I have a 1991 gmc 2500. It eats gas somethin awfull. I changed the spark plugs, and it passed smog, now it idles a little rough, and still eats gas. What do i do...

I have a 1991 gmc 2500. It eats gas somethin awfull. I changed the spark plugs, and it passed smog, now it idles a little rough, and still eats gas. What do i do... 1 Answer

It starts fine, if I stay with it, negotiate the gas pedal for a few seconds it wil usually keep idling smoothly. Until I put it into gear? 3 Answers

(1995 GMC Sierra 2500 Pickup, 305 V8, Automatic Transmission, rear wheel drive, 85,000 miles) Once in gear it will normally require me lightly pumping the gas to keep from dying. Too much gas and it...

My 97 2500 gmc with a 350 in it the feul pump went bad I changed it and the truck fires but won't start help please 4 Answers

I tried to bleed the system but that did not help I am getting spark but I don't think the fuel is getting enough pressure

I have a 1989 GMC Sierra 2500. within the past few weeks, my heater has started blowing cold air. But, it doesn't constantly blow cold air. It goes back and forth between hot and cold. Does this mean my heater core is bad, or may it be another problem? 3 Answers

I have a 1989 GMC Sierra 2500. within the past few weeks, my heater has started blowing cold air. But, it doesn't constantly blow cold air. It goes back and forth between hot and cold. Does this mean ...

Hello I Have a 89 GMC 2500 and it hesitates when you start moving but once you get past the intial start it runs fine. You can hear it miss when its idling also. Anyone know what causes this? 3 Answers

The following has been replaced: Spark plugs and wires, Distributor cap and rotor, oil pressure gauge switch, fuel filter, and inspected ignition cables