Truck wont start. Should I put more shims or what?


Asked by Aug 24, 2017 at 02:26 PM about the 1991 GMC Sierra 1500

Question type: Maintenance & Repair

Replaced the starter and it worked fine for a day but now it makes a grinding sound and wont turn over. It also has a few shims on it already.

6 Answers


Is battery weak?


make sure the batt. terminals are clean and tight as well as any other electric connections and were the starter grounds to the motor , , what ever shims came off should go back on ,

1 of 1 people found this helpful.

No its a new battery. The shims that came off went right back on and its still doing it. It will work a couple of times then right back to not starting.


Sounds like wiring, solenoid or relay is weak. Check connections like other user suggested. On the relay you have to check resistance also not just "clicking"


Did bad alternator make your battery weak? Test alternator output.


some rebuilds are junk out of the box , try to buy quality parts , it's not always practical though

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