So I know I have a GPCM, do I have a GPR also? The dealer gave me a part number for both. However I have read there is no GPR. So what is going on is is really the AIH?
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2000 Excursion Limited, Black, MBRP 4" stainless turbo-back, 229,000 miles, home-made Tymar intake, DP-5,
Pyro,Tran.Temp & Boost gauges
1990 Miata, Red 199,000 miles
2005 Rubicon, Orange, 76,000 miles
Your Ex only has a GPCM and an IAH relay. Not sure why the parts guy gave you the PN for both a GPCM and a GPR, just may be misinformed. The IAH relay rarely gets used unless you idle for extended lengths of time in cold weather. It doesn't get the workout that the GPR in the pickups do. Your GPCM is basically a solid state relay with some diagnostic brains added in to monitor individual GP function.
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