2008 GMC Envoy . . Trouble Codes P0306 and P0171

Asked by Dec 08, 2013 at 06:19 PM about the 2008 GMC Envoy

Question type: Maintenance & Repair

Engine light on and engine misses when cold

2 Answers

264,285

P0306 is a faulty ignition coil #6 or a bad spark plug. Switch the #6 coil with #4 coil and see if you get a new code P0304 and you know the coil is bad vs the plug. P0171 is a lean condition, maybe related to P0306.

1 of 1 people found this helpful.
72,455

Check for a vacuum leak. If you have over 100,000 miles on your Envoy you're due for a tune up. HTH. -Jim

Your Answer

GMC Envoy Experts

  • #1
    dandyoun
    Reputation
    420
  • #2
    ericjames
    Reputation
    410
  • #3
    Js08016
    Reputation
    340
View All

Related Models For Sale

Used Chevrolet TrailBlazer
47 Great Deals out of 4,260 listings starting at $1,500
Used GMC Yukon
604 Great Deals out of 20,706 listings starting at $2,500
Used GMC Acadia
1,046 Great Deals out of 51,431 listings starting at $1,900
Used Chevrolet Tahoe
829 Great Deals out of 42,174 listings starting at $1,987
Used Ford Explorer
1,270 Great Deals out of 70,071 listings starting at $1,000
Used Ford Escape
1,263 Great Deals out of 104,495 listings starting at $895
Used Chevrolet Equinox
1,172 Great Deals out of 70,675 listings starting at $1,000
Used Jeep Grand Cherokee
1,078 Great Deals out of 72,617 listings starting at $1,195
Used Nissan Murano
408 Great Deals out of 23,374 listings starting at $400
Used Ford Expedition
398 Great Deals out of 17,420 listings starting at $1,500
Used GMC Sierra 1500
1,181 Great Deals out of 64,912 listings starting at $999
Used Honda Pilot
755 Great Deals out of 41,355 listings starting at $998

Used Cars For Sale

2009 GMC Envoy For Sale
60 listings starting at $5,995
2008 GMC Envoy For Sale
12 Great Deals out of 300 listings starting at $3,499
2007 GMC Envoy For Sale
9 Great Deals out of 326 listings starting at $2,200
2006 GMC Envoy For Sale
10 Great Deals out of 358 listings starting at $2,350
2005 GMC Envoy For Sale
3 Great Deals out of 231 listings starting at $2,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.