GM 10465065 Starter,(Remanufacture)

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To disconnect the cable from the negative battery terminal, first disable the anti-theft feature if your model has a Delco Loe II audio system. Then, raise the vehicle and secure it on jackstands. Remove the brackets supporting the starter and the two starter motor to engine bolts. Allow the starter to drop down enough to remove the nuts attaching the wires to the starter solenoid and battery cable, supporting the starter while removing the wires. Separate the starter from the engine and reinstall any removed shims during the installation process.

If the clearance is less than 0.02 inch and the starter whines, shims can be added to increase the clearance. If the clearance is greater than 0.06 inches and the starter whines, shims can be removed to reduce the clearance.

If the starter motor does not operate at all but the solenoid clicks, the problem could be with either the battery, the main solenoid contacts, or the starter motor itself. Before diagnosing starter problems, make sure that the battery is fully charged.

The battery cable clamps for cleanliness and tightness, the battery cables, the battery's condition, the starter motor wiring and connections, the starter motor mounting bolts, the fuses in the engine compartment fuse box, the ignition switch circuit, the starter relay, and the clutch start switch (manual transmission) or the Park/Neutral position switch (automatic transmission).

Remove the mounting bolts and detach the starter.

If voltage is present at the starter solenoid's positive terminal but the starter motor remains inactive, you should remove the starter for bench testing.

For 4.3L V6 (2014 and earlier), 5.0L, 5.7L, and 7.4L V8 engines, the steps to remove the starter motor include:Removing the solenoid heat shield from the solenoid.Disconnecting the electrical leads from the solenoid terminals.Removing the nuts securing the battery cable and switch lead to the stud terminals on the starter solenoid and disconnecting both wires from the terminals.Removing the starter motor mounting bolts and shims (if equipped), while supporting the starter to prevent it from hanging by the wiring harness.

Remove and bench-test the starter motor assembly. Check the solenoid plunger, shift lever, and overrunning clutch for proper operation to identify any defects in the starter motor or solenoid. If the pinion drive extends but doesn't rotate, the solenoid is operational but the starter motor is defective. If there's no movement and the solenoid clicks, either the solenoid or starter motor is defective. If the solenoid plunger extends and rotates the pinion drive, the starter assembly is operating correctly.

If the starter motor cranks the engine at a slow speed, ensure that the battery is charged and all terminal connections are clean and tight. Additionally, check if the engine is partially seized or has the wrong viscosity oil, as these factors can also cause slow cranking.

Remove the mounting bolts and detach the starter.

The steps for removing the starter in a 2WD vehicle are as follows: Disconnect the negative battery cable. Raise the front of the vehicle and support it securely on jack stands. On V6 models, remove the right front wheel for easier access. Remove the front exhaust pipe from the exhaust manifold. On 2.2L engines, take off the brace rod from the front of the engine to the bell housing. On certain models through 1999, remove the support bracket connecting the front of the starter to the block. If equipped, remove the starter heat shield. From underneath the vehicle, disconnect the solenoid wire and battery cable from the terminals on the solenoid. Remove the starter mounting bolts. Take out the starter motor, noting the location of any spacer shim(s), if present.

If the solenoid clicks but the starter motor does not operate, the issue may lie with the battery, main solenoid contacts, or the starter motor itself.

To adjust the shim for the starter, follow these steps: Remove the flywheel housing cover and inspect the flywheel or drive plate for signs of unusual wear. Measure the clearance between the top of the flywheel ring gear tooth and the bottom of the pinion tooth on the starter using a wire-type feeler gauge (round diameter). Normal clearance should be 0.01 to 0.06 inches. If the starter clearance is less than 0.02 inches and the starter whines after engagement, add a 0.04 shim to gain clearance (avoid using more than two shims). If the starter clearance is more than 0.06 inches and the starter whines during engagement, remove a 0.04 shim to gain clearance (avoid removing more than two shims). To install a shim, loosen the inside bolt, remove the outer bolt, and slide the shim between the engine and the starter without removing the starter from the engine block.

The problem is in the main solenoid contacts or the starter motor itself.