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Throttle Position Sensor problems
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Question
arreis1002
I have a 2001 GMC Sierra 1500 4.8L
I have had the same issue multiple times now. If I let the truck idle
for any length of time, especially when the weather hot, it goes into
"Reduced Engine Power" mode and I can do nothing but limp to the side of
the road. I have taken it to my local mechanic (who I've used for over
20 years) and each time it throws a TPS failure code. My mechanic is at
a loss as he's never seen this happen before and it has happened 4 or 5
times to me. The TPS has been replaced each time.
Any ideas?
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