Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN - AUTOMATIC TRANSMISSION
30603060A10009370The engine does not stall when performing a p1870 diagnostic test with the tech 2 scan tool or when commanding the torque converter clutch enable solenoid on applications that do not have the p1870 diagnostic test listed. 4l60e or 4l65e tr09/27/2004
POWER TRAIN - AUTOMATIC TRANSMISSION - LEVER AND LINKAGE - COLUMN SHIFT
020730024A08/01/2005020730024B634999Diagnosis of cracked or broken transmission case. *tt 2006 and prior cars and light duty trucks. *tt10/11/2002

Consumer Complaints


Fail datemilesoccurencesPurchase date
POWER TRAIN
01/01/1999111/01/1995
 Odometer instrument cluster resisters operate at such high tempertures because of a lack of ventilation that the solder joints melt causing the odometer to fail .i feel if these resisters could fall out into the instrument cluster it could cause an electricial fire..
12/22/1999
 Alternator suddently stopped working. dash board light doesn't allow consumer to see the speed. he doesn't know how fast he is going. also, when applying brake and gas pedals headlights go dim. when he releases gas and brake pedals, headlights are full force. *ak
12/26/1996112/01/1996
 The speedometer fluctuates or is nonfunctional.
12/26/1996112/01/1996
 The trip odometer failed.
POWER TRAIN - AUTOMATIC TRANSMISSION
01/24/1996110/25/1995
 Transmission failed.
POWER TRAIN - AUTOMATIC TRANSMISSION - COOLING UNIT AND LINES
05/02/19962
 Oil cooler lines routed so they rub against metal, causing holes/leak.
POWER TRAIN - AXLE ASSEMBLY - AXLE SHAFT
08/23/1996
 General motors improperly installed differential cover gaskets that do not have lubricating holes, which could cause the outer axle bearings/axle shaft to be damaged around 70000 miles. the damaged bearings could potentially wear grooves in the axle shafts. if not fixed, the metal bits from damaged outer bearings could also damage the inner bearings/pinion bearings, as well as causing the spider gears ti wear into the differential, causing rear end failure which could result in an accident. *ak
01/06/1999108/01/1996
 Starting in the 1990 model year, gm has been improperly installing diffrential cover gaskets that do not have the lubricating holes!!! if you do not change this gasket to one that has the proper holes, your outer axle bearings, as well as the axles themselves, will be destroyed ty around 70k miles. the damaged (under lubricated) bearings will wear grooves in the axle shafts, requiring that they also be replaced. if this is left unchecked, the metal bits from the damaged outer bearings and axles will also damage the inner bearings, pinion bearings, as well as cause the spider gears to wear into the differential carrier. gm has been made aware of this problem, but currently has done nothing about it, and even the new vehicles still come with the improper gaskets. factory replacement gaskets also lack the lubricating holes. gm does not acknowledge that the rear axle gasket has a problem. as a side note, gm full-size light-duty pickups also suffer from this problem. i feel this problem should be corrected at no expense to the owners. i would assume that should you be traveling at a highway speeds and the rear end/axle goes, someone or something is going to get hurt not to mention the high expense of correcting the problem if you have to have the rear end replaced.
POWER TRAIN - DRIVELINE - DIFFERENTIAL UNIT
08/01/1996
 Starting in the 1990 model year, gm has been improperly installing differential cover gaskets that do not have the lubricating holes!! if you do not change this gasket to one that has the proper holes, your outer axle bearings, as well as the axles themselves, will be destroyed by around 70k miles. the damaged (under lubricated) bearings will wear grooves in the axle shafts, requiring that they also be replaced. if this is left unchecked, the metal bits from the damaged outer bearings and axles will also damage the inner bearings, pinion bearings, as well as cause the spider gears to wear into the differential carrier. gm has been made aware of this problem, but currently has done nothing about it. even the new vehicles still come with the improper gaskets. factory replacement gaskets also lack the lubricating holes. gm does not acknowledge that the rear axle gasket has a problem. as a side note, gm full-size light-duty pickups also suffer from this proglem. i feel this problem should be corrected at no expense to the owners. i would assume that should you be traveling at highway speeds and the rear end/axle goes, someone/thing is going to get hurt, not to mention the high expense of the repairs to the vehicle. *ak
01/06/1999108/01/1996
 Starting in the 1990 model year, gm has been improperly installing diffrential cover gaskets that do not have the lubricating holes!!! if you do not change this gasket to one that has the proper holes, your outer axle bearings, as well as the axles themselves, will be destroyed ty around 70k miles. the damaged (under lubricated) bearings will wear grooves in the axle shafts, requiring that they also be replaced. if this is left unchecked, the metal bits from the damaged outer bearings and axles will also damage the inner bearings, pinion bearings, as well as cause the spider gears to wear into the differential carrier. gm has been made aware of this problem, but currently has done nothing about it, and even the new vehicles still come with the improper gaskets. factory replacement gaskets also lack the lubricating holes. gm does not acknowledge that the rear axle gasket has a problem. as a side note, gm full-size light-duty pickups also suffer from this problem. i feel this problem should be corrected at no expense to the owners. i would assume that should you be traveling at a highway speeds and the rear end/axle goes, someone or something is going to get hurt not to mention the high expense of correcting the problem if you have to have the rear end replaced.
08/23/1996
 General motors have been improperly installing differential cover gaskets that do not have lubricating holes. *ak
12/31/1996110/28/1995
 Transmission differential noise.
 Grinding gear sound in rear end-causing auto to pull and jerk. *ak