Calais FWD V6-181 3.0L (1986)
Drive Belt: All Technical Service Bulletins
Engine - Belt Chirp or Squeal
SUBJECT
BELT CHIRP OR SQUEAL (SERVICE PROCEDURE)
MODELS/YEARS 1986-90 CUTLASS CALAIS, CUTLASS CIERA, EIGHTYEIGHT, NINETY-EIGHT AND TORONADO MODELS EQUIPPED
WITH 3.0L, 3.8L, 3300 OR 3800 ENGINES (VIN CODES L, 3, B, N, C)
NUMBER:
90-T-144
CORP.REF.NO: 806103R
DATE:
July 1990
SECTION:
6A
NOTICE:
This bulletin supersedes Dealer Technical Bulletin 88-T-69 dated May, 1988 and the June, 1986 Service Guild article on this subject.
Please discard bulletin 88-T-69. This bulletin was revised to include 1989 and 1990 model years, add the Cutlass Calais and 3300 engine,
and to include torque specifications on rear bolts.
Some 1986 through 1990 vehicles equipped with a single belt accessory drive system, may experience a belt chirp or squeal that cannot be corrected by
normal service procedures. It has been determined that the root cause of this condition is pulley misalignment. The following procedure may be used to
correct alignment as necessary.
Figure 1
The two most likely pulleys requiring alignment are the A/C compressor or crankshaft pulley. To determine which component must be shimmed, visually
sight belt spans No. 1, 2, and 3 from View "A", (See Figure 1).
