Engine - Accessory Drive Noise Diagnosis

9234cadillac01

NO.: 92-I-46
DATE: June, 1992
GROUP: 6
CORP. NO.: 216005


SUBJECT:
1990-1992 4.5L, 4.9L ACCESSORY DRIVE NOISE DIAGNOSIS


Many dealers have had great success diagnosing engine and accessory drive noises using a series of special length serpentine drive belts which allow the engine to be operated temporarily with each of the driven accessories inoperative. A kit containing one each of these special length belts is available from Kent-Moore under J-36312 for all 1985-1989 engines. (These engines incorporate an AIR pump in the accessory drive.) Now available is a similar set of belts for 1990-1992 engines without the AIR pump. Dealers may order this kit J-39429 using the attached order form.

We believe this source and their equipment to be reliable. There may be additional manufacturers of such equipment, however, General Motors does not endorse, indicate any preference for, or assume any responsibility for the products or equipment from these firms or for any such items which may be available from other sources.