Upon removal of starter, note if any shims are used. If shims are used, they should be reinstalled in their original location during replacement. If starter is noisy during cranking, remove one.015 inch double shim or add one.015 inch single shim to the outer bolt. If starter makes a high pitched whine after firing, add.015 inch double shims until noise ceases.
Disconnect battery ground cable.
Raise and support front of vehicle.
Remove any shields or braces blocking access to the starter, on 4.3L/V6-262 raise vehicle half way to gain access to starter.
On 4-wheel drive vehicles, remove skid plate if equipped.
Remove bolts and brackets holding brake line to crossmember.
On all models, remove starter mounting bolts, then allow starter to drop down.
Remove solenoid wiring and battery cable, then the starter assembly.
Reverse procedure to install.