Cars
Problem for GMC Cars
Generic problem for all GMC C1500 Cars

Truck is hard to start.




By alfrtime on Oct 03, 2008

" "
truck is hard to start. once started, if you try to accelerate, it acts like the throttle body is vapor locking and then clears up to full power. will act like it is missing as you drive it and you try to accelerate. Fuel pressure is between 55 & 60 lbs. Drops to 52 lbs. when running.

Same Problem

Jan 11, 2009

-   gmc yukon will not start, but acts as though it's going to turn over/ it's not the battery. Any ideas? -   Guest

Jan 02, 2009

-   truck is having trouble starting. rpm's go up and down when idling. put truck in gear and it stalls. can someone tell me where the o2 sensor and IAT sensors are. this just started all of a sudden a few days ago. Thanks!!-   truckdummy

Best Solution

posted on Oct 03, 2008
Helpful)

breakthisone

Rank: Master 
Rating: 80%, 10 votes
check for o2sensor malfunction or IAT sensor malfunction
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