LeSabre V6-231 3.8L VIN C SFI (1990)
Sunroof / Moonroof Switch: All Technical Service Bulletins
Sunroof - Failure
Bulletin 90-10-14
Date Feb. '90
Ref. No. 90-034-10
Corp. Ref. No. 901504
SUBJECT:
ELECTROSTATIC DISCHARGE CAUSES FAILURE OF THE EXPRESS SUNROOF
MODELS AFFECTED:
1990 BUICK PARK AVENUE AND ULTRA
An electrostatic discharge from a vehicle occupant to the 1990 Buick Park Avenue and Ultra sunroof switch could damage the express open sunroof
module. As a result, the sunroof would operate in the open direction only.
To eliminate the potential problem, the chrome sunroof switch button is being changed to plastic. This change took place on 10/31/89.
Servicing a vehicle which has experienced this failure mode requires replacing the chrome button switch (Buick and Oldsmobile part number 20396960;
Cadillac part number 20060925) with a new plastic button sunroof switch (Buick and Oldsmobile part number 20429984; Cadillac part number
20436618) and replacing the damaged express sunroof module (Buick, Oldsmobile and Cadillac part number 12503328).
Parts are expected to be available on January 22, 1990. Until then normal part orders will not be accepted by GMSPO. Only verifiable emergency VIP
orders will be accepted. SPO will make every effort to obtain parts. All parts will be placed on 400 control to waive VIP surcharges. However, the part
will be shipped premium transportation at dealer's expense. All other order types will be canceled as incorrectly ordered while the 400 control is in place.
