Suburban 3/4 Ton 4WD V8-6.0L VIN U (2004)
Oil Cooler: Service and Repair
Engine Oil Cooler Pipe/Hose Quick Connect Fitting
Engine Oil Cooler Pipe/Hose Quick Connect Fitting
Removal Procedure
1. Disengage the plastic caps from the quick connect fittings. Pull the caps back along the pipe.
2. 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.
3. 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.
4. Remove the engine oil cooler line from the quick connector fitting at the radiator.
Pull the lines straight out from the connectors.
5. Clean all of the components in a suitable solvent, and dry them with compressed air.
6. Inspect the fittings, the connectors, the cooler lines, and the cooler for damage, distortion, or restriction. Replace parts as necessary.
Installation Procedure