Question about 1998 GMC Sierra
If you are sure the battery is good (6 months old doesnt matter, it may in fact be bad, ESPECIALLY if its a delco or duralast or some other low quality line) and the car slow cranks and then must sit before attempting again, you almost certainly have high resistance somewhere. Usually on GMs its bad sidepost bolts, or bad battery cables (under the insulation white corrosion and crude rot and infect the copper causing resistance) clean and tighten all cables. Starter may also have internal resistance that is the beginning of a total failure. CHECK BATTERY 1ST THOUGH! 90% of slow cranking problems are bad batteries, or starters thatwere damaged by being cranked too long and often with a bad battery (Yes, thats very bad for the starter!)
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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