Service bulletin 081103
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10003863 |
| Published by NHTSA | 2003-11-05 |
| Manufacturer's number | 081103 |
| Manufacturer's date | 2003-08-11 |
| NHTSA component | POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
NHTSA's summary
THE SERVICE FOUR-WHEEL DRIVE LIGHT OR THE FOUR-WHEEL DRIVE IS INOPERATIVE WITH NO COMMUNICATIONS WITH THE TECH 2, OR C0550 CODE IS STORED IN THE TCCM. *TT
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Transmission and driveline, Transfer case
Trouble codes named
C0550
| CHEVROLET TRAILBLAZER | 2004 |
|---|---|
| GMC ENVOY | 2004 |
| OLDSMOBILE BRAVADA | 2004 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| PIP3366C | 2018-08-20. Service bulletin. This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low (4LO) range. Dealers technician's are advised this condition should be deemed a normal characteristic of 4WD low operation. |
|---|---|
| 05-04-21-003 | 2005-11-09. Service bulletin. SERVICE 4WD LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) C0374 SET. *TT UPDATED 10/05/07. *NJ INSPECT WIRING HARNESS TO TRANSFER CASE SPEED SENSORS, REPLACE WIRING HARNESS. UPDATED 7/18/08 *PE |
| 040421004 | 2005-11-08. Service bulletin. 4WD SWITCH INDICATOR LIGHTS FLASHING, 4WD INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0550 SET. *TT |
| 3424 | 2005-11-02. Service bulletin. ELECTRONIC TRANSFER CASE UNABLE TO COMPLETE SHIFT. *TT |
| 3351 | 2005-05-11. Service bulletin. INTERMITTENT MALFUNCTION INDICATOR LAMP (MIL) WITH DIAGNOSTIC TROUBLE CODE (DTC) C0374 OR ERRATIC 4WD/AWD OPERATION. *TT |
| 01843 | 2004-07-19. Service bulletin. CALIBRATION FOR IMPROVED TRANSFER CASE OPERATION IN AWD MODE. *TT |
| 030421006 | 2003-12-04. Service bulletin. SERVICE 4WD LIGHT ON, 4WD INOPERATIVE, HARSH ENGAGEMENT OF 4WD, NO COMMUNICATION WITH TRANSFER CASE CONTROL MODULE (TCCM), TCCM DIAGNOSTIC TROUBLE CODE (DTC) C0550 SET. *TT |
| 020421006C | 2003-12-04. Service bulletin. INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT |
| 01446A | 2003-11-24. Service bulletin. SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES. *TT |