PCM DPCs

[A/Ox4]

I know there are a couple "bad" DPCs that you want to avoid. Are any better than others? And what are the differences?

I have a CA truck with DPC492. :fyi:

[cleatus12r]

There is nothing "bad" about any of them. The hardware differences are necessary for 49 or 50 state trucks, Excursions, Vans, 97 CA-trucks, and what transmission is being used.

[dietoremain]

Good thing my trucks from tx. Dumb ca trucks..lol.

[A/Ox4]

Are they any quirks with my PCM? My shifting is funny ever since I got my PHP

[cleatus12r]

Are they any quirks with my PCM? My shifting is funny ever since I got my PHP

Not necessarily, but what we have run into is pretty noticeable variances in what we have to do to shift pressures between 99-01 trucks and 02-03 trucks due to hardware differences in the transmission (valve body spacer plate most notably).

[A/Ox4]

My shifts are just REALLY firm (Most of the time) and the shift around 25mph is usually realllly bad. But sometimes they are perfectly fine..:confused: