ProblemModelBulletinsafety
recall to repair the steering gear1996-98 Cavalier, Sunfire,
Lumina/Venture, Grand Prix and Silhouette and Transport vansstalling,
security lamp illumination and DTC P1626, P1629, B2955, B2960, B3022,
B3023, B3024 or B30252000-03 Pontiac Grand Prix02-08-56-002ABS
activation at low speed1999-2000 Escalade; 1995-99
Silverado/Sierra (old style); 1995-2000 Suburban/Yukon/Tahoe (old style);
1995-2003 Astro/Safari Van and Sonoma; 1995-2003 Blazer, S10; 1995-2001
Envoy, Jimmy; 1995-2001 Bravada02-05-006Adash-mounted
fifth gear lock-out switch is now available2001-02 Silverado/Sierra with
6.6L diesel or 8.1L gas engine and Allison automatic transmission02-07-30-051Engine
knocking that sounds like a collapsed lifter2001-03 Corvette, Camaro/Firebird,
C/K Trucks with V8 engine02-06-01-038Power
window motors are now available as a separate part 1999-2003 Olds Alero, Pontiac
Grand Am02-08-64-023Inoperative
power door locks or windows2001-03 Chevrolet Tracker03-08-64-002PCM
operates the starter until the engine has started or until the no-start
time limit is reached2003 Chevrolet Silverado,
Suburban, Tahoe, GMC Sierra, Yukon with 5.3L engine03-06-03-001SES
illumination, poor performance and reduced top speed2001-02 Chevrolet Impala
Police/Taxi with 3.8L engine03-06-05-002MIL illumination with DTC P0101 indicates a problem with the Mass Air Flow
(MAF) sensor2000 Cadillac with 4.6L engine 01-06-04-002AIntermittent Traction Off lamp illumination with DTC C0287 may be caused by electrical
interference2000-02 Suburban, Tahoe, Yukon and Escalade 2WD Trucks with Traction Control 03-05-25-0021996-98
Cavalier, Sunfire, Lumina/Venture, Grand Prix and Silhouette and Transport vans
A safety recall has been announced for these vehicles to repair the steering
gear. The bulletin states the lower pinion bearing ‘may separate’ and cause
intermittent loss of power assist when turning left and/or unintended power
assist to the right. About 1.5 million vehicles sold in the United States and
Canada are involved in the recall, and GM will begin issuing letters to owners
this month. Depending on the extent of the damage, GM will replace the bearing
or the whole steering rack at no cost, but at this writing there is no mention
of reimbursing owners for repairs already done.back2000-03 Pontiac Grand Prix
Stalling, security lamp illumination and DTC P1626, P1629, B2955, B2960, B3022,
B3023, B3024 or B3025 indicates a problem with the Theft Deterrent Control
Module. The PASS-KEY fuse may also be blown, but the car may still start and run
after several attempts. The problem is caused by a chaffed wiring harness in the
steering column, which could prevent detection of the fuel enable signal and
permanently damage the theft deterrent control module. The bulletin specifies
replacing the control module, P/N 10335045, and includes instructions for
rerouting the wiring in the steering column.
Bulletin 02-08-56-002back1999-2000
Escalade; 1995-99 Silverado/Sierra (old style); 1995-2000 Suburban/Yukon/Tahoe
(old style); 1995-2003 Astro/Safari Van and Sonoma; 1995-2003 Blazer, S10;
1995-2001 Envoy, Jimmy; 1995-2001 Bravada
ABS activation at low speed may be caused by an increased air gap at the wheel
speed sensor. There will be no trouble codes. Rust and debris can build up on
the wheel speed sensor mounting surface, causing the air gap to increase and
confusing the ABS control unit. The bulletin includes test and repair
procedures, but basically if the sensor does not generate at least 350 mV AC,
either the air gap is too large or the sensor is faulty. This bulletin has been
reissued to include additional vehicles.
Bulletin 02-05-006Aback2001-02 Silverado/Sierra with 6.6L diesel or 8.1L gas engine and Allison
automatic transmission
A dash-mounted fifth
gear lock-out switch is now available to prevent transmission ‘hunting’ when
towing or hauling a heavy load. The bulletin includes part numbers and
installation instructions. Diesel owners should be advised of the increased
engine noise they will hear when staying in fourth gear.
Bulletin 02-07-30-051back2001-03
Corvette, Camaro/Firebird, C/K Trucks with V8 engine
Engine knocking that sounds like a collapsed lifter may be caused by a cut
O-ring in the oil pump. The noise will be noticed when the car (or engine) is
brand new and may be heard when the engine is cold, seem to diminish, then
return as the engine warms up. The O-ring seal between the oil pump and the
pick-up screen may be cut, causing aeration of the oil. The bulletin lists part
numbers but no repair instructions.
Bulletin 02-06-01-038back1999-2003
Olds Alero, Pontiac Grand Am
Power window motors are now available as a separate part and can be installed
without removing the regulator assembly. The bulletin includes part numbers for
each door.
Bulletin 02-08-64-023back2001-03 Chevrolet Tracker
Inoperative power door locks or windows may be due to wiring damage. The wiring
harness can be pinched or chaffed by the door check link. The bulletin refers to
SI Document 162420 for wiring repair and routing instructions.
Bulletin
03-08-64-002back2003 Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, Yukon with 5.3L engine
The starter on these vehicles is controlled by the PCM. With the key in the
‘Start’ position, the PCM operates the starter until the engine has started
or until the no-start time limit is reached. This is done because vehicles
equipped to run on E85 fuel usually require more time to start after an
overnight cold soak, and some owners may release the key before the engine
starts. The resulting ‘ghost crank’ is normal.
Bulletin
03-06-03-001back2001-02 Chevrolet Impala Police/Taxi with 3.8L
engine
SES illumination, poor performance and reduced top speed may be caused by a
restriction in the catalytic converter. The bulletin instructs replacing the
converter and installing a revised brake booster hose with a thermal protection
sleeve. The bulletin includes illustrations, instructions and part numbers.
Bulletin 03-06-05-002back2000 Cadillac with 4.6L engine
MIL illumination with DTC P0101 indicates a problem with the Mass Air Flow (MAF) sensor. If the code sets repeatedly even though the MAF sensor is good and there are no driveability concerns, the PCM should be reprogrammed. The bulletin includes programming instructions using the Tech 2 scan tool and a warning that improper programming can cause the PCM to lock up and not accept the program.
Bulletin 01-06-04-002Aback2000-02 Suburban, Tahoe, Yukon and Escalade 2WD Trucks with Traction Control
Intermittent Traction Off lamp illumination with DTC C0287 may be caused by electrical interference. The problem is more likely with the windshield wipers turned on. A relay can be installed to isolate the appropriate circuits. The bulletin includes detailed installation instructions and all necessary part numbers.
Bulletin 03-05-25-002 
