# Service bulletins for the 2000 GMC T\-Series

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

56 bulletins from NHTSA, as of 2026-10-19.

- [PIT5399](/bulletins/10114474.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
- [PIC4310L](/bulletins/10114470.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\); ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.
- [PIC5953A](/bulletins/10114431.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
- [PIT5264C](/bulletins/10114408.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn\-by\-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn\-By\-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a "500 phone number" The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available.
- [PIC3278F](/bulletins/10114343.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician the steps needed to diagnose and repair the vehicles that may have unwanted or phantom phone calls. Technician will need to determine what type of call the customer is having that is unwanted. The vehicle may receive an incoming call just like any other phone. Typically the customer will hear the phone ringing in the vehicle. This scenario also includes incoming Bluetooth calls. One type of unwanted call can be made if the key pad is faulty the OnStar system will try to make a blue button call for shorted voltage in the circuits. The OnStar module could have an internal fault and produce a "Phone Unavailable" audio message also it may have a Diagnostic Trouble Code U1500 or B1000. Refer to diagnostics for the Diagnostic Trouble Code making sure to follow any applicable Bulletins or Preliminary Information sheets. A "Ready" or "OnStar ready" audio message heard while driving. In some cases it has been found that the customer is inadvertently pressing the ?push to talk? button on the steering wheel controls. On rare occasions, other issues in the steering column or Steering Wheel Control system may induce this concern.
- [PIC4310K](/bulletins/10114342.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.
- [05\-06\-04\-035E](/bulletins/10113662.md), 2017-08-15, Service bulletin: FUEL SYSTEM, OTHER. This informational bulletin provides dealership personnel with information on flexible fuel vehicles \(FFVs\) and the usage of E85 fuel in GM vehicles.
- [PIC3718E](/bulletins/10112664.md), 2017-08-15, Service bulletin: ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles may have a no power or no connect concern. Technician will find that the OnStar led is red and Diagnostic Trouble Code U1500 is set. Technician will need to replace the Vehicle Communication Interface Module if the Station Identification number falls in the ranges 14,000,000 \- 16,000,000 or 22,000,000 \- 23,200,000.
- [PIT3173C](/bulletins/10112641.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician that fluid contamination may be directed to one of the following testing centers according to the type of fluid needing testing. Dealer should send the correct fluid to the proper testing center.
- [PIP5163A](/bulletins/10112116.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
- [PIC5953](/bulletins/10112013.md), 2017-08-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
- [SB\-10\-08\-50\-003B](/bulletins/10042986.md), 2012-02-06, Service bulletin: SEATS:FRONT ASSEMBLY:HEAD RESTRAINT. GENERAL MOTORS: INFORMATION PROVIDED BY BULLETIN FOR ALL 2012 AND PRIOR GENERAL MOTOR TRUCKS AND PASSENGER VEHICLES REGARDING THE ADJUSTABLE COMFORT AND CUSTOM UPHOLSTERY OF THE DRIVER AND THE PASSENGER HEAD RESTRAINT. \*PE
- [PIP\-4695](/bulletins/10032435.md), 2010-03-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. GM: LOSS OF POWER HESITATES ON ACCELERATION. 4.3, 4.8, 5.3, 5.7 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E MAY EXPERIENCE A CONDITION OF HESITATES, MISSES OR LOSS OF POWER UNDER ACCELERATION. THE VEHICLE MAY OPERATE AS IF IT IS IN REDUCED POWER MODE. \*PE
- [050527001](/bulletins/10017531.md), 2005-11-10, Service bulletin: SERVICE BRAKES, AIR. INFORMATION ON AIR BRAKE PARK BRAKE CHAMBER VENT HOLES TO AVOID WATER INTRUSION. \*TT
- [030526001](/bulletins/10004369.md), 2003-12-04, Service bulletin: PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. RELEASE OF NEW PARK BRAKE CABLE ASSEMBLIES AND LUBRICATION MAINTENANCE INFORMATION FOR CERTAIN MEDIUM DUTY TILT CAB MODELS. \*TT
- [030232044](/bulletins/10004297.md), 2003-12-02, Service bulletin: STEERING. EFFECT OF STEERING BOX LIMITER ADJUSTMENT ON TURNING RADIUS AND POSSIBILITY OF POWER STEERING SYSTEM DAMAGE DUE TO IMPROPER ADJUSTMENT. VARIOUS 1990\-2004 MODELS. \*TT
- [030604014](/bulletins/10001114.md), 2003-04-15, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. OIL PRESENT AROUND TURBO AREA, OIL LEVEL LOW, OIL PRESSURE GAUGE MAY DROP. \*TT
- [020604060](/bulletins/10000739.md), 2003-03-28, Service bulletin: ENGINE AND ENGINE COOLING. AUTOMATIC ENGINE SHUTDOWN FEATURE. \*TT
- [020864020](/bulletins/10000076.md), 2003-02-12, Service bulletin: STRUCTURE:BODY:DOOR. PASSENGER DOOR OUTSIDE REARVIEW MIRROR VIBRATION ON CERTAIN VEHICLES INCLUDING THE 2000 \- 2001 WT500 SERIES MEDIUM DUTY TILT CAB MODELS. \*TT
- [02006](/bulletins/636545.md), 2002-11-09, Service bulletin: POWER TRAIN:CLUTCH ASSEMBLY. THIS MESSAGE ANNOUNCES RECALL 02006 REGARDING A CONDITION IN WHICH THE CLUTCH MASTER CYLINDER PUSH ROD END THAT ATTCHES TO THE CLUTCH PEDAL PIN MAY WEAR TO THE POINT OF NOT PERFORMING AS INTENDED. \*TT
- [010604049A](/bulletins/635630.md), 2002-10-29, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. CUSTOMERS MAY COMMENT ON WHITE EXHAUST SMOKE DURING START\-UP IN COLD AMBIENT TEMPERATURES. \*TT
- [000138005A](/bulletins/634983.md), 2002-10-11, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER. SOME CUSTOMERS MAY COMMENT ABOUT INSTABILITY OF THE A/C CONDENSER OR THAT THE A/C SYSTEM IS INOPERATIVE. \*TT
- [020730017](/bulletins/634968.md), 2002-10-10, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. CONCERN WITH NO SHIFT, HARSH SHIFT, NO ENGAGEMENT, TRANSMISSION IN DEFAULT, CHECK TRANSMISSION WARNING INDICATOR ILLUMINATED, RANGE INHIBITED INDICATOR ILLUMINATED, TRANSMISSION DIAGNOSTIC TROUBLE CODES SET ON F\-MODEL MEDIUM DUTY TILT CAB MODELS. \*TT
- [020232010](/bulletins/634925.md), 2002-10-10, Service bulletin: STEERING:HYDRAULIC POWER ASSIST:PUMP. SUBJECT REGARDING POWER STEERING PUMP NOISE ON F MODEL MEDIUM DUTY TILT CAB MODELS WITH ISUZU 7.8L DIESEL ENGINE. \*TT
- [020523001A](/bulletins/634850.md), 2002-10-09, Service bulletin: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS. SOME CUSTOMERS AND DEALERS MAY COMMENT ON ACCELERATED UNEVEN BRAKE PAD WEAR ON SOME VEHICLE WITH FOUR\-PISTON FIXED CALIPER REAR DISC BRAKES. \*TT

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