Starter Motor: Service and Repair

Fig. 2 Starter Motor Replacement. 5.7L 4 Cam 32 Valve (ZR-1) Engine:

If shims are used between starter and engine block, they should be placed in their original location during installation. If starter is noisy during cranking, remove one .015 inch double shim or add one .015 single shim to the outer bolt. If starter makes a high pitched whine after firing, add .015 inch double shims until noise ceases.
1. Disconnect battery ground cable, then drain cooling system.
2. Remove intake plenum assembly. ENGINE MECHANICAL/COMPONENT REPLACEMENT & REPAIR PROCEDURE/PLENUM ASSEMBLY procedure.
3. Remove ignition coil pack.
4. Disconnect battery positive cable and electrical leads from starter motor.
5. Remove starter motor to engine block attaching bolts, then remove starter motor, Fig. 2.
6. Reverse procedure to install. Prior to installation, coat threads of starter mounting bolts with Loctite 262 or equivalent. Torque starter mounting bolts to 38 ft. lbs.