PCM Diagnostics Help Please
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
IIRC the DPC-421 is the PCM hardware family, aka has all the proper pins and physical internals, while the DAC2 or whatever is the tune. As long as the family is correct the engine will run fine, especially with a ZF6. With 4R100 the tunes matter more since they might be for the MT or the AT.
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Hotshot
Joined: Mar 2012
Posts: 10,590
Likes: 382
From: Texas
Oooook dudes, here's your dipchit story of 2018 to share with all your friends. John still rules...I do not.... apparently.
Years of OBS ownership had me looking at the wrong #30....under the hood....not under the dash.
Beers on me everyone....and a free ride in my super awesome truck that is now operational once I get more fuses...yeah, I am out of those too.
Years of OBS ownership had me looking at the wrong #30....under the hood....not under the dash.
Beers on me everyone....and a free ride in my super awesome truck that is now operational once I get more fuses...yeah, I am out of those too.
Senior User
Joined: May 2018
Posts: 261
Likes: 0
From: Choo Choo, TN
Easy fixes are the best. When you miss them at first it just makes you feel better, later after the "I'm an idiot" light goes out.
Edit: oh, and don't forget to unplug the fuel bowl heater before trying to start the truck.
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Hotshot
Joined: Mar 2012
Posts: 10,590
Likes: 382
From: Texas
To answer your question, I have no answer yet. But, this has lit a fire to get a spare and send it the guy in Tennessee that rebuilds them. When I do figure out, I'll definitely share it.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
I think when you plugged the fuel bowl heater back in, it was just a matter of time before the fuse blew. I wrapped my plug in red electrical tape to kinda create a moment of reflection as to why the tape. You can also rebuild the FBH but from what I’ve it’s not worth the money especially since you’re Western bound.
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Hotshot
Joined: Mar 2012
Posts: 10,590
Likes: 382
From: Texas
I think when you plugged the fuel bowl heater back in, it was just a matter of time before the fuse blew. I wrapped my plug in red electrical tape to kinda create a moment of reflection as to why the tape. You can also rebuild the FBH but from what I’ve it’s not worth the money especially since you’re Western bound.
Hotshot
Joined: Mar 2014
Posts: 10,750
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From: Douglassville, PA
ForScan will give you that information, Sous.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
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From: Lake Hartwell, GA
The next time I have Forscan going, I will see if I can identify the code. I will not be pulling the PCM just to get a picture of the code though, that is for sure. The part number for my PCM and the one Wesley posted are identical though, not sure if the part numbers for all PCM's are the same with different codes or not.
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Joined: May 2004
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From: Central Coast of CA
Stewart
