'99 Silverado hacks and coughs but doesn't want to start after it sits overnight.

Asked by Jun 22, 2017 at 01:17 PM about the 1999 Chevrolet Silverado 1500 3 Dr STD Extended Cab LB

Question type: Maintenance & Repair

'99 Silverado won't crank after it sits overnight.  Battery fine.  It just hrumm, hrumms over and over until it coughs and sputters as I turn key off.  If I try right again, it might start.  If I leave it an hour and come back, it will do same thing but start that time.  Worse when it rains.  Today, it did its thing and then belched loudly and no more attempts at starting, just hrumm hrumm until battery is getting weak now.  What do I need to fix?

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