GM 15854396 Adapter,Engine Mount Bracket

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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, then 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 bushing in the center of the mount. Check for relative movement between the mount and the engine or frame (use a large screwdriver or prybar to attempt to move the mounts). If movement is noted, lower the engine and tighten the mount fasteners. For replacement, disconnect the negative battery cable from the battery. On all engines except the 2.0L supercharged, remove the engine air filter and housing. Raise the vehicle and support it securely on jackstands. 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. Caution: Do not disconnect more than one mount at a time unless the engine will be removed from the vehicle. Remove the engine mount through-bolt/nuts and detach the mount from the chassis bracket. Remove the nuts holding the mount to the engine bracket. Installation is the reverse of removal. Use thread-locking compound on the mount bolts and be sure to tighten them securely. The engine/transaxle assembly must be "balanced" in its weight distribution among the several powertrain mounts, before the mounting bolts are tightened. Loosen all the mount bolts, then shake the engine from side to side and front-to-rear as much as possible to settle it. The tighten all the mounts in this order: transmission mount-to-transmission bolts (rear first, then middle, then front); engine mount-to-bracket bolts (center first); shake the engine again front-to-rear; rear mount through-bolt; then front mount through-bolt. Reconnect the battery.