GM 10465577 Starter (Remanufacture)

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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 spins but the engine is not cranking, it means that the overrunning clutch in the starter motor is slipping. In this case, the motor must be removed from the engine for replacement.

If the starter motor spins but the engine does not crank, the overrunning clutch in the starter motor may be slipping, and you'll need to replace the motor.

Start 2WD Starter removal by disconnecting the negative battery cable, and then raise the front of the vehicle, supporting it securely on jack stands. In some V6 models, you might have to remove the right front wheel for accessibility purpose. The next step is removing the front exhaust pipe from the exhaust manifold. Remove brace rod from in front of engine to bell housing on 2.2L engines; alternatively remove support bracket that goes from starter front to block on some models prior to 1999 if equipped. If your vehicle has a starter heat shield, take it off now.Unbolt solenoid wire and battery cable ends at solenoid (underneath vehicle), then finally undo starter mounting bolts and remove unit. Consideration also should be given to whether there are any spacer shims fitted between motor body and attaching point.Eliminate starter motor noting spacers present, if any are there.To reinstall proceed knowing original positions of necessary shim(s).Now for 4WD Starter removal start by disconnecting the negative battery cable lift up jack stands under secure jack stands at the center of vehicle's rear axle assembly after raising its front end wheels off ground; thus enabling easier access.Remove left wheel (on 2.2L models) or right wheel (on 4.3L V6); this action is intended to make it easy for you when pulling out the component.Once again on two-point-two liter engines just slide off driveshaft towards its back.In certain early versions it may be necessary to raise engine/transmission using a transmission jack under transmission while removing transmission cross member for access to address simple bolts holding starter motor.However if provided with one, get rid of heat shield for starter wiring harness leading directly into solenoid switch.Insert wires coming from down under vehicle into terminals located on top of solenoid but still stay below nuts tightened against post threads.Slide out starter motor watching for shims or spacers if any are present.Install in reverse order of removal, making sure it is re-positioned in its original position and the shim is inserted between the engine block and the starter without removing.Correcting shimming remove the bell housing cover. At this stage, inspect flywheel or drive plate for abnormally worn areas, etc.Take a feeler gauge of round diameter with wire type leaves and determine distance from top of flywheel gear tooth to bottom of pinion tooth in starter from inside (not teeth tips) where clearance should be 0.01 to 0.06 inches.A starter whine usually indicates low clearance caused by too tight shimming.Worn pinion bearings also cause a whine during cranking.Loosen inner bolt slightly; then remove outer one before slipping spacer adjustment through narrow opening made outside engine block which separates it against crankshaft.So you see that installation removes only one additional spacer while retaining rest of them when applying because there was no need to separate motor upon lowering vehicle's entire weight down on its front wheels.

Perform the following checks and inspections when troubleshooting a starting circuit issue:Ensure the battery cable clamps are clean and securely fastened at the battery terminals.Assess the condition of the battery cables and replace any damaged ones.Test the battery's condition and replace it with a new battery if it fails any tests.Examine the wiring and connections associated with the starter motor.Check the tightness of the starter motor mounting bolts.Inspect the relevant fuses in the engine compartment fuse box and replace any blown fuses.

To install the new starter motor assembly, you should perform the installation in reverse order, ensuring that the starter mounting bolts are tightened to the specified torque.

First, check that the shift lever is in Neutral or Park (for automatic transmission) or that the clutch pedal is depressed (for manual transmission). Then, ensure that the battery is charged and that all cables are securely connected at the battery and starter solenoid terminals.

The steps for removing the starter in a 4WD vehicle are as follows: Disconnect the negative battery cable. Raise the front of the vehicle and support it securely on jack stands. Removing the wheel (left wheel on 2.2L models, right wheel on 4.3L V6 models) may facilitate better access. Remove the skid plate. On 2.2L models, take off the front driveshaft. In some early models, you may need to raise the engine/transmission with a floor jack under the transmission and remove the transmission cross member for access to the starter motor bolts. 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 starter motor does not turn when the switch is operated, first check the shift lever (for automatic transmission) or clutch pedal (for manual transmission). Ensure the battery is charged and all cables are securely connected. If the motor spins but the engine does not crank, the starter motor may need to be replaced. If the solenoid clicks but the motor does not operate, the issue may be with the battery, solenoid contacts, or starter motor. If the solenoid plunger cannot be heard, it may be defective or there may be an open circuit. To check the solenoid, connect a jumper lead between the battery and "S" terminal. If the motor operates, the solenoid is fine. If not, remove the starter/solenoid assembly for testing and repair. If the motor cranks slowly, check the battery and terminal connections. If the engine is partially seized or has the wrong oil, it may crank slowly. To diagnose further, run the engine until normal temperature, then stop and disconnect the coil wire. Connect a voltmeter to the starter motor terminal and ground. Crank the engine and take voltmeter readings. A reading of 9 volts or more at normal cranking speed is normal. If the reading is less than 9 volts and the cranking speed is slow, the solenoid contacts may be burned.

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.

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.

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.