Achieva V6-3300 3.3L (1992)
Engine Mount: All Technical Service Bulletins
A/T - Grunt/Squeak Shifting from Park to Reverse/Drive
Group Ref.: 6 - Engine
Bulletin No.: 336102A
Date: June, 1994
SUBJECT:
GRUNT, SQUAWK OR SQUEAK NOISE WHEN SHIFTING FROM PARK TO REVERSE OR DRIVE AND/OR UNDER HEAVY ENGINE
LOAD (USE DIAGNOSTIC PROCEDURE)
MODELS:
1992-93 BUICK SKYLARK
1992-93 CHEVROLET CORSICA/BERETTA
1992-93 OLDSMOBILE ACHIEVA
1992-93 PONTIAC GRAND AM
ENGINE APPLICATION:
2.3L (VIN 3 - RPO L40)
2.2L (VIN 4 - RPO LN2)
2.3L (VIN D - RPO LD2)
3.3L (VIN N - RPO LG7)
3.1L (VIN T - RPO LHO) WITH AUTOMATIC TRANSMISSION ONLY
THIS BULLETIN IS BEING REVISED TO ADD ENGINE APPLICATIONS AND REVISE/ADD PART NUMBERS. PLEASE DISCARD
BULLETIN 336102 (GROUP REFERENCE 6 - ENGINE.)
CONDITION:
Some owners may comment about a grunt, squawk or squeak noise when shifting from park to reverse or drive. The same noise may also be heard during
heavy engine load, such as quick acceleration. The noise will most likely occur in cold ambient temperatures or wet conditions. This noise may be
misdiagnosed as coming from the exhaust seal (except RPO LN2). Use the procedure found in "Service Information" below to determine the location of
the noise.
CAUSE:
On 1992-93 vehicles, the lower engine mount strut rubber may move against its metal casting during the shift or heavy engine loads. On 1992 2.3L
engines, a similar noise can be caused by high clamp load on the exhaust seal. This condition is addressed by corporate bulletin number 276101R
(divisional numbers listed below):
DIVISION
BULLETIN NUMBER
Pontiac
92-6-20A
Oldsmobile
92-T-54A
Buick
92-6-4A
GM of Canada
92-623-102
CORRECTION:
When the diagnosis indicates the exhaust system is at fault on 1992 2.3L engines, refer to corporate bulletin number 276101R to repair the exhaust
system. All 1993 model year production vehicles with 2.3L engines have a redesigned exhaust manifold and seal. Install revised lower engine mount
strut, P/N 22594147 - 2.2L and 2.3L, or P/N 22637875 - 3.1L and 3.3L (DO NOT use for 1994 models) when diagnosis indicates the lower engine
mount strut is at fault. Vehicles built after the following VIN breakpoints have the revised lower engine mount strut installed in production:
2.3L and 2.2L engines with automatic transmissions:
