06 Gmc Envoy Denali XL

Asked by Rachel Jun 14, 2018 at 06:38 PM about the 2006 GMC Envoy XL Denali 4WD

Question type: Maintenance & Repair

My 06 Gmc Envoy Denali has been acting up. It
doesn't do it all the time but sometimes it doesn't
want to start but when I can get it start white
smoke comes out of the tailpipe and when I put it
in drive it bogs out and dies. I have replaced the
map sensor and reset the pc. What else could it
be?

3 Answers

Rachel answered 6 years ago

I have tried fuel injection cleaner and have cleaned the throttle body. It also idles high but not all the time

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10

Breeze1969 answered 6 years ago

Check compression on each cylinder could possibly be head or head gasket problem

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