Asked by Nov 17, 2010 at 02:19 PM about the GMC Envoy

Question type: Maintenance & Repair


6 Answers


This might or might not be a transmission issue. The quickest and cheapest thing to check is the Transmission fluid If it is red and to the proper fill line it is fine if it is too low or discolored like brown or black you have a problem there. There are other things to check as you could have fuel feeding problems, spark problems, without seeing the car I wouldn't know.

1 of 1 people found this helpful.

it could just be a bad sensor on the outside of tranny,or the lockout in the tourk converter has gone bad,I would have sensors checked first.

1 of 1 people found this helpful.

My truck did the same thing. Did you ever figure out what it was that caused the problem?

Hi, did you ever find out the issue? I have an 06 Envoy that did the SAME thing to me tonight, I just bought this truck a month ago and I pray it is just the sensors. Please let me know ASAP, thanks

I replaced the whole transmission with a heavy duty rebuilt one from a transmission shop. The GM tranny was shot. Check your fluid color, if its black in color it is probably not a sensor. Good luck!

Oh that sucks....ok thanks. My fluid is still red tho so hopefully it is just the sensors. I guess I have to figure it out...

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