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?

Mark Olson
0

Asked by Mark Jun 08, 2014 at 07:09 PM about the 2004 GMC Envoy XL SLT 4WD

Question type: Maintenance & Repair

2 Answers

dandyoun
78,245

Could have been some water in your gas if you did not change anything. But most times it's the plugs or plug wires(boots)or coils that cause this code.

1 out of 1 people think this is helpful.
Js08016
35,205

If you have over 100,000 miles on it you're due for a tune up. Change the spark plugs and wires (or boots on coil overs). If it's never been tuned up yet you could have a spark plug or wire (boot) that's beginning to fail. HTH. -Jim

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Search GMC Envoy XL Questions

GMC Envoy XL Experts

#1 mhgcards
mhgcards
Reputation 100
#2 John Leone
John Leone
Reputation 90
#3 skinnyginnie
skinnyginnie
Reputation 60
View All

Related Models For Sale

Used GMC Envoy"
89 Great Deals out of 2,131 listings starting at $2,000
Used Ford Explorer"
679 Great Deals out of 36,773 listings starting at $987
Used Chevrolet Tahoe"
418 Great Deals out of 28,877 listings starting at $2,495
Used GMC Yukon XL"
118 Great Deals out of 5,842 listings starting at $2,990
Used GMC Envoy XUV"
9 Great Deals out of 153 listings starting at $2,450
Used Chevrolet TrailBlazer"
219 Great Deals out of 5,038 listings starting at $995
Used Chevrolet TrailBlazer EXT"
49 Great Deals out of 1,211 listings starting at $1,095
Used GMC Yukon"
207 Great Deals out of 8,192 listings starting at $2,550
Used Honda Pilot"
226 Great Deals out of 12,016 listings starting at $2,495
Used Chevrolet Suburban"
233 Great Deals out of 17,062 listings starting at $1,995
Used Jeep Grand Cherokee"
839 Great Deals out of 59,493 listings starting at $1,200
Used Ford Expedition"
350 Great Deals out of 15,651 listings starting at $1,800
Used Nissan Murano"
321 Great Deals out of 20,363 listings starting at $2,995

Used Cars For Sale

2006 GMC Envoy XL SLT 4WD For Sale
21 listings starting at $6,945
2005 GMC Envoy XL SLT 4WD For Sale
4 Great Deals out of 47 listings starting at $4,899
2004 GMC Envoy XL SLT 4WD For Sale
48 listings starting at $2,995
2003 GMC Envoy XL SLT 4WD For Sale
3 Great Deals out of 63 listings starting at $3,488
2002 GMC Envoy XL SLT 4WD For Sale
17 listings starting at $2,995