Hummer 19180529 Starter Asm,(Remanufacture)(Pg260D)

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When troubleshooting a starting circuit malfunction, check battery cable clamps, cables, battery condition, starter solenoid wiring, connections, and mounting bolts. Also, ensure shift lever is in PARK or NEUTRAL. If starter doesn't operate when ignition is turned to START, check for battery voltage to solenoid and test starting system circuit. If starter turns over slowly, check cranking voltage and current drawn from battery. If values are incorrect, replace starter. If starter receives voltage but doesn't activate, remove and check starter/solenoid assembly on bench, ensuring engine isn't seized. If solenoid plunger extends and rotates pinion drive, assembly is working properly.

But don't just assume that the starter is guilty right away if you are troubleshooting a malfunction in the starting circuit. Instead, begin by inspecting several key components like; clean and securely connected battery cable clamps to battery. Check battery cables for damage and replace any damaged ones. If it fails any tests, evaluate its condition and change it. Inspect starter wiring and connections, and also check the tightness of starter mounting bolts. Examine relevant fuses in engine compartment fuse box, if they're blown, investigate the cause and repair the circuit. Evaluate the ignition switch circuit for correct operation. Verify that the underhood electrical center contains a properly functioning starter relay. Ensure this as well as Park/Neutral position switch functions correctly since these systems are important for applying battery voltage to the starter relay respectively at least during cranking. If no engagement occurs when turning the ignition switch to start then check for battery voltage at the starter solenoid. Attach a 12-volt test light or voltmeter to the starter solenoid terminal and have an assistant turn the ignition switch to start while monitoring the test light or voltmeter. It should burn brightly or show battery voltage there. Absence of voltage indicates checking fuses, ignition switch, starter relay and related wiring in starting system. If voltage is present but starter does not turn over remove starter from engine and bench test it for defects. Slow turning requires checking of cranking voltage at starter using volt meter from battery which should not drop below 8 volts with amperage draw not exceeding 350 amps over a 10-second crank period; anything above that can result in a failure of some elements associated with starting system requiring testing within service department. Finally, if nothing happens when power is applied to a particular device (in our case, the starter) but it is believed to be energized, this means that there are two possible problems with the solenoid or starter. Inspect whether the engine is seized by attempting to rotate the crankshaft pulley. If necessary, apply voltage to a bench mounted starter solenoid using a test battery and observe its operation including the pinion drive extending and rotating. From these observations decide whether the solenoid or starter is bad and if not, what may be wrong within the starter assembly.

Remove the starter motor mounting bolts and remove the starter motor.

Disconnect the cable from the negative battery terminal.

The initial steps for removing and replacing a starter motor include:Disconnecting the cable from the negative terminal of the battery.Raising the vehicle and securing it on jackstands.

When dealing with slow starter cranking, especially in extreme cold conditions, consider ensuring the battery meets the application's requirements, having clean and corrosion-free battery terminals and cables, and warming the battery and engine block if necessary.

Remove the cover from the right front of the transmission.

If the starter fails to engage when the ignition switch is turned to start, you should confirm the presence of battery voltage at the starter solenoid. Attach a 12-volt test light or voltmeter to the starter solenoid terminal and have an assistant turn the ignition switch to start while monitoring the test light or voltmeter.

If the starter turns over slowly, the following steps should be taken: 1. Check the starter cranking voltage. 2. Check the current drawn from the battery. 3. If the starter cranking amp values are not within the correct range, replace the starter with a new unit.

If the starter turns over slowly, the following steps should be taken: 1. Check the starter cranking voltage. 2. Check the current drawn from the battery. 3. If the starter cranking amp values are not within the correct range, replace the starter with a new unit.

Remove the right front wheel well splash shield.

Remove the starter motor heat shield, if equipped.

Remove the starter motor mounting bolts and remove the starter motor.

Simply reverse the removal steps and be sure to tighten the mounting bolts to the torque specifications.

Installation is the reverse of removal.

If the starter turns over slowly, the following steps should be taken: 1. Check the starter cranking voltage. 2. Check the current drawn from the battery. 3. If the starter cranking amp values are not within the correct range, replace the starter with a new unit.

In the engine compartment fuse box, you should:Check the related fuses and address blown fuses accordingly.

If the starter is receiving voltage but does not activate, the following steps should be taken: 1. Remove and check the starter/solenoid assembly on the bench. 2. Ensure that the engine is not seized. 3. If the solenoid plunger extends and rotates the pinion drive, the starter/solenoid assembly is working properly.

Remove the oil pan skid plate, if equipped.