GM 22576879 Bracket, Engine Mount Strut

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Engine mounts seldom require attention, but broken or deteriorated mounts should be replaced immediately, or the added strain placed on the driveline components may cause damage or wear. During the check, the engine must be raised slightly to remove the weight from the mounts. Raise the vehicle and support it securely on jackstands. Support the engine as described above. If the special support fixture is unavailable, position a jack under the engine oil pan. Place a large block of wood between the jack head and the oil pan, then carefully raise the engine just enough to take the weight off the mounts. Check the mounts to see if the rubber is cracked, hardened, or separated from the metal plates. Sometimes the rubber will split right down the center. Check for relative movement between the mount plates and the engine or frame (use a large screwdriver or pry bar to attempt to move the mounts). If movement is noted, lower the engine and tighten the mount fasteners. Apply rubber preservative to the mounts to slow deterioration. For front mount replacement, detach the negative battery cable from the battery. Remove the upper mount nut. Raise the engine off the mount. Remove the two lower mount nuts. Remove the mount. Place the new mount in position and install the nuts. Gently lower the engine and tighten the nuts securely. Reconnect the negative battery cable. For rear mount replacement, detach the negative battery cable from the battery. Remove the right lower splash. Raise the engine off the mount. Remove the four mount-to-bracket nuts. Remove the mount from the vehicle. Installation is the reverse of removal. Gently lower the engine. Tighten the nuts securely. Reconnect the negative battery cable.

The engine can be raised slightly by using a jack under the engine oil pan, with a block of wood placed between the jack head and the oil pan.