Join Date: Dec 2006
Location: Valrico, Florida
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I haven't been on this site for quite awhile. I have a 2007 Redline. It has 33,600 miles. I am now out of my waranty, however, I had this problem before my warranty ran out and took it in to the dealer. I have had it in several times and they can't find the problem.
My turbo goes in and out as I am driving. For a while it runs fine. I had the GMPP Tune about three years ago. Sometimes when I push the throdle down I only get up to 5 PSI - when working properly I get up to 19 PSI. Many times as I am crusing on the highway the engine will juump in and out of the turbo so that the car will act like it is cutting in and out. Sometimes as I am running at a steady speed (say 60 mph) you can see the PSI jumping up and down while I am holding the throdle steady. Sometimes the engine light will come on while that is happening - other times the engine light doesn't come on.
When I take it to the dealer they can't seem to make it happen. However, the last time they told me that the reason the engine light is on is related to the turbo but they can't make it do it while they have the car.
Sometimes if I stop, turn the engine off and then restart the car the turbo is back on.
I am affraid when it is going in and out of the turbo that it may also be hurting the transmission?? It seems to me that it is probably in the electrical system or the computer chip (chips).
I am not much of a technical person. I can't continue to drive the car any distance for fear of damaging something. I also believe GM is responsible since I took the car in for this problen prior to the warranty running out.
Maybe someone has an answer. I apprciate any thoughts or advice any of you may have.
Chili Pepper Red
Black Premium Trim
Chrome Wheels (No Spoiler)
Ordered 12-28-06 / #KRQVP3
Picked it up 3-27-07