S10/T10 P/U 2WD V6-262 4.3L (1988)
Torsion Bar: All Technical Service Bulletins
Suspension - Knocking/Rattling Noise
Number:
91-362-3C
Section:
3C
Date:
JULY 1991
Corporate Bulletin No.: 163302
Subject:
KNOCKING NOISE-TORSION BAR SUPPORT INSULATOR DAMAGED/BROKEN
Model and Year:
1988-91 T TRUCKS
Some owners of 1988-1991 T trucks may comment about a knocking or rattling sound coming from the underside of their vehicle. This sound can occur
if the torsion bar support insulator is damaged or breaks. To correct this condition, a new more durable torsion bar insulator has been released. The new
insulator is visually identical to the previous insulator and the installation procedure has not changed (reference S-10 Service Manual, Section 3C).
VEHICLES INVOLVED:
The new torsion bar support insulators have been installed on vehicles after the following VIN breakpoints.
Shreveport
1GDCT14Z9M8801063
Pontiac West
1GCCS14A7M0190577
Moraine
1GCCS19R1M2273070
SERVICE PARTS INFORMATION:
Part Number
Description
15677665
Insulator, Torsion Bar Support
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
Labor Operation:
E3340
Use applicable labor time guide for labor hours.
