Thread: 2005 Grand Prix Positive Cable Problem

My son's '05 GP has been having trouble starting. At first, I thought it was the battery connector, but we replaced it and the car ran fine for about a week. Then, it wouldn't start again. After multiple times of getting the car to start after seemingly random wire jiggling, I have narrowed the culprit down to the Positive Battery Cable that runs down to the lower part of the engine. When I move it (specifically the black wire on the left in the photo attached), the car starts fine. This stays in place for a random time and then obviously comes loose, shorts out, or whatever.

Since I have a VERY rudimentary understanding of things mechanical, I am wondering what would it take to fix this? Is this something easily done on my own or will it require a visit to the shop?

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Disconnect the cable at the battery first, then follow the positive battery cable down to the starter where it is attached to the stud on the starter, it is held on with a nut that is either 15mm or 9/16, tighten that nut, but do not over tighten as the stud will begin to turn inside the starter solenoid. Should be good after that.

Thanks for both replies! I'll take a look and move forward from there.