Starter Solenoid: Service and Repair

Starter Solenoid Switch Replacement (Diesel)

Removal Procedure




1. Remove the starter motor. Refer to Starter Replacement (V8) (Service and Repair)Starter Replacement (V6) (Service and Repair)Starter Replacement (Diesel) (Service and Repair).
2. Reposition the M-terminal stud weather cover (1).
3. Clean the epoxy coating (2) from the M-terminal stud.




4. Loosen the M-terminal stud nut.
5. Remove the cable from the M-terminal stud.




6. Remove the solenoid bolts (1).




7. Separate the solenoid from the housing and unhook the solenoid plunger (2) from the drive gear lever (1).




8. Note that the spring (3) is positioned against the drive gear lever (1) and the drive gear lever is placed inside the solenoid plunger loop (2).




9. Remove the solenoid housing.




10. If necessary, remove the solenoid plunger and spring.

Installation Procedure




1. If necessary, install the solenoid plunger and spring.




2. Using Three Bond silicone 1207B, GM P/N 97720043, seal the starter solenoid attachment area.





Note: Ensure that the drive gear lever (1) is properly installed into the solenoid plunger (2) loop. Improper installation of the drive gear lever will cause an abnormal or no operation condition of the starter.

3. Install the solenoid, making sure to insert the drive gear lever (1) into the solenoid plunger (2) loop, perform the following:

1. Pull the gear lever (1) out away from the starter housing and pull the plunger (2) out away from the solenoid.
2. Tip the solenoid and insert the lever into the loop, push the solenoid against the housing.





Caution: Refer to Fastener Caution (Fastener Caution).

4. Install the solenoid bolts (1).

Tighten the bolts to 10 Nm (89 lb in).

5. Wipe the excess silicone pressed out during the solenoid installation from around the base of the solenoid to make a weather proof seal.




6. Install the cable to the M-terminal stud between the washers and terminal nut.
7. Tighten the M-terminal stud nut.

Tighten the nut to 8 Nm (71 lb in).




8. Using Three Bond silicone 1207B, GM P/N 97720043, seal the M-terminal stud connection (2).
9. Reposition the M-terminal stud weather cover (1).
10. Bench test the starter in a free-run condition prior to installation.
11. Install the starter motor. Refer to Starter Replacement (V8) (Service and Repair)Starter Replacement (V6) (Service and Repair)Starter Replacement (Diesel) (Service and Repair).