Cadillac 89017844 Starter,(Remanufacture)

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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.

First of all, you need to disconnect the starter motor cable from the negative battery terminal; then on V8 models you will have to loosen the right front wheel lug nuts and raise the front part of your car using jackstands. For V6 models remove oil pan skid plate in case it is equipped and on V8 models as well remove right front wheel well splash shield. Remove if applicable a starter motor heat shield respectively and separate starter control cable and battery cable from starter motor solenoid terminals. On V8 models take off transmission cover, finally unscrew the mounting bolts of a starting engine. To install a new starter, just reverse the order of these steps ensuring that bolts are tightened according to specifications for torque.

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.

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

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.

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.

During bench testing:If the pinion drive extends but doesn't rotate, the solenoid is operational but the starter motor is faulty.If there is no movement despite the solenoid click, both the solenoid or starter motor may be defective.If the solenoid plunger extends and rotates the pinion drive, the starter assembly is functioning correctly.

If the starter motor does not operate, the following steps should be taken: 1. Check for battery voltage to the solenoid. 2. Test the starting system circuit.

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.

Loosen the wheel lug nuts for the right front wheel and raise the front of the vehicle on jackstands.

Disconnect the battery cable and starter control cable from the starter motor solenoid terminals.

Installation is the reverse of removal.

Before assuming the starter is the problem, it is important to check the following items: 1. Clean and tight battery cable clamps where they connect to the battery. 2. Condition of the battery cables. 3. Battery's condition. 4. Starter solenoid wiring and connections. 5. Starter mounting bolts for tightness. 6. Ensure the shift lever is in PARK or NEUTRAL.

Remove the oil pan skid plate, if equipped.