DeVille V8-4.6L VIN 9 (1995)
4.
A loose lumber noise may be heard by driving at speeds typically between 10 - 45 mph over both smaller sharp bumps and larger bumps (more
prevalent on small sharp bumps). Replace the front upper strut mounts with P/N's 22178707 (for all 1994-96 models and 1997 DeVille, Eldorado)
and 22178708 (for 1997 Concours, Eldorado ETC, Seville).
Important:
To distinguish between Steps 4 and 5, use the ChassisEAR J 39570 and attach clips to the front engine mount and upper strut mount/shock tower
area. Please note:
^
Noise will be heard if ChassisEAR is attached to the strut. You will need to familiarize yourself to a non-complaint car. Normal operating
sounds may lead you to service a good car.
^
More noise will be heard if ChassisEar is attached to the strut rod top nut than to one of the three strut mount fasteners in the strut tower. You
will hear strut operating noises in the nut, while the noise heard in the strut mount fasteners will be more quiet since the job of the strut mount
is to dampen. Any noise heard from the strut rod is likely normal; strut replacement will NOT affect this noise. To verify, compare to a known
good car.
^
Assure that ChassisEar clips are securely affixed. Any movement of the clips to the fastening point may result in false noise being generated.
^
Do not test drive the vehicle with the hood open to the secondary latch as the hood movement can make false noise. Latch the hood fully.
5.
If the lumber noise is produced at speeds only below 20 mph while driving over a larger bump, then it may be engine mount related. This noise
sounds as if it is coming from the middle to under dash area, while Step 4 sounds as if it is coming from above the dash. On vehicles equipped with
a 4.6L engine, replace the left engine mount and the right transaxle mount. On vehicles equipped with a 4.9L engine, replace the left engine mount
only.
^
4.6L left engine mount: P/N 22171688
^
4.6L right transaxle mount: P/N 22171682
^
4.9L left engine mount: P/N 22171683
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
