Cutlass L4-138 2.3L VIN A FI HP (1990)
Power Steering Pump: All Technical Service Bulletins
Power Steering Pump Pulley - Wobble Condition
SUBJECT:
POWER STEERING PUMP DRIVE PULLEY WOBBLE AND REVISED SERVICE MANUAL PROCEDURE FOR POWER
STEERING PUMP DRIVE PULLEY REMOVAL AND INSTALLATION (FIRST & SECOND DESIGN)
MODELS/YEARS:
1990 CUTLASS CALAIS AND CUTLASS SUPREME
MODELS EQUIPPED WITH 2.3L ENGINE (VIN CODE D & A)
NUMBER:
90-T-46
CORP. REF. NO: 976113
DATE:
February 1990
SECTION:
6A7
This bulletin is separated into two parts. Part I addresses 1990 Quad 4 power steering pump drive pulley wobble (condition, cause and correction). Part
II revises the 1990 service manual procedure for power steering pump drive pulley removal and installation on the Quad 4 engine.
PART I
POWER STEERING PUMP DRIVE PULLEY WOBBLE
CONDITION:
1990 Cutlass Calais and Cutlass Supreme models equipped with a 2.3L Quad 4 or High Output Quad 4 engine built prior to engine number D041139,
were assembled with a second design power steering pump drive pulley. Some of these pulleys may exhibit a noticeable wobble (side-to-side movement)
while the engine is running.
CAUSE:
This condition is the result of excessive lateral run-out of the power steering pump drive pulley.
CORRECTION:
Complaint vehicles can be corrected by installing a first design power steering pump drive pulley, part number 22532167. The first design pulley has
been reinstated in 1990 Quad 4 and High Output Quad 4 production effective with engine number D041139.
PARTS INFORMATION:
Parts are currently available from GMSPO.
PULLEY DESIGN IDENTIFICATION:
First Design
1987 through 1989: Pulley has solid face (no holes) part number
22532167
Second Design
1990: Pulley face has three (3) holes part number 22545412.
1990 Cutlass Calais and Cutlass Supreme models equipped with a Quad 4 engine assembled with the second design pulley that exhibit a wobble
condition, can be corrected by the following service procedure.