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11-17-2020, 10:30 PM | #4 |
Registered User
Join Date: Mar 2017
Location: yucca valley
Posts: 239
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Re: 2003 GMC 2500 HD 8.1L need help with cruise control wires
I had the same problem ended up being broken wire inside insulation at the intake throttle body harness plug. Same reduced engine power. Just bought a replacement harness plug from chevy and wired it in.
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