2001 Chevrolet Sierra TSBs

SUBJECT PERTAINING TO DETONATION, HESITATION, OR SAG ON VEHICLES EQUIPPED WITH THE SIX LITER V-8 ENGINE.

SOME CUSTOMERS HAVE COMMENTED THAT WHEN IN FOUR-WHEEL DRIVE AND IN REVERSE GEAR ENGINE SPEED WILL NOT GO OVER 1,000 TO 1,300 RPMS.

THIS SERVICE MESSAGE IS IN REGARDS TO EXCESSIVE VIBRATION / SURGING OF THE 6600 DURAMAX ENGINE.

SOME VEHICLES MAY EXHIBIT HEAVY BLACK SMOKE AND LOSS OF TURBO BOOST POWER.

GENERAL MOTORS: INFORMATION PROVIDED BY BULLETIN FOR ALL 2012 AND PRIOR GENERAL MOTOR TRUCKS AND PASSENGER VEHICLES...

MISFIRE AT IDLE COLD AND POSSIBLE P0171 AND OR P0174.

EXHAUST VIBRATION RESONANCE OR MOAN 99-05 FULL SIZE TRUCKS AND UTILITY VEHICLES WITH GEN 3 V-8 ENGINES.

SUBJECT REGARDING DOOR MANUAL LOCK LEVER DISENGAGES FROM DOOR TRIM PANEL (REPAIR LOCK LEVER) *JG

SUBJECT REGARDING FRONT AND REAR SIDE DOOR ACCESS DOOR NOISE (REPLACE DOOR CHECK LINK).

INFORMATION REGARDING FRONT AND REAR SIDE ACCESS DOOR NOISE.

SUBJECT ON DOOR MANUAL LOCK LEVER DISENGAGES FROM DOOR TRIM PANEL.

SUBJECT REGARDING NEW DOOR CHECK LINK.

SOME VEHICLES MAY EXPERIENCE A SQEAKING SOUND COMING FROM THE FRONT DOORS WHILE OPENING AND CLOSING.

CUSTOMERS MAY COMPLAIN THAT THEIR CENTER CONSOLE LOCK IS NOT OPERATIONAL.

INFORMATION REGARDING PICK-UP BOX REINFORCMENT KITS, FOR WHEN ADDING TOOLBOXES OR LADDER RACKS.

INFORMATION REGARDING NEW PICKUP BOX REINFORCEMENT KITS WHICH ARE AVAILABLE FOR CUSTOMERS WHO MAY WANT TO INSTALL A...

SUBJECT REGARDING ONSTAR LABOR OPERATIONS.

SOME CUSTOMERS MAY COMPLAIN THAT THEIR FULL-SIZE PICKUP TRUCKS MAY BE HARD TO START OR INTERMITTENTLY DOES NOT START.

REAR AXLE RETAINER BUTTON BREAKAGE.

SUBJECT REGARDING A ONE-TWO SHIFT SHUTTER WHICH MAY OCCUR ON LIGHT THROTTLE ACCELERATION.

INFORMATION REGARDING REVISED TRANSMISSION CALIBRATION TO ADDRESS DRIVELINE GROWL OR PROP SHAFT RING NOISE.

SUBJECT REGARDING HARSH SHIFTS ON AUTOMATIC TRANSMISSION.

THE DELETION OF THE STEERING COLUMN / WHEEL LOCKING FEATURE ON VEHICLES WITH AUTOMATIC TRANSMISSIONS.

ESSENTIAL TOOLS FOR SERVICING THE ALLISON TRANSMISSION.

VEHICLES MAY EXPERIENCE THE BRAKE SYSTEM WARNING LIGHT NOT ILLUMINATING.

LOW EFFORT PARKING BRAKE APPLY SYSTEM.

BRIEF INFORMATION CONCERNING PARKING BRAKE SHOE ADJUSTMENT.

SUBJECT REGARDING PROCEDURES TO INITIALIZE THE SIR (SUPPLEMENTAL INFLATABLE RESTRAINT) SYSTEMD URING PRE-DELIVERY INSPECTION.

THE SEATBELT REPLACEMENT PARTS DO NOT MATCH OR ARE UNABLE TO LATCH TO THE EXISTING BELT.

SOME CUSTOMERS HAVE BEEN NOTICING AND / OR COMPLAINING THAT THEIR STEERING COLUMN LOCK SHAFT DOES NOT LOCK.

CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL.

THIS IS A PRODUCT UPDATE VME THAT INVOLVES CERTAIN PICK-UP TRUCKS.

IPC, INTERIOR LIGHTS AND/OR HEADLAMPS FLICKER.

SOME VEHICLES EQUIPPED WITH 4-WHEEL DRIVE EXTENDED CAB AND SHORT BED MAY EXPERIENCE A BUMP OR CLUNK ON STOP OR ACCELERATION.

CUSTOMERS MAY COMPLAIN ON CERTAIN MODELS INCLUDING 2002 GMC/CHEV TRUCK C3 AND 2001 CHEVROLET TRUCK C3 THE SECONDARY...

SOME VEHICLES MAY EXPERIENCE REPEAT FUEL PUMP FAILURES.

SOME CUSTOMER MAY COMMENT THAT THE WINDOWS DO NOT DEFROST ON A TIMELY BASIS.

REVISED STEERING WHEEL POSITION SENSOR OR STEERING SHAFT LOWER BEARING REPLACEMENT PROCEDURE AND STEERING WHEEL POSITION SENSOR CENTERING PROCEDURE.

SQUEAK NOISE FROM REAR LEAF SPRINGS.