Posted on Sep 08, 2009

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My 1995 gmc truck has a weak starting crank - 1995 GMC Sierra C1500

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Anonymous

GMC Master 6,982 Answers
Posted on Sep 08, 2009

Anonymous

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Check actual battery voltage...should be at least 12v after sitting overnight.
Have battery load tested. Volts should not drop below 9.5 at a 200 amp load and should return to 12v immediately after removing load. If battery proves good after that specific testing, put a volt meter on battery and watch volts when you attempt to start it. If voltage drops to 9.5 or below the starter is worn out and needs replacement. Also check running voltage...should be 13.5 but no higher than 14 running and with all accessories on should not drop below 12.5. or continue dropping. If it does, your alternator is bad.

Anonymous

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Posted on Sep 08, 2009

Anonymous

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Could be the wrong battery check the craniking amps to see if u got the right battery sometimes these auto parts stores give the wrong item also make sure your cables are clean when clean pour some coca cola on them so they dont corode

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