1999 GMC 1500 Pickup Q&A

1999 GMC 1500 Pickup Question: irregular starting

2000 1500 sierra will sometimes start on the first crank, but most often on the 2nd or 3rd. im thinking plugs or distributor cap. what do you think -
Answer 1
it is best to inspect these items. You may have a check valve that has gone bad, in your fuel pump, which is very common on your vehicle. So, start by looking at your tune-up stuff and then go from there. Does your truck take 2-3 tries all the time or only in the morning? -
Comment 1
until this week it would go 2 to 3 days on first crank but this week it has been 3 tries every time -