Installation Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Coolant Heater

Courtesy of GENERAL MOTORS CORP.

If reusing the old coolant heater, apply thread sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the coolant heater to the engine block.
Tighten: Tighten the coolant heater to 50 N.m (37 lb ft).

Fig 2: View Of Coolant Heater Cord

Courtesy of GENERAL MOTORS CORP.

Connect the coolant heater cord electrical connector.

Fig 3: Locating Oil Cooler Hose Bracket & Adapter Bolts

Courtesy of GENERAL MOTORS CORP.

For vehicles with RPO LY6 (6.0L) perform the following steps otherwise proceed to step 9.
Position the oil cooler hose adapter end.
Install a NEW oil cooler hose adapter gasket.
Install the oil cooler hose adapter bolts (2).
Tighten: Tighten the bolts to 12 N.m (106 lb in).
Install the oil cooler hose bracket bolt (1).
Tighten: Tighten the bolt to 25 N.m (18 lb ft).

Fig 4: View Of Oil Pan Skid Plate & Bolts

Courtesy of GENERAL MOTORS CORP.

For 2500 series vehicles, position the oil pan skid plate and install the 2 front bolts and tighten the 2 rear bolts, if equipped.
Tighten: Tighten the bolts to 20 N.m (15 lb ft).

Fig 5: View Of Oil Pan Skid Plate & Bolts

Courtesy of GENERAL MOTORS CORP.

For 1500 series vehicles position and install the oil pan skid plate and bolts, if equipped.
Tighten: Tighten the bolts to 20 N.m (15 lb ft).
Lower the vehicle.
Fill the cooling system/engine block. Refer to Draining and Filling Cooling System .