FRONT END VIBRATION,SHAKE,OR LOOSENESS FEEL OVER BUMPS
SUBJECT: FRONT END VIBRATION, SHAKE, OR LOOSENESS FEEL OVER BUMPS (REPLACE TRANSMISSION MOUNT)
VEHICLES AFFECTED: 1993 "E/K" MODELS WITH 4.6L ENGINE (VIN 9, RPO L37)
CONDITION:
--------- Some 1993 Cadillac Eldorados (before VIN 600475) and 1993 Sevilles (before VIN 800965) with the Northstar powertrain (VIN 9 - RPO L37) may experience a condition of front end vibration, shake, or "loose" feeling when riding over bumps in the road.
CAUSE:
----- This condition may be caused by the left transmission mount not providing sufficient damping.
CORRECTION:
---------- To repair this condition use the following procedure:
1. Raise vehicle and support.
2. Remove left front tire and wheel.
3. Disconnect RSS position sensor from lower ball stud.
4. Remove the forward splash panel.
5. Use transmission support fixture, J-28664, to support the transaxle for removal of the transmission mount.
NOTICE: DO NOT SUPPORT THE TRANSAXLE BY THE BOTTOM PAN WITH A JACK STAND OR GASKET DAMAGE MAY RESULT.
6. Remove the left transmission mount and replace with P/N 22145407. Torque bolts and nuts to 47 N.m (35 lbs. ft.).
7. Reinstall the forward splash panel.
8. Reconnect RSS position sensor.
9. Reinstall left front tire and wheel.
10. Lower vehicle.
For vehicles repaired under warranty use:
Labour Time: 0.4 hour.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
