Service bulletin 990421005
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 | 10000081 |
| Published by NHTSA | 2003-02-12 |
| Manufacturer's number | 990421005 |
| Manufacturer's date | 2005-12-01 |
| Replaces | 990421005E |
| NHTSA component | POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
NHTSA's summary
TRANSFER CASE SHUDDER. *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
| CHEVROLET ASTRO | 1999 to 2005 |
|---|---|
| GMC SAFARI | 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
| OLDSMOBILE BRAVADA | 1999, 2000, 2001 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 3012B | 2004-08-23. Service bulletin. THE NVG 136 ALL WHEEL DRIVE (AWD) TRANSFER CASE AND THE 236 AND 246 NVG SELECTABLE TRANSFER CASES OPERATING IN THE AUTO MODE MAY EXHIBIT A CONDITION OF A VIBRATION/SHUDDER DURING LOW SPEED TURNS SUCH AS A PARKING LOT MANEUVER, UP TO APPROXIMATELY 5 MPH. *TT 3012A NOT YET RECEIVED. *TT |
|---|---|
| 01409 | 2003-11-22. Service bulletin. THE NVG 136 ALL WHEEL DRIVE (AWD) TRANSFER CASE AND THE 236 AND 246 NVG SELECTABLE TRANSFER CASE SHUDDER ON TURNS. *TT |