OEM GMC Sierra 3500 Starter Solenoid

GMC Sierra 3500 Starter Solenoid Parts and Q&A

• Solenoid
  97779441
  Q: How to replace the Starter Solenoid on GMC Sierra 3500?

  A:

  For changing the Starter motor solenoid, first, take out the Starter motor and reposition the m-terminal stud weather cover. Clean the epoxy coating off the m-terminal stud after which loosen the m-terminal stud nut and pull the cable out of the m-terminal stud. Then, disconnect the solenoid bolts, separate the solenoid from the housing, and unhook the solenoid plunger from the drive gear lever. It is to be observed that the spring is situating against the drive gear lever and that the drive gear lever is sitting in the solenoid plunger loop. Get rid of the solenoid housing, if necessary the solenoid plunger and spring. For installation, optionally, if required, install solenoidal plunger and spring and three bond silicone 1207b, gm p/n 97720043, to secure a Starter Solenoid attachment area. Mount the solenoid in a manner that the drive gear lever is inserted into the solenoid plunger, loop by pulling the gear lever and the plunger toward itself while tipping the solenoid, to align the lever with the loop then pushing the solenoid towards the house. Make sure that the drive gear lever is properly inserted into the solenoid plunger loop so as to prevent abnormal or no functioning of the Starter. Install the solenoid pump pulsation bolts and torque them to approximately 10 Nm (89 lb in). Remove spill over silicone round solenoid base for weather seal then fit cable to the m-terminal stud between washers and the terminal nut tightening the m-terminal stud nut to 8 Nm (71 lb in). Seal the m-terminal stud connection using three bond silicone 1207b gm p/n 97720043 and replace the m-terminal stud weather cover. Perform pre-installation bench tests; carry out the Starter in the free-run situation, and install the Starter motor.