Removal Procedure

The optional oil cooler is either an integral part of the radiator or a separate unit placed in front of the radiator. The cooler lines and hoses are serviceable.

1. Disconnect the engine oil cooler quick connect fittings. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .
2. If equipped with a 5.3L, or 6.0L engine, perform the following:
   1. Open the oil cooler hose clip located on the lower fan shroud.
   2. Remove the oil cooler hoses from the clip.
   3. Gently pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
Fig 1: View Of Engine Oil Cooler Quick Connect Fittings (5.3L & 6.0L)
Courtesy of GENERAL MOTORS CORP.
3. If equipped with a 8.1L engine, remove the oil cooler hoses from the clip
Fig 2: View Of Oil Cooler Hoses
Courtesy of GENERAL MOTORS CORP.
4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
5. If equipped, remove the engine shield bolts.
6. Remove the engine shield.
Fig 3: View Of Engine Protection Shield
Courtesy of GENERAL MOTORS CORP.
7. If equipped with a 5.3L, or 6.0L engine, perform the following:
   1. Remove the oil cooler hose bracket bolt (1).
   2. Remove the oil cooler hose adapter bolts (2).
   3. Remove the oil cooler hose assembly and gasket. Discard the gasket.
   4. Inspect the fittings, connectors and cooler hoses for damage or distortion.
Fig 4: View Of Oil Cooler Hose Bracket Bolt & Adapter Bolts
Courtesy of GENERAL MOTORS CORP.
8. If equipped with a 8.1L engine, perform the following:
   1. Remove the oil cooler hose bracket bolt.
   2. Disconnect the quick connect fittings (1) at the engine.
   3. Remove the oil cooler hose assembly. Discard the gasket.
   4. Inspect the fittings, connectors and cooler hoses for damage or distortion.
Fig 5: View Of Oil Cooler Hose Quick Connect Fittings (8.1L)
Courtesy of GENERAL MOTORS CORP.