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Service bulletin 970901761201

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id54335
Published by NHTSA1998-03-30
Manufacturer's number970901761201
Manufacturer's date1997-09-01
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

FALSE HVAC HISTORY DTC B0408 AND/OR HEATER & A/C TEMPERATURE CONTROL DOOR MOTOR BECOMES INOPERATIVE WHILE USING SCAN TOOL. *YC

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

Glass, wipers and mirrors, Heating and air conditioning

Trouble codes named

B0408

Vehicles listed
CHEVROLET CHEVROLET1998
GMC GMC1998
OLDSMOBILE BRAVADA1998

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
3176A2004-11-09. Service bulletin. HEAT COMING FROM VENTS WITH HVAC OFF. *TT
020802004-07-10. Service bulletin. REPEAT HVAC ACTUATOR REPLACEMENT. *TT
0308670042003-09-30. Service bulletin. PARTS AVAILABILITY FOR SUNROOF REPAIRS. *TT
1512002001-03-27. Service bulletin. CUSTOMER MAY COMMENT THAT THE REARVIEW MIRRORS, POWER DOOR LOCKS AND REAR HATCH DO NOT OPERATE. *TT
0008510012000-12-05. Service bulletin. SOME CUSTOMERS MAY COMMENT THAT THE BLACK PLASTIC HOUSING AROUND THE OUTSIDE REAR VIEW MIRROR TURNS CHALKY OR IS DULL IN COLOR. *TT
988612081998-08-28. Service bulletin. COMMENTS THAT THE HVAC BLOWER FAN RUNS CONTINUOUSLY WITH IGNITION OFF. *YC