Cutlass Ciera Cruiser V6-3300 3.3L (1989)
Piston: All Technical Service Bulletins
Engine - Rap Noise During Warm-Up
SUBJECT
ENGINE RAP NOISE DURING WARM-UP
(NEW PISTON ASSEMBLY)
MODELS/YEARS
1989-90 CUTLASS CIERA AND CUTLASS CALAIS WITH
3300 ENGINE
NUMBER:
90-T-169
CORP.REF.NO: 006106
DATE:
October 1990
SECTION:
6A
Some owners of 1989-90 Cutlass Ciera and Cutlass Calais models equipped with 3300 V6 engines may comment on an engine "rap" or "diesel" type
noise prior to the engine reaching normal operating temperature. The noise will normally appear after one or two minutes of operation and disappear
after ten or fifteen minutes of operation.
A new piston assembly has been released to correct this condition. The part number of the new piston assembly is 24501065. It is recommended that all
six pistons be replaced when servicing this condition.
The new piston assembly went into production after June 15, 1990. The date the engine was built can be found on a sticker on the rear valve cover and
can be viewed by looking past the brake master cylinder from the driver's side of the car.
Parts are currently available from GMSPO.
