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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1667
Experience:  GM Grand Master Technician 2007. 14 year experience.
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05 envoy 4.2. while driving as engine heats, RPM'S go up and

Customer Question

05 envoy 4.2. while driving as engine heats, RPM'S go up and looses power. (Sounds like I'm driving in second gear)
JA: Have you checked the coolant level? Has there been any leaking from the hoses?
Customer: no problem there
JA: What is the make/model of your car?
Customer: 05 envoy xuv 4.2
JA: Are you fixing your Envoy XUV yourself? What have you tried so far?
Customer: Its been in and out of the shop. No engine codes, changed cam and crank sensors.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.
Category: GMC
Expert:  Chris (aka-Moose) replied 1 month ago.

Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner past midnight.

  • Sorry no one has helped yet.
  • I can help with this question.
  • Reply and let me know when your able to work on this concern.
Customer: replied 1 month ago.
Where's my answer?
Expert:  Chris (aka-Moose) replied 1 month ago.

Is the power loss from the engine or is it from the transmission?

Does it seem like its shifting correct and in the correct gears?

Are you saying the idle speed rpm is to high or when driving the rpms are higher than they should be?

Customer: replied 1 month ago.
Rpms higher
Expert:  Chris (aka-Moose) replied 1 month ago.

Is the power loss from the engine or is it from the transmission?

Does it seem like its shifting correct and in the correct gears?

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