Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Raise and support the vehicle. Refer to JACKING AND LIFTING in General Information.
Remove the front skid plate bolt.
Remove the front skid plate.

Fig 1: Removing Engine Oil Cooler Hose/Pipe (4WD)
Courtesy of GENERAL MOTORS CORP.

Important: Have a drain pan ready for the engine oil to drain into.
Remove the bolt from the remote oil filter adapter.
Remove and discard the seals.

Fig 2: Removing Remote Oil Filter Adapter
Courtesy of GENERAL MOTORS CORP.
Lower vehicle.
Remove air cleaner assembly.
Remove the engine oil cooler line retaining rings from the engine oil cooler line quick connectors at the radiator engine oil cooler inlet and outlet. Follow the next 2 steps for the proper retaining ring removal procedure.

Fig 3: Removing Engine Oil Cooler Lines From Radiator
Courtesy of GENERAL MOTORS CORP.
Using a bent-tip screwdriver or equivalent, pull on one of the open ends of the retaining ring in order to rotate the retaining ring.
Rotate the retaining ring around the quick connector until the retaining ring is out of position and can be completely removed.
Discard the retaining rings.
Remove the engine oil cooler lines from the quick connectors at the radiator engine oil cooler inlet and outlet.
Pull the lines straight out from the connectors.
Remove the engine oil cooler lines from the vehicle.

Fig 4: Removing Engine Oil Cooler Lines From Vehicle
Courtesy of GENERAL MOTORS CORP.

Important: Have a drain pan ready for the engine oil to drain into.
Remove the bolt attaching the remote engine oil filter lines (engine mounted) adapter to drain the engine oil.
Hold the remote engine oil filter lines below the remote engine oil filter lines (engine mounted) adapter to drain the engine oil.
Remove and discard the seals.

Fig 5: Removing Engine Oil Cooler Lines
Courtesy of GENERAL MOTORS CORP.
Remove the bolt attaching the remote engine oil filter lines to the remote engine oil filter lines (engine mounted) adapter.
Remove and discard the seals.
Clean all of the components in a suitable solvent, and dry them with compressed air.
Inspect the fittings, the connectors, the cooler lines, the cooler, the filter lines, and the remote filter adapter for damage, distortion, or restriction. Replace parts as necessary.
Flush the engine oil cooler, the engine oil cooler lines, the remote engine oil filter adapter, and the remote engine oil filter lines with the same type of engine oil normally circulating through the engine.