4L80E with 16168625 ECU, is this normal?

[wanderingturtle]

I'm extremely interested in your .bin file!

dave w

Got it!

[wanderingturtle]

I also picked up a couple of this 7427 PCMs from a junkyard yesterday. Got them for 20 bucks each, no guarantee. I'm gonna try just modifying my bin to meet my needs, but I'll also try burning my bin to a chip and running it in those PCMs to see what happens.

Oh, and ain't nobody got time to wait for yet another adaptor to be shipped!Attachment 10761

[89S10_Project]

I also picked up a couple of this 7427 PCMs from a junkyard yesterday. Got them for 20 bucks each, no guarantee. I'm gonna try just modifying my bin to meet my needs, but I'll also try burning my bin to a chip and running it in those PCMs to see what happens.

Oh, and ain't nobody got time to wait for yet another adaptor to be shipped!Attachment 10761

Feel like selling one of those ECUs?

[wanderingturtle]

Feel like selling one of those ECUs?

Yes, I will be selling one. I need to test them both first.

[89S10_Project]

Yes, I will be selling one. I need to test them both first.

Roger that, PM sent!!

[wanderingturtle]

Here's what the top of my mem-cal looks like without the cover removedAttachment 10762

[jim_in_dorris]

I seem to remember reading that early and later 4l80e used different solenoids to shift, the early 4l80Es would work with an 8625, but the later 4l80Es used a pwm selenoid and the 8625 could not provide the pwm. I could be wrong, but I seem to remember reading that somewhere while I was researching the switch.

[89S10_Project]

I seem to remember reading that early and later 4l80e used different solenoids to shift, the early 4l80Es would work with an 8625, but the later 4l80Es used a pwm selenoid and the 8625 could not provide the pwm. I could be wrong, but I seem to remember reading that somewhere while I was researching the switch.

I am almost certain this is the case, and applies to the 4l60e as well. I'm researching possible upgrades from a 700R4 at present.

[dave w]

Based on the information available to me, BJDR is a 1994 definition $OE (4L80E) PCM 16196395.
Superseded to BLHH / PCM 16197427 then superseded to BYXN / PCM 16197427

dave w

[wanderingturtle]

Based on the information available to me, BJDR is a 1994 definition $OE (4L80E) PCM 16196395.
Superseded to BLHH / PCM 16197427 then superseded to BYXN / PCM 16197427

dave w

It also came in this 16168625 PCM and runs everything just fine :) I would say that I have the 16168625 PCU with factory 4L80E bin file.

Do you still have your 16168625? Do you want to try this bin in it and see if it will shift? Or maybe it's like they said, and mine is an early production '94 and they changed the transmission sometime partly through the year and the later ones require a different PCU. I'll see if I can find out when my van was made.

[1BadAction]

The force motor changed in 94, but despite what some say, I noticed no difference when swapping to the later 614hz model (the original early force motor is NLA) with either the 7427 or the 6395 PCM. Absolutely ZERO difference. However, I do not like the BJDR bin as a starter. It didn't seem to act right so I went to the BHDH as my basis and all was well. Additionally, there are some P chassis and other big truck bins floating around out there and the ones I have tried all seem to suck. The parameters that are different are not defined, but they sure make the truck act odd.

[wanderingturtle]

I do not like the BJDR bin as a starter. It didn't seem to act right so I went to the BHDH as my basis and all was well.

What engine was this with?

[1BadAction]

What engine was this with?

TBI 454 in my sig.

[Chewy1576]

Not sure where else to upload this, but I came across a 16197427 / BLHH ECM out of a K2500 Suburban. I couldn't find a .bin for BLHH anywhere, so I will provide it here.

[dave w]

It also came in this 16168625 PCM and runs everything just fine :) I would say that I have the 16168625 PCU with factory 4L80E bin file.

= Unicorn