Kennyray

Thanks i appreciate the info on the 99 gmc.

Could be both or one of the 2, if possible try to have it scanned for codes

Hi! kennyray this is redneckgrandpaw, You seen the post i put on about my 99 gmc starting and stopping @ about 1000 rpm all with in about a 1/2 second like you just turned the key back off and when it does start it will run for 3 or 4 days before it acts up again. Would this be in the fuel system or maybe the P.A.S.S lock system?

do you think there is any other thing you can think of?
and what wouldthat run me as in price?
and do you have to take the whole aternator apart?