Installation Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Coolant Heater

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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 .

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

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Connect the coolant heater cord electrical connector.

Fig 3: Locating Oil Cooler Hose Bracket & Adapter Bolts

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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

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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

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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 Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .