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What symptoms were you guys having with the 05 gto with the tps? I think i am having a similar problem...
What symptoms are you having?

With the TPS, the car goes into "Reduced Performance Mode" (shows up on the dash) and let me tell you, the performance is severely reduced. It's like idling up to speed.

Happened to my car with about 3500 miles on it. A couple of starting cycles later and it cleared and was fine while I waited to couple weeks for the replacement part, and it was all covered by warranty. Been fine ever since. (@53k now)
 

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I'm new to this forum. Anyone else having a problem with their 2005 GTO and the throttle position sensor? I have had 2 replacements and I have only 3500 miles.
I have had that problem with other GM vehicles but never with my GTO. Had my 05 GOAT for 3 1/2 years without one problem. I don't drive it a lot. It has 12,850 miles on the clock.
 
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