GMC Envoy 2002

2002 GMC ENVOY
95,000 MILES • 6 CYL • FWD • AUTOMATIC
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BRAVESFAN48
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  • 3 POSTS
The engine in my 2002 GMC Envoy seems like working on 5 cylinders only. Could that be spark plugs or something else?
Nov 30, 2010 at 8:08 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
It could. Has the check engine light come on?
Nov 30, 2010 at 8:09 PM
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BRAVESFAN48
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  • 3 POSTS
No, I noticed more exhaust smell than usual.
Nov 30, 2010 at 8:13 PM
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BRAVESFAN48
  • MEMBER
  • 3 POSTS
Also engine vibrates more than usual.
Nov 30, 2010 at 8:27 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
If the check engine light hasn't come on, it leads be to think it could be related to the fuel system or even a catalytic converter that may be plugging. Check fuel pressure and the cat to confirm they are both good. If they are, there is a chance that the check engine light may be burned out.

Check those and let me know what you find.
joe
Dec 1, 2010 at 4:09 PM
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