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Without it plugged I don’t think it gets the signal resistance is needs and since I can’t datalog properly with it hooked up testing what the...

The ccm drives the digital display on the dash, so it is likely to not work when you pull the fuse. I suggest you make an idle traffic log with obd1...

Well my Speedo hasn’t worked really since a week after I got the car. Dash just reads full values for everything needs to be repaired.I put original...

Yes, that code has nothing to do with the valve body or the VSS sensor. Did the speedometer work? The code is referring to a 4000 pulse per mile...

I used an original 95 y body bin as a base for the tune installed. From some reading I found the fault is from the pcm to the speedo. Not trans to...

I own a few of these trucks, all GMC's though , a '70 , 2-'71's and a '72 , they are by far my favorite of the GM lineup . IMHO , they should all...

Well it could be that the ccm use different address or gm somehow switched something on the aldl line communication. On the eehack`s main window...

Sorry that’s my bad it’s a code 97 for vss I jumped the gun. Yes I’m going to have to agree with you on the swapping the right knock sensor and...

You need to load a calibration from 1995 on the PCM for the transmission. You sure you get code 96. Cant you just grab a knock sensor from 94-95...

Success! Started pulling fuses and the airbag/ccm ones did it. Specifically the ccm 3 is the one that does it. Well anyways she worked! Eehack kicks...

Well the day kinda ended in disappointment my red river cable will only work with 94/95 scan program as of now. Winflash or eehack just won’t...

Cool. The LS swap has replaced the smallblock as the defacto engine swap. Which is fine, except that anyone choosing to use the sbc seems to...

I understand the goal to use a Ford computer. The low cost option of using a GM 16197427 PCM configured for MPFI mode is worth a keyboard...

it maybe picking up knocks when it first starts from the cold temp spark adder if the file you are running has that scaler in it

Few guys you can read about over on eectuning.org here
 one user comes to mind, shaker. or shaker something.

You need to control the transmission so Dynamic EFI/EBL is out unless you want to bastardize together a dual PCM setup. I personally wouldn't...

Location?

I happen to own a 71 chevy 3/4 ton long bed 2 wheel drive with a ho72 4:56 gears with a 4l60e and matching 5.7 l31 vortec and it seems to go just...

So I zeroed out the altitude spark bias and turned the code 43 back on. Unplugged the computer connectors for a bit and then took it for a drive. Log...

OP, you have a 4L60E/80E not sure where DynamicEFI is on trans these days- I know one of those later TBI ecu's was very versatile and could even do a...

When I posted this thread it showed the 10 degrees thread you mentioned. I see that bias was still in there so I just took it out and zeroed the...

There you go....I didn't recall seeing that item. Anyway you tried to help me awhile back and it was appreciated- I would like to think I'm a...

Yes, I'm familiar with Dynamic EFI EBL. The challenge is Dynamic EFI requests "do not post EBL on public boards". dave w

a lot of gm calibrations will pull a massive amount of timing when there's a knock sensor error code of any kind present, i'd guess that's whats...

I remember that one member had to change altitutd timming to stop a simler problem,i think that is what it was.

Thanks, nice words like that go a long ways when doing things like this. I'm far from an expert with any of this but I'm doing what I can to make...

It needs to be older :thumbsup: I like those trucks too. Got one sitting in my field. It's a buddies truck. Think he got anxious for a project...

Pete, I'm not going to lie, while I feel I know more about computers and electronics than the average joe I still have a lot to learn from people...

Could it be a table or scalar somewhere pulling 10 degrees for some reason that has possibly been overlooked? With the 411 PCM running the show in my...

I'm just gonna leave this here......