Corvette C6 Technical Service Bulletins
2009 Excessive Oil Consumption
GM SERVICE AND PARTS OPERATIONS
DCS 2223
URGENT DISTRIBUTE IMMEDIATELY
Date: March 10, 2009
Subject: 09043 Service Update Bulletin
For Inventory Vehicles Only
Excessive Oil Consumption – Incorrect Piston Ring –
Expires September 30, 2009
Models: 2009 Chevrolet Corvette
To: Chevrolet Dealers
Attention: General Manager, New Vehicle Sales Manager,
Service Manager, Parts Manager and Warranty Administrator
General Motors is announcing Service Update Bulletin 09043 today. The total number of vehicles involved is 53.
This bulletin provides a service procedure to replace the engine on certain 2009 model year Corvette vehicles equipped with a 6.2 L V8 engine. Some of these vehicles may have one or more incorrect oil control rings installed in the engine. This could result in high oil consumption.
This service procedure should be completed on involved vehicles currently in dealership inventory as soon as possible but no later than September 30, 2009, at which time this bulletin will expire.
A vehicle VIN list sorted by BAC has been attached for your reference. If your BAC is not included on this list, you do not have any involved vehicles.
Service Information System (SI)
Bulletin 09043 will be available in SI on March 10, 2009.
GM Vehicle Inquiry System (GMVIS)
GMVIS information will be available on March 10, 2009.
Service Update Bulletin Information (SUB) Link
The Inventory VIN List will be available in the SUB link on March 11, 2009.
VIN Listing:
BAC VIN
111159 1G1YY25W295108097
111193 1G1YY26W895108281
111828 1G1YY26W395108172
112119 1G1YY26W395108396
112479 1G1YY25W595108157
112802 1G1YY25W895108234
112802 1G1YY25W995108419
112918 1G1YY36W395108176
112990 1G1YY26W195108476
113352 1G1YY25WX95108364
113645 1G1YY26W595111204
113710 1G1YY25W495111065
113801 1G1YY25W595111348
113867 1G1YY25WX95108140
113867 1G1YY26WX95108038
113914 1G1YY36W795108584
113974 1G1YY26W195108123
114196 1G1YY26W995111240
114428 1G1YY25W295108150
114549 1G1YY25W795108063
114659 1G1YY26W395111525
114745 1G1YY36W295111215
114770 1G1YY26W995108239
114859 1G1YY26W695111423
115090 1G1YY25WX95108168
115181 1G1YY26W295109197
115461 1G1YY26W195108137
116531 1G1YY25W495108182
132366 1G1YY25W395111414
158540 1G1YY25W395111218
158545 1G1YY26W095111532
159778 1G1YY26W195108378
162341 1G1YY25W795111531
163036 1G1YY36W495111426
163417 1G1YY25W795109147
164353 1G1YY25W295111260
164353 1G1YY26W895109186
166366 1G1YY26W195111216
168833 1G1YY36W595111418
173929 1G1YY25W495111020
185708 1G1YY26WX95111103
188691 1G1YY26WX95108220
192551 1G1YY25W195111511
194522 1G1YY36W195108421
206881 1G1YY36WX95108336
208631 1G1YY25W695108118
215125 1G1YY25WX95108297
216636 1G1YY36W195109150
221407 1G1YY26W995103865
230102 1G1YY25WX95108414
234369 1G1YY26W895111116
Tapping or Scraping Noise From Rear Wheel Area (Replace Wheel Drive Shaft Nut) #07-04-95-001 - (09/26/2007)
Models: 2004-2008 Chevrolet Corvette and 2004-2008 Cadillac XLR
-------------------------------------------------------------------------------
Condition
Some customers may comment on a tapping or a scraping noise coming from the rear wheel area.
Cause
This condition may be due to the torque on the wheel drive shaft nut relaxing over time.
Correction
Replace the left and the right wheel drive shaft nut following the procedure below.
Remove the center cap from the rim.
Remove and discard the wheel drive shaft nut.
Apply LOCTITE™ 272, or equivalent, to the threads of the axle shaft.
Install the nut and tighten to the new specification.
Tighten
Tighten the nut to 215 N·m (160 lb ft).
Install the center cap to the rim.
Important: The vehicle should not be driven for 24 hours following the repair in order to allow the thread lock to cure.
Parts Information
Part Number.....10257766
Description......Nut
Qty................2 (one per side)
Warranty Information: Labor op F9712 0.3 hr.
Roof Delamination Issue
Painted Roof Adhesive Separation - Updated Bulletin
--------------------------------------------------------------------------------
Subject: 05112D - Customer Satisfaction Program
Painted Roof Adhesive Separation
Vehicle Population and Service Procedure Revised
Message #: WIR20060318
SERVICE AND PARTS OPERATIONS
DCS1613
URGENT - DISTRIBUTE IMMEDIATELY
Date: June 23, 2006
Subject: 05112D – Customer Satisfaction Program
Painted Roof Adhesive Separation
Vehicle Population and Service Procedure Revised
Models: 2005-2006 Chevrolet Corvette with Painted Roof
To: All Chevrolet Dealers
Attention: Service Manager, Parts Manager
and Warranty Administrator
Customer Satisfaction Program Bulletin 05112C was released on June 7, 2006 via GM Administrative Message WIR20060307.
This bulletin is being revised to include Z06 model vehicles. A new service procedure and labor time have also been added.
A copy of revised bulletin 05112D is attached below. Please review the new information immediately and discard all copies of bulletin 05112C.
The Service Information System (SI) version of this bulletin will be available on June 24, 2006.
GMVIS information for the additional vehicles will be available on June 24, 2006.
Rear Axle Chatter
Rear Axle Chatter Shudder on Turns - keywords differential fluid noise oil #PIP3559 - (Sep 22, 2005)
Rear Axle Chatter Shudder on Turns
1999-2006 Chevrolet Corvette
2004-2006 Cadillac XLR
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Rear axle chatter or shudder on turns on Chevrolet Corvette and Cadillac XLR.
Recommendation/Instructions:
If this is the first complaint for this condition flush and fill the rear axle with P/N 89021669 (in Canada 89021670) gear lube and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).
If this is a repeat complaint or the condition persists after the flush and fill, replace the right and left rear axle clutch packs following published service procedures.
After clutch pack replacement use 1.6 l (1.69 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455). and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).
Note: 2006 Z06 equipped vehicles require 2.55 l (2.70 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 190 ml (6.4 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).
Note: Export vehicles use 2.01 l (2.12 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 150 ml (5.1 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).
Once the axle fluid has been changed the car must be driven in 8 - 10 SLOW figure eights to work the fluid between the clutch plates.
Blocked First Gear
Intermittent Block Out of First Gear from a Stop - keywords hard no shift shifter stop #PIP3513 - (Aug 5, 2005)
Intermittent Block Out of First Gear from a Stop
2005 Cadillac CTS-V
2005 Chevrolet Corvette and SSR
2005 Pontiac GTO
Equipped with Manual 6 Speed (RPO - MM6, M10, M12 or MZ6) Transmission
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Intermittent block out of first gear at a stop. Driver may have the vehicle in neutral while stopped in traffic and when depressing the clutch pedal to engage first gear, the shift is blocked.
Recommendation/Instructions:
If this condition occurs less than 5 percent of the time, it would be considered normal. This condition occurring more than 5 percent of the time should be repaired. A clutching tooth improvement has been made to the first speed gear. Replace the first speed gear in the transmission. Check the gap between the vertical faces of the blocking ring teeth and the speed gear as per Document ID # 588712.
Transmission
Application
Part Number
MM6
Corvette
12455013
MZ6, M12
Corvette
88894089
M12
CTS-V
88894089
M12
GTO
88894089
M10
SSR
89059976
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Corvette C6 Transmission Mis-Machined Transmission Countershaft Snap
Ring Groove
Service Bulletin 04-07-29-003
Mis-Machined Transmission Countershaft Snap
Ring Groove (Inspect/Replace the Transmission)
DATE: October 21, 2004
SUBJECT: Service Bulletin 04-07-29-003
Mis-Machined Transmission Countershaft Snap
Ring Groove (Inspect/Replace the Transmission)
MODELS: 2005 Chevrolet Corvette
2005 Cadillac CTS-V
with 6-speed manual transmission
Corvette Transmission, Manual 6-SPD, Tremec
(RPO MM6 or MZ6)
CTS-V Transmission, Manual 6-SPD, Tremec
(RPO M12)
and included in the attached VIN list
TO: All Cadillac and Chevrolet Dealers
ATTENTION: Dealer, General Manager, Sales Manager,
Service Manager, Parts Manager and
Warranty Administrator
IMMEDIATE ACTION REQUIRED
Advanced Service Bulletin 04-07-29-003 is being released today and advises dealers to inspect for the mismachined transmission countershaft snap ring groove. Dealers will perform a transmission snap clutch maneuver and if necessary, replace the transmission.
In addition to using this procedure to repair vehicles with this complaint, we are requesting that this repair be performed on all vehicles currently in your inventory that are included in this Administrative Message VIN list. Completion of this procedure prior to vehicle sale or delivery will help ensure customer satisfaction and reduce the possibility of future complaints.
We are also requesting you contact the DBC to report owner information for any recently delivered vehicles.
Please see the attached VIN list and bulletin for detailed instructions. The list of involved vehicles is also included in the attached bulletin.
ADVANCED SERVICE INFORMATION
Subject: Mismachined Transmission Countershaft Snap Ring Groove
(Inspect/Replace Transmission)
Models: 2005 Chevrolet Corvette with Manual 6–Speed Tremec Transmission
(RPOs MM6, MZ6)
2005 Cadillac CTS-V with Manual 6–Speed Tremec Transmission (RPO M12)
Attention: This correction should be performed on all vehicles currently in your inventory that are included in the Administrative Message (U.S.) or Dealer Communication
(Canada) VIN list prior to sale or delivery. In Canada, the Dealer Communication and VIN list is distributed to affected dealers only.
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 04-07-29-003
Date: October, 2004 Service Bulletin
Copyright 2004 General Motors Corporation. All Rights Reserved.
Condition
Some of the 6-speed transmissions in the subject
vehicles may have been assembled with an extension
countershaft snap ring grove dimension that was
machined out of specification. This condition may result
in fore and aft / back and forth movement of the shift
lever when in 5th gear, then 5th or 6th gear clash
noise, and eventual premature wear of the 5th and/or
6th gear synchronizer.
Correction
Dealers will inspect for this condition by performing a
transmission snap clutch maneuver and, if necessary,
replace the transmission.
Page 4 Bulletin No.: 04-07-29-003 October, 2004
Transmission Snap Clutch 5th Gear Test Procedure
1. Raise and support the vehicle so that the rear
wheels are safely off the ground. Refer to Lifting
and Jacking the Vehicle in General Information:
• Corvette – SI Document ID #104056.
• CTS-V – SI Document ID #813128
2. Start the vehicle.
Important: Ensure that the transmission is not in
Reverse and that the wheel speed is zero.
3. Depress the clutch pedal to the floor.
4. Shift the transmission into 5th gear and remove
your hand from the shift knob.
5. Increase the engine speed to 2,000 RPM.
Important:
• The shift lever should have NO fore-aft / back and
forth motion when the clutch is released.
• On a very small number of vehicles, the shift lever
may move slightly rearward only once. This is a
normal characteristic.
• The shift lever WILL have some lateral / side to
side motion which will occur due to torque roll of
the powertrain.
• If the shift lever moves, it will be toward 6th gear
(rearward) and the magnitude could be
4 mm – 8 mm (0.16 in – 0.31 in) at the shift lever
knob and will repeat each time the clutch is
snapped.
6. Quickly release the clutch pedal and watch to see
if the shift lever has any fore-aft movement.
• If the shift lever DOES NOT move fore-aft, or
moves very slightly, about 2 mm (0.079 in),
repeat the test sequence Steps 3 to 6 for a total
of 10 times to ensure there is no shifter lever
movement. If the shift lever does not move other
than once very slightly after 10 cycles of test
sequence, the transmission is OK. No additional
repair is necessary and the inspection labor
operation may be claimed.
• If the shift lever DOES move fore-aft, repeat
the test sequence Steps 3 to 6 to confirm the
shifter lever movement. If the shifter lever does
move fore-aft, continue with the next step.
Important: The following test is for comparison purpose
only. The 3rd gear amount of fore-aft movement is
allowable.
7. Perform a comparison test with the shifter in 3rd
gear. Compare the amount of fore-aft movement
with the shifter in 3rd gear and 5th gear while
performing test sequence Steps 3 to 6.
• If the amount of fore-aft shifter lever movement
is the same in 3rd gear as 5th, or if only slight
movement occurs once in 5th gear, no
additional repair is necessary and the inspection
labor operation may be claimed.
• If the amount of fore-aft shifter lever movement
is greater in 5th gear than in 3rd gear, continue
with the next step.
8. Replace the transmission. Refer to Transmission
Replacement:
• Corvette — Document ID #1399623
• CTS-V — Document ID #1523514
Dealer Action For Sold Units On VIN List
It is possible that some vehicles on the VIN list may
have been sold.
For sold units in the U.S., the dealer is to call the
Dealer Business Center (DBC) and provide them with the customers’
information. In Canada, the dealer is to send the
customers’ information by fax to the GM of Canada
Warranty Department
Parts Information
Dealers are to contact the Product Quality Center (PQC)
to confirm diagnosis and to obtain
approval for part replacement.
Due to parts availability, the PQC will handle all orders.
Warranty Information
The labor time guide has been changed to reflect the
times in this bulletin.
Labor
Operation Description Labor Time
K9701 Transmission Inspection
Procedure 0.4 hr
K2720
Transmission/Transaxle
Assembly - Replace
Corvette
4.5 hrs
K2720
Transmission/Transaxle
Assembly - Replace
CTS-V
2.0 hrs
Bulletin No.: 04-07-29-003 Page 5 October, 2004
GM bulletins are intended for use by professional technicians, NOT a ″do-it-yourselfer″. They are written to inform these
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 bulletin applies to your vehicle, or that your vehicle will have that
condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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