Pontiac 12594433 Bracket, Engine Mount Strut & Engine Lift

To replace the mounts, disconnect the cable from the negative terminal of the battery, raise the vehicle securely on jackstands, and remove the nuts attaching the mount studs to the engine subframe. Attach an engine hoist to the top of the engine for lifting, avoiding the use of a jack under the oil pan to prevent damage to the oil pump pick-up. If a hoist is unavailable, casting lugs on each side of the engine block can support the engine's weight during mount replacement. Raise the engine slightly until the mount can be unbolted from the block, then remove it from the vehicle.

To check the mounts, raise the vehicle securely on jackstands and position a jack under the engine oil pan with a large block of wood in between. Carefully raise the engine just enough to relieve the weight from the mounts, ensuring no part of your body is under the engine when it is only supported by a jack.

Applying rubber preservative can help slow deterioration.

They need to be replaced, which can be done with the engine/transmission still in the vehicle.

There are four mounts connecting the drivetrain to the chassis: two at the timing chain end (one front and one rear), one at the transaxle end, and one upper mount linking the engine torque strut to the body near the top of the radiator.

To inspect the front mount, raise the engine slightly to create tension on the rubber mount using a hoist or jack placed under the forward edge of the oil pan. Check for heat cracks on the hard rubber surface, rubber separating from the metal plate, or splits through the center.

Yes, for the upper mount strut, disconnect the negative battery cable again and remove the bolts and nuts from the strut and brace, ensuring the lockout feature is off if necessary.

During the check, the engine must be raised slightly to remove the weight from the mounts. Raise the vehicle securely on jack stands, position a jack under the engine oil pan with a large block of wood between the jack head and the oil pan, and carefully raise the engine just enough to relieve the weight on the mounts.

For replacement, disconnect the negative battery cable and raise the vehicle on jackstands if not already done. Ensure that the Theftlock audio system's lockout feature is turned off before disconnecting the battery. Remove the engine torque strut, then raise the engine slightly with a jack or hoist, removing the fasteners to detach the mount from the frame. Next, remove the mount-to-block bracket bolts or nuts and detach the mount.