a hydraulic lift.
Exterior Design
The front view of the ZL1 is highlighted by an aluminum hood with
functional carbon fiber “mohawk” extractors. Carbon fiber provides
strength, durability and low mass. The extractor is available in
either black paint or exposed weave.
Lifts are not all alike. Heights, adjustability, dimensions, and floor
contour can vary, so specific instructions are not possible. Compare the vehicle's dimensions with your lift or alignment rack to
determine what accommodations are needed to lift the vehicle
without damage.
TIP: The black painted carbon fiber “mohawk” requires unique
care when cleaning. Do NOT apply wax or polish to the flat black
portion of the hood or extractors. Applying wax or polish to this
portion of the hood will result in a cloudy haze to the finish. The
optional exposed carbon fiber weave version can be waxed like the
rest of the surface of the car.
January 2012
Front spring spacers must be removed
before delivery, and retained in
the glove box.
To experience how everything on the ZL1 comes together,
click here.
Thanks to Brad Thacher and Jack Pantaleo
3
Noticeable Difference in Audio Volume Level
stations, it may also store the EQ settings. The increased or
decreased bass and treble settings will enhance the level of
noticed change.
On some 2006-2012 LaCrosse (Allure), Lucerne; 2011-2012
Regal; 2010-2012 Camaro; 2005-2012 Corvette; 2006-2012
Impala; 2006-2007 Monte Carlo; 2004-2012 Malibu; 2012 Sonic;
2005-2012 CTS, SRX; 2006-2011 DTS; 2005-2011 STS; and
2005-2009 XLR models, a difference in audio levels may be
noticed when switching between favorites/presets and/or audio
bands. It may be noticed that the condition is happening when
going between AM/FM, CD, and/or XM bands.
In addition, try multiple CDs. This may be normal due to variations
in the CD/MP3 burning process with commercially or consumer
produced discs.
If the condition changes with either the equalizer settings or
multiple CDs, this is normal and no parts should be replaced.
Verify that the equalizer settings are all set to the same levels for
each band when comparing audio differences. When storing the
Thanks to Ernest Haller
Steering Noise in Cold Temperatures
On some 2011-2012 Regals, a rubbing or
squeaking noise may be heard coming
from the base of the steering column
when turning the steering wheel on a
cold morning.
The intermediate shaft dust seal may be
out of position and not seated properly in
the sheet metal on the engine compartment side. This may cause the rearward lip
of the seal to fold into the opening where
the intermediate shaft exits the passenger
compartment.
Seal incorrectly positioned on shaft
The best way to check for this condition is
to lift the inner seal (in the passenger
compartment) to see if the outer seal is
contacting the intermediate shaft. The
noise that the seal makes when contacting
the shaft is louder when it is cold. The seal
can be repaired by tucking it back into
place, or if necessary, drop the cradle and
Seal correctly positioned on shaft
reseat the seal. Correctly positioning the
intermediate shaft dust seal will eliminate
the noise.
Thanks to Christopher Crumb
Intermittent Audio Device Operation
On 2012 and prior GM passenger cars and
light-duty trucks equipped with a USB
port, an MP3 player or iPod® may be inoperative when the vehicle is first started, or
the radio may switch to the USB source
after a few minutes of driving.
If the vehicle is turned off with the USB
device (iPod or equivalent audio device)
still connected, the device will continue to
play until its battery goes dead.
TIP: The device will not charge if left
plugged in when the vehicle is turned off.
When the vehicle is started, the device will
start charging. The device may need to
charge for a few minutes before it will
have enough power to turn on. Once it
turns on, the radio recognizes that a
device is plugged in and automatically
switches to the USB source.
Explain to the customer that this is normal
operation.
Thanks to Ryan Dorland
Trunk Rattle Noise
On a 2011-2012 Regal with a tire inflator kit (RPO WTR), a rattle or
buzz may be noticed at the rear of vehicle.
The source of the noise may be the tire inflator pump hold-down nut,
which may be loose or cross-threaded.
Inspect the hold-down nut for the tire inflator pump in the trunk.
If the nut is loose, make sure it was not cross-threaded when installed. Repair the threads using a tap and die as needed or replace.
Thanks to Chris Crumb
Location of hold-down nut
4
January 2012
Programming Tips for Remote Keys/Transmitters
On vehicles with BTM (Battery Thermal
Module), there are several conditions that
may cause a Remote Keyless Entry transmitter (key fob) not to program.
that are NOT related to a faulty key fob:
• A key fob that is not positioned properly
within the fob programming pocket.
A failure of the immobilizer coil to communicate with the key fob will prevent the programming process from being successful.
• An immobilizer coil that is not mounted in
the correct position. Check to see if the
immobilizer coil is mounted/snapped into
the correct position.
The immobilizer can be communicating with
the BCM, but communication may not be
established with the key fob. There are at
least two possible causes for this condition
For more information, refer to #PI0052B
in the Service Information, which contains
diagnostic tips for programming. These
include keeping at least one door open
during programming, not opening the trunk,
avoiding low frequency interference, and
making sure that additional keys on the key
ring are not preventing the fob from properly seating in the pocket, among others.
Refer to the March 2011 TechLink article
on Remote Transmitter Pocket Locations
for descriptions and photographs of the
locations of the remote transmitter pocket
on several vehicles.
Thanks to Vivian Williams
Too Much of a Good Thing: Using RTV Sealer
instance, too much RTV used to seal a lower crankcase could end
up in the engine oil supply, causing restriction or complete blockage of a critical oil passage.
It's a well-known principle that following Service Information (SI)
procedures is a good way to avoid unintended problems. That
is certainly true when using Room Temperature Vulcanizing
(RTV) Sealer.
Excess RTV that has oozed into a blind threaded hole may cause
damage when the bolt is tightened, or it may interfere with the
proper torque of the bolt threads.
RTV provides an excellent seal when used according to instructions, but problems can arise if too much is used.
Also be careful when removing old RTV before resealing mating
parts. Be sure all the loose pieces of old RTV have been completely removed so they don't fall into unintended places.
SI says to use a bead size as specified in the procedure. It's easy
to see that too little RTV may not provide the intended proper seal.
But if too much RTV is used, the excess may be squeezed from
between the sealing surfaces, where it cures. From there, pieces
of it may loosen and make their way into unintended places. For
Thanks to Dave Peacy
Power Steering System Conversion to Dexron VI
Dexron VI fluid was introduced in the power steering systems
on the Acadia, Enclave and Traverse in production during the
2012 MY.
To prevent a pinion seal squeak in the future, it is recommended
to convert to Dexron VI only when a steering gear is replaced. It is
not recommended to convert to Dexron VI for any other service to
the power steering system because the pinion seal has already
been exposed to the old fluid, which is the cause of the squeak
condition. Converting to Dexron VI without changing the pinion
seal would not prevent a pinion seal squeak in the future.
There may be some questions about the use of Dexron VI fluid in
the power steering system when performing a repair on these
vehicles from a past model year: 2007-2012 Acadia, 2008-2012
Enclave, 2009-2012 Traverse, and 2007-2010 OUTLOOK.
Furthermore, if a squeak should develop from the steering gear
pinion seal, it is imperative to convert the system to Dexron VI
before replacing the pinion housing and inlet hose as outlined in
#PI0029F. The new housing recommended as part of this service
procedure contains a fresh seal that must not be exposed to, or
contaminated by, the old fluid or it may develop a squeak in the future. The new inlet hose also has a larger diameter orifice to allow
for less system back pressure.
Refer to #PI0620 for information on using Dexron VI in the power
steering system. The information includes:
• The procedure for converting the system to Dexron VI
• How to procure an identification tag for the power steering
reservoir to identify that the system has been converted
• Conditions under which this conversion should be performed
Thanks to Gary McAdam
Brake Fluid Level Switch
On a 2003-2007 Saturn ION, the brake warning light may be
illuminated and DTC C0129 (Low Brake Fluid Circuit High) may be
set. This condition generally occurs after the fluid switch or brake
fluid reservoir was replaced.
(normal state) is 2K ohms. If the switch is out of range, replace
the switch.
If the switch is in the normal range, follow published diagnostics in
the appropriate Service Information.
Measure the resistance of the fluid level switch. The value for
the closed position (low fluid) is 2.7 ohms and the open position
January 2012
Thanks to Ernest Haller
5
Oil Feed Restrictor Orifice Information
While performing mechanical engine repairs on some 2009-2011
Aveo; 2011-2012 Cruze; 2012 Sonic; 2009-2010 Wave/G3; and
2008-2009 Astra models equipped with the 1.6L 4-cylinder engine
(RPO LXV) or 1.8L 4-cylinder engine (RPOs LUW, 2H0), a melted
plastic piece may be observed in the engine block deck. If an
engine is severely overheated, the high temperature plastic oil
feed restrictor orifice in the block deck may become damaged. The
orifice is toward the exhaust side of the block, between cylinders 2
and 3. It may be difficult to locate this item in the parts catalog.
Location of oil feed restrictor orifice
Oil flow through block, orifice and cylinder head passages
If it becomes necessary to replace the oil feed restrictor orifice,
search the following terms in the parts catalog:
These searches will pull up the necessary part and the latest
part number.
• Aveo and G3/Wave: Search the term plug
• Astra: Search the term restrictor
Thanks to John Kopec
• Cruze and Sonic: Search the term valve
A/C Condenser Will Not Mate
with Low Side Suction Line
If the low side suction line between the condenser and compressor or the condenser on a
2010-2011 Aveo requires replacement, keep in mind that the first design low side A/C suction
line and condenser have been discontinued. When replacing the parts, the suction line will not
mate with the condenser if different design parts are used.
If the vehicle has
the first design
parts on it, the
second design
parts are
needed. If the
vehicle has the
first design condenser or AC
line, order the
following parts:
• A/C condenser,
P/N 95227758
• A/C low side
suction line,
P/N 96802198
1st Design Condenser
2nd Design Condenser
Airbag
Readiness
Light
A 2012 Sonic may have the
Airbag Readiness, or Supplemental Inflatable Restraint (SIR),
lamp illuminated with DTCs B0012
(Driver's Steering Wheel Air Bag
Deployment Loop Stage 1) and/or
B0013 (Driver's Steering Wheel
Air Bag Deployment Loop Stage
2) set for a deployment loop
circuit condition.
Check for proper connections and
CPA installation at the steering
wheel inflator module and at the
SIR coil assembly connectors
before any repairs are attempted.
If no concerns are found, follow
appropriate diagnostics in the
Service Information.
Thanks to Bryan Brunner
Thanks to Ernest Haller
6
January 2012
Voice Recognition Performance
GM TechLink is published for all
GM retail technicians and service
consultants to provide timely
information to help increase knowledge about GM products and
improve the performance of the
service department.
Publisher:
Diana Sancya
GM Customer Care and Aftersales
/ [email protected]
Editor:
Lisa G. Scott
GM Customer Care and Aftersales
/ [email protected]
On the 2012 Sonic, the HVAC system can
produce additional background noise that may
affect the performance of the in-vehicle microphone for speech recognition, OnStar, and Bluetooth phone calls. The HVAC system does not
automatically decrease in intensity when an
OnStar or Bluetooth call is made. This will create
a louder cabin environment and may affect the
ability of the in-vehicle microphone to receive a
clear signal. In addition, when the center panel
vents (in the center stack above the radio) are
directed upwards, the airflow can directly interfere with the microphone.
If customers are experiencing issues with speech
recognition or with their voice quality on phone
calls, instruct them to redirect the center panel
vents downward or change the airflow setting
away from Vent or Bi-Level to reduce the background noise.
Thanks to Bryan Brunner
Reduce background noise by
moving the center panel
vents downward or changing the
airflow setting away
from the Vent or Bi-Level position.
Technical Editor:
Mark Spencer
/ [email protected]
Stop and Turn Lamp
Options/Diagnostic Information
Production Manager:
Marie Meredith
Desktop Publishing:
5by5 Design LLC
/ [email protected]
FAX number:
3
1-248-729-4704
Write to:
1. Without RPO V4D – The stop and turn signals are one lamp (same bulb). Traditionally,
there will be one red stop/turn signal lamp per side. There are circuits for the left stop/turn
signal and the right stop/turn signal.
*
TechLink
PO Box 500
Troy, MI 48007-0500
GM TechLink on the Web:
:
GM GlobalConnect
General Motors service tips are intended
for use by professional technicians, not a
“do-it-yourselfer.” They are written to
inform those technicians of conditions that
may occur on some vehicles, or to provide
information that could assist in the proper
service of a vehicle. Properly trained
technicians have the equipment, tools,
safety instructions and know-how to do a
job properly and safely. If a condition is
described, do not assume that the
information applies to your vehicle or that
your vehicle will have that condition. See a
General Motors dealer servicing your
brand of General Motors vehicle for
information on whether your vehicle may
benefit from the information.
Inclusion in this publication is not
necessarily an endorsement of the
individual or the company.
Copyright© 2012 General Motors
All rights reserved.
January 2012
On 2009-2012 Express and Savana Cutaway Vans, there may be some confusion regarding the proper operation of the stop and/or turn signals. This could lead to difficultly
diagnosing a stop and/or turn signal condition. There are two different ways the Body
Control Module (BCM) can be calibrated for stop and turn signal operation:
2. With RPO V4D – The stop and turn signals are separate lamps (two different bulbs).
Traditionally, there will be one red stop lamp and one amber turn signal lamp per side.
There are circuits for the left turn signal only, right turn signal only, and the stop lamps only.
RPO V4D is included with the Ambulance Package (RPO YF2), School Bus Package
(RPO B3D) or Shuttle Bus Package (RPO ANC).
If the vehicle is upfitted and the body does not support the way the BCM is calibrated for
the stop/turn signal setup, contact the Techline Customer Support Center for a new
BCM calibration to either remove or add the RPO V4D option.
Thanks to Jim Will
Installing GM Accessory
Illuminated Sill Plates
During the installation of the GM Accessory illuminated sill plates on the 2011-2012
Cruze, the hole drilled in the trim panel needs to be elongated to relieve stress on
the wiring harness.
The current hole location puts too much stress on the electrical connector joint on the sill
plate. Elongate the hole on the harness side of the sill plate slightly to relieve the stress
on the harness.
Thanks to Chris Hightower
7
Car Issues – Fix It Right the First Time
Model
Year(s)
Vehicle Line(s)/Condition
Do This
Don’t Do This
Reference
Information/Bulletin
2006-2012
All Vehicles — COAX repair kit availability
Utilize the coax repair kit to
reduce vehicle down time
Order complete wiring
harnesses for OnStar,
XM, and navigation
antenna coax concerns
PI0572
2004-2011
Aura, G6, Malibu, Malibu Maxx — Intermittent
brake lights (stop lamps), cruise control
inoperative
Inspect for terminal fretting
corrosion in the BCM, C2 or X2
connector
Replace BCM
08-05-22-009C
2008-2009
G8 — Grind noise from front of vehicle when
turning steering wheel
Replace mount and bearing
together
Replace mount and
bearing separately
PI0140
2004-2011
CTS, SRX, STS — Engine oil consumption on
high feature V6 engines - air cleaner housing
test, repair procedure
Must test air filtration box
Perform bulletin without
testing for debris source,
air inlets, air filtration
housing for leakage
11-06-01-004
2011-2012
Equinox, LaCrosse, Lucerne, Regal, Terrain —
Steering wheel airbag module may not fit
properly
From under the air bag module,
check and correct the wire
harness routing
Replace the steering
wheel or air bag module
PI0576
2011-2012
Cruze, Sonic — DTC P0300 misfire diagnosis
Check for these conditions prior
to replacement of parts
Change parts without
checking for these
conditions
PI0578
2012
LaCrosse, Regal — MIL On, DTCs P1B37, P1B38
and P1B39 set
Move the 2-way radio antenna to
a trunk mounted location
Replace BECM
PI0577
2005-2012
All Vehicles — Warranty code generated by
El-50313 Midtronics GR8 battery tester/charger
required for claim processing on labor operation
N0110 and battery part restriction
Install revised software to correct
"Loss Of Communication" issue
with GR8. Availability information
provided in bulletin
Failure to upgrade the
software can cause
unnecessary test restarts
03-06-03-004E
2011
Cruze — PPS May not recognize occupants in
certain seating positions
Replace the passenger seat mat
with front airbag passenger
presence kit
Replace seat assembly or
SDM
PI0583
2004-2005
Allure, LaCrosse, Impala, Grand Prix — Blower
motor inoperative, blower speed may drop or
blower continues to run after key Off
Install a capacitor at the blower
motor control module connector
Replace the blower
motor control module
blower motor or the hvac
control head
05-01-39-001A
2009-2010
HHR — SIR light On, DTC B0019 or B0020 set
Use new seal connector
Use old seal connector
PI0117A
2009-2012
CTS-V, CTS-V Coupe, CTS-V Sport Wagon —
Scratches on console, center stack, door panels
and steering wheel trim panels
Use the new cleaner wax
specified to polish out minor
scratches or scuffs
Replace trim for minor
scratches or scuffs that
can be polished out
08-08-49-018C
2011-2012
Caprice PPV — No power to front passenger
foot well (upfitter) auxiliary 12 volt battery
power supply
Attach blue connector and
auxiliary battery
Hook up aftermarket at
UHBEC
PI0587
2012 and
prior
All Vehicles — Reporting missing or inaccurate
navigation radio map disc information
Report all navigation map
database concerns to the GM
Navigation Disc Center
2011-2012
Cruze — Side door inside handle does not sit
flush
Replace all side door inside
handle stop bumpers with the
new part number 95176208
Replace door handle
assembly
PI0560
2012
Malibu — Noise from rear suspension over
bumps
Confirm affected side rear
suspension noise at low speeds
originates and replace rear
trailing arm
Replace shocks or control
arms
PIC5578
8
10-08-44-006A
January 2012
Truck Issues – Fix It Right the First Time
Model
Year(s)
Vehicle Line(s)/Condition
2010-2011
Equinox, Terrain — Engine no crank/no start
due to discharged battery/parasitic current draw
If a 70ma battery draw is
found, install the new HVAC
system new service
calibration
Replace the HVAC control
module
PI0575
2011-2012
Acadia, Enclave, Traverse — Creak noise from
driver’s seat track front mounting area
Place anti-squeak tape on seat
frame
Replace the seat track
PI0521A
2010-2011
Avalanche, Sierra, Silverado, Suburban, Tahoe,
Yukon, Yukon Denali, Yukon XL, Yukon XL
Denali — Excessive cabin moisture/reduced
window clearing, non responsive HVAC control
Reprogram HVAC control
module
Replace actuators or HVAC
module
11-01-38-001B
2010-2012
Acadia, Enclave, Outlook, Traverse — Whine
noise heard when using OnStar or Bluetooth
Utilize the filter to reduce
induced whine when using
the vehicle microphone in a
Bluetooth or OnStar call
Replace the radio or VCIM
10-08-44-005B
2008-2010
Avalanche, Denali, Denali XL, Escalade,
Escalade ESV, Escalade EXT, H2, SAAB 9-7X,
Savana, Sierra, Silverado, Suburban, Tahoe,
Yukon, Yukon Denali, Yukon XL, Yukon XL
Denali — MIL illuminated, reduced engine
power message displayed, DTC P2135 set
For DTC P2135, replace the
throttle body cover
Replace the entire assembly
11-06-04-007
2006-2008
Corvette, Escalade, Escalade ESV, Escalade EXT,
G8, H2, Sierra, Silverado, STS, Suburban, XLR,
XLR-V, Yukon, Yukon Denali, Yukon XL, Yukon
XL Denali — Slips in Reverse, delayed Reverse
engagement, DTC P0776, harsh 2-3 shifts
Inspect the 1-2-3-4/3-5-R
housing for a cracked weld
Replace the transmission
without inspecting the 1-2-34/3-5-R housing for a
cracked weld
PI0536A
2011
SRX — A/C system delivers warm air
Replace the receiver/dryer
assembly
Replace the complete
condenser assembly
PI0588
1996-2012
Express, Savana — Side cargo door is hard to
open
Install grease-able hinge pins
Replace pins with OEM pins
06-08-64-032B
2010-2012
Camaro, Cruze, Equinox, LaCrosse, Orlando
(Canada), Regal, Sonic, Terrain, Volt — CD/DVD
will not eject from instrument panel-mounted
player
Ensure the CD/DVD eject path
is free of obstructions
Replace the radio
PI0124B
2011
Sierra, Silverado — Drive belt chirp noise from
engine compartment
Check and or replace P/S
pulley
Dress or replace belt
without checking pulley hub
depth
PI0594
10212.01D Emerging Issues
Service
Know-How
Do This
Don’t Do This
Reference
Information/Bulletin
January 12, 2012
To view Emerging Issues seminars:
Log in to www.gmtraining.com, select Service Know-How/
TECHAssist from the menu, select Emerging Issues, and then
Searchable Streaming Video to choose the current Emerging
Issues seminar or past programs.
Customer Care and Aftersales
January 2012
9