Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Oil Pan Skid Plate & Bolts

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system/engine block. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the oil pan skid plate bolts and plate, if equipped.

Fig 2: View Of Oil Cooler Hose Bracket & Adapter Bolts

Courtesy of GENERAL MOTORS CORP.

For vehicles with regular production option (RPO) L76 (6.0L), perform the following steps. Otherwise, proceed to step 9.
Remove the oil cooler hose bracket bolt (1), if equipped.
Remove the oil cooler hose adapter bolts (2), if equipped.
Remove and discard the oil cooler hose adapter gasket, if equipped.
Position the oil cooler hose adapter end out of the way, if equipped.

Fig 3: Locating Coolant Heater Cord

Courtesy of GENERAL MOTORS CORP.

Disconnect the coolant heater cord electrical connector.

Fig 4: Locating Coolant Heater

Courtesy of GENERAL MOTORS CORP.

NOTE: Do not score the surface of the engine block hole when removing the coolant heater.

Remove the coolant heater from the engine block.
Remove any burrs, sealer, or other rough spots.