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Service bulletin 431109A

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 id37949
Published by NHTSA1995-02-09
Manufacturer's number431109A
Manufacturer's date1994-12-01
Replaces43-11-09
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

HVAC DISPLAY ERRORS AND/OR BLOWER OPERATION CONCERNS. *TW

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

Vehicles listed
BUICK RIVIERA1995
OLDSMOBILE AURORA1995

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
7316081997-08-14. Service bulletin. EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR. *TW
5312081996-04-25. Service bulletin. AIR CONDITIONING SYSTEM FAILURE - REFRIGERANT LOSS ( REPLACE DIAGONAL BRACES AND AND UPPER MOUNTING BOLTS). *SD
5311011995-11-01. Service bulletin. REDUCED HEATER PERFORMANCE ON THE DRIVER'S SIDE. *TW
5310041995-11-01. Service bulletin. DOOR GLASS RATTLES WHEN CLOSING THE DOOR. *TW