PCM/ECM Compatibility
Logistics Pro
Joined: Jan 2014
Posts: 3,595
Likes: 17
Most chips I have seen disable it or are not compatible with PATS. You know that much at least, you also have a GH so I imagine your Theft light flashes for a bit on start up.
I don't believe they're compatible right off the bat, you may need to get the chip burned to compensate for some things. Honestly you'd be better off talking to Larz or Matt at GH and see what they say since you're running their setup.
I don't believe they're compatible right off the bat, you may need to get the chip burned to compensate for some things. Honestly you'd be better off talking to Larz or Matt at GH and see what they say since you're running their setup.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,253
Likes: 763
From: Houston, Texas
If you're running a Gearhead chip, it by passes the PATS and overrides what's on the PCM and tells it: "You're now PMT1 instead of EDM2".
I've run a PMT2 PCM on my Excursion, the ONLY problem was that it wasn't from a California Super Duty, so it had no clue what to do with a GPCM and was looking for a glow plug relay instead. This lead to hard starts during the winter until I replaced the PCM with the EDM2 PCM I originally had.
I've run a PMT2 PCM on my Excursion, the ONLY problem was that it wasn't from a California Super Duty, so it had no clue what to do with a GPCM and was looking for a glow plug relay instead. This lead to hard starts during the winter until I replaced the PCM with the EDM2 PCM I originally had.
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Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
Likes: 110
From: Western AR
Tor, was it a DPC-452 chip on the PCM? I am being told that is what determines if it will detect the CA features on our Excursions. When I try to buy a PCM, the retailers keep telling me they can't sell me a non-DPC-452 version of the PCMs.
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