GMC 10465054 Starter (Remanufacture)

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To determine if the starting system is functioning, you should first investigate the cleanliness and firmness of battery cable clamps, check out the state of battery cables, determine if the battery is in good condition, inspect connections as well as wiring for the starter motor, confirm tightness of starter motor mounting bolts, test each fuse found at engine compartment fuse box, inspect ignition switch circuit, examine starter relay among other things and ensure that clutch start switch or Park/Neutral position switch are in their right operational conditions. For this reason try to verify whether voltage is arriving at the starter by attaching a voltmeter or a test light to purple wire through solenoid while turning key to start position. So if your starter moves slowly, then check how much cranking voltage it takes from a battery while on an engine. In addition to having clean terminals and cables with good cold-cranking rating for that purpose; your battery must be in excellent condition too. Before testing your battery and engine block in cases of extremely cold weather conditions heat them up first. If there's power reaching it but not being used remove the motor assembly from its bench and test it. You can tell whether there are any defects within this part by checking what happens when solenoid plunger shifts lever overrunning clutch for proper operation are activated. Some starters may work when we connect them electrically to pinion drive but they fail to rotate that means such motors need replacement because solenoid have electricity so it is fine; otherwise these starters will be unplugged completely since no movement will occur when solenoid clicks mean either one might be malfunctioning while another has failed completely. With this in mind; you can conclude that once you pull out plunger which extends rotates pinion drive starting system functions appropriately.

Label and disconnect the wires from the terminals on the starter motor and solenoid.

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.

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 starter motor shield.

During the installation of the starter motor for 4.3L V6 (2018 and later), 4.8L, 5.3L, and 6.0L V8 engines, you should proceed with the installation in reverse order, ensuring that the starter motor mounting bolts are tightened to the specified torque.