GM 15829208
Motor Mount, Passenger Side

The procedure for right side Engine Mount Bracket (2500 LY6) replacement requires the removal of the Engine Mount. After removing all Engine Mount Bracket bolts you can proceed to remove the Engine Mount Bracket. Set the Engine Mount Bracket on the frame before you fully remove the original adhesive patch traces. After treating the bolt threads with denatured alcohol or a comparable solution allow them to reach full dryness. The bolts need gm threadlock gm p/n 12345382 (Canadian P/N 10953489) or an equivalent product applied to them. Notice must be taken when installing fasteners to prevent vehicle interior or exterior damage. Fasten the Engine Mount Bracket bolts with proper torque of 65 nm (48 lb ft). Finally, install the Engine Mount.

The first process when replacing the right side Engine Mount requires complete removal of the air cleaner outlet duct. To replace the Engine Mount owners should first separate the vehicles front drive axle along with its bracket bolts and bracket if they have four wheel drive. The Exhaust Manifold together with the a/c compressor bracket must be taken off next. Before handling the Engine Mount to frame bolts always eliminate support from crankshaft balancer and Oil Pan. A screw type adjustable jack should be positioned under the tab on the engine block before removing the Engine Mount to engine bolts through the wheelhouse opening. Upper the engine by using the adjustable jack until you reach a suitable height for removing the Engine Mount. The Engine Mount should be positioned to the engine before working through the wheelhouse opening to install mounting bolts to the engine with a torque specification of 50 nm (37 lb ft). Adjust the engine position to make sure the frame surface touches the Engine Mount before removing the adjustable jack. Start installation of the middle Engine Mount bolt first before tightening it to 65 nm (48 lb ft) then proceeding with each of the side bolts. Reposition the a/c compressor bracket before tightening both 90 nm (67 lb ft) bolts securing the front drive axle bracket. Vehicles with 4wd require additional installation of the front drive axle bracket and bolts before tightener to this torque specification. Finally, reinstall the Exhaust Manifold.

Start by raising your vehicle for transmission mount replacement in an allison automatic transmission. Support the transmission with a transmission jack until you remove the transmission mount retaining nuts at the support points. First lift the transmission until the mount's weight is reduced before removing all transmission mount-to-transmission or transfer case adapter mounting bolts. You should gently lift the transmission until you can pull out the transmission mount before extracting it from the vehicle. Place the new transmission mount within the vehicle before installing it onto the transmission or transfer case adapter mounting bolts while torquing them to 50 n.m (37 lb ft). Secure the transmission mount to its retaining nut or nuts at 50 n.m (37 lb ft) torque. Complete your work by taking away the transmission jack while lowering the vehicle to the ground.

Install the engine mount side bracket bolts and tighten to 50 Nm (37 lb ft).

Install the engine mount bracket, ensuring to remove all traces of the original adhesive patch and clean the threads of the bolts with denatured alcohol or equivalent.

Raise the vehicle halfway, ensuring not to support the engine by the crankshaft balancer or oil pan.

Position and install the engine mount side bracket and its bolts, tightening them to 50 Nm (37 lb ft).

Install the transmission mount to crossmember nut, tightening it to 40 Nm (30 lb ft), and then lower the vehicle.

Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or an equivalent to the bolts.

Install the transmission mount to crossmember nut, tightening it to 40 N.m (30 lb ft), and then lower the vehicle.

Begin by removing the upper intake manifold sight shield.

Raise and support the vehicle securely.

Install the engine mount bracket bolts and tighten them to 65 Nm (48 lb ft).

Position the engine mount side bracket to the engine, install the side bracket bolts, and tighten them to 50 N.m (37 lb ft).

Install the engine mount to engine bolts through the wheelhouse opening and tighten to 50 Nm (37 lb ft).

Install the engine mount and its bolts, tightening them to 50 N.m (37 lb ft).

Install the engine mount bracket, ensuring to remove all traces of the original adhesive patch.

Lower the engine and reinstall the starter.