Questions & Answers for: GMC Sierra 1500 rough start

...problem over and over. The check engine light comes on and eventually the truck starts running very rough. I have taken the truck to a pair of different shops now with the same "symptoms". ...

rough and then wouldnt start later on that day, has brand new battery plugs and cables, fuses are all good, fuel pump is working, all cables and switches connected, no shorts in electrical, fluids all

...start. When it idles it runs very rough like miss fire and exhaust smells like unburnt fuel or possible rich mixture? I also noticed fuel runs out vacumn line when unhooked from fuel pressure ...

2000 gmc starts but then idles rough then dies 2000 gmc sierra starts but then idles rough then dies. i belive the fuel pump is still working but yet i cant here it. I had to replace the mass air flow

...rough and coughing sputtering just before it started doing this I stopped and put gas in at a place that I had'nt bought gas at before. This could be related or non-related. Not long after this it ...

starts running really rough when warmed up, then will not restart. 5.7 tbi I would try changing the temp sensor on or near the thermostat housing.

...start running rough. I changed the spark plugs, checked the coil packs and replaced the fuel pumpand fuel filter. Still no change....Any suggestions? ROUGH IDLING CAN BE CAUSE BY MANY THINGS.I AM ...

when do you change plugs on 2007 gmc sierra well when they look bad or when truck starts running rough or missing out a basic tuneup

check engine light came on, starts up fine, idles rough then if i give it gas and come to a stop it wants to die Had it checked they said it was a gas cap we bought a new gas cap. changed the spark ...

When the maf sensor is unpluged the truck will start up great but if plugged in will idle rough when cold starting and want to stall. MAF sensors get dirty and wear out. Replace it.