A/C cutoff and drive signal - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BIGglaSS · 12-28-2021, 04:30 PM

I'm working out a few details of my 2004 5.3 swap. (blue/green PCM)

I installed a Holley Sanden A/C pump. It requires this $200 part #15982NOS to cutoff the compressor over 4000 rpm.
https://www.summitracing.com/parts/nos-15982nos

I'm not interested in buying another $200 part with 20 wires hanging off it. And, I don't really have a good place to install it. There has got to be a simpler cheaper way to cutoff the compressor at 4000 rpm?

Second, is there a PCM signal for "drive". I'm looking for a way to trigger door lock relays when shifted to drive.

Thanks

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12-28-2021, 04:30 PM	#1
BIGglaSS Registered User Join Date: May 2014 Location: ID Posts: 663	A/C cutoff and drive signal I'm working out a few details of my 2004 5.3 swap. (blue/green PCM) I installed a Holley Sanden A/C pump. It requires this $200 part #15982NOS to cutoff the compressor over 4000 rpm. https://www.summitracing.com/parts/nos-15982nos I'm not interested in buying another $200 part with 20 wires hanging off it. And, I don't really have a good place to install it. There has got to be a simpler cheaper way to cutoff the compressor at 4000 rpm? Second, is there a PCM signal for "drive". I'm looking for a way to trigger door lock relays when shifted to drive. Thanks __________________ My museum of good intentions: 1957 3100 BBW restomod -- 1970 442 W30



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