1. Disconnect negative cables. Drain cooling system. See COOLING SYSTEM BLEEDING under REMOVAL & INSTALLATION. Raise and support vehicle.
2. Disconnect exhaust pipe at turbocharger for access to oil cooler if necessary. Remove oil cooler front header-to- cylinder block bolts. See Fig. 141. Drain engine oil into a suitable drain pan and remove oil filter.
3. Disconnect retainer and cable from cylinder block heater. See Fig. 33. Cylinder block heater is located on driver- side rear corner of cylinder block, just below exhaust manifold, near oil filter.
4. Remove oil cooler rear header-to-cylinder block bolts. See Fig. 142. Remove oil cooler assembly and gaskets.
