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Re: 1999 GTP Service Engine Soon Light
Is your GTP stock or modded? Any CAI/FWI? What was the specific trouble code(s)? Post it.
What brand MAF sensor was used? Was it a new GM, new aftermarket or a used/remanufactured? Not uncommon to get re-ocurring MAF sensor faults with aftermarket or reman.
Also, is the throttle body inlet screen installed or removed?
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