I have an 04 GMC Envoy 6 cylinder 4.2. The service engine soon light came on this morning and was running a little rough. We ran around a little bit before stopping at Auto Zone, they hooked up there tester and said you have a misfire in cylinder 4. They said it could be spark plugs or maybe a clogged injector. I bought some spark plugs and went home. I shut the car off and restarted a couple of hours later and the service engine light did not come back on and it seemed to run fine. Any ideas?

I have an 04 GMC Envoy 6 cylinder 4.2. The service engine soon light came on this morning and was running a little rough. We ran around a little bit before stopping at Auto Zone, they hooked up there tester and said you have a misfire in cylinder 4. They said it could be spark plugs or maybe a clogged injector. I bought some spark plugs and went home. I shut the car off and restarted a couple of hours later and the service engine light did not come back on and it seemed to run fine. Any ideas? 5 Answers

i have 2002 gmc envoy , when ever I speed up (around 70) the service engine light comes up and then goes off. But today my car stopped and said stop engine. I waited for 5 mins and then tried restarting. Car was ok and no service engine light came up. after that again i see service engine light (solid one) . HOw can i solve this ? 5 Answers

i have 2002 gmc envoy , when ever I speed up (around 70) the service engine light comes up and then goes off. But today my car stopped and said stop engine. I waited for 5 mins and then tried restar...

i. i replaced the head ligts complete set and the switch at the seem time. on a 2003 gmc envoy . my problem is that i don't have running lits . only hi beam. what can b e the problem. 1 Answer

I. i have a 2003 gmc envoy xl. i replaced both ligts sets and a switch at the same time. the probles is. i don't have running ligts. only hig beams. they use to come on automatically. now i don't ha...

Please help I feel like I'm being lied to and taken advantage of-Bought a used SUV the speedometer doesn't work dealer fixed the mileage went from 160000 to 212000 yet the dealer claims no only160000 1 Answer

I just recently bought a 2003 GMC Envoy 4 wheel drive SUV with 160,545 miles on the dash from a private dealer in Massachusetts. Minutes after owning the SUV I learned that the speedometer and t...

How do I remove the whole steering colum on a 2003 GMC envoy. 1 Answer

I'm taking out the steering colum on a 03 envoy and putting it in an 02 envoy