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Service bulletin 431108

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 id37847
Published by NHTSA1995-01-11
Manufacturer's number431108
Manufacturer's date1994-11-01
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

HVAC SYSTEM MAY INTERMITTENTLY TURN ON IN DEFOG OR DEFROST MODE BY DEFAULT. *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 LESABRE1992, 1993, 1994
BUICK PARK AVENUE1992, 1993, 1994

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
988390111998-08-03. Service bulletin. SOME CUSTOMERS MAY COMMENT ABOUT ON A GAP BETWEEN THE PASSENGER SUPPLEMENTAL INFLATABLE RESTRAINT (PSIR) MODULE AND THE INSTRUMENT PANEL TRIM PLATE. *YC
7316081997-08-14. Service bulletin. EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR. *TW
9315311995-11-01. Service bulletin. LITTLE TO NO AIR FLOW FROM SIDE WINDOW DEFROSTER DUCTS. *TW
5382031995-11-01. Service bulletin. WINDSHIELD WIPER BLADE CHATTER. *TW