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I was going down the road heading home and accidentally hit the curb, felt hard, pulled over checked everything I can possibly think to check and nothing was wrong mechanically. Get back in to get off the road and turn the key to run and immediately the engine starts and the starter motor stays...

Yep I've had my share of problems with the thing, but it did work (for the most part) before my body harness upgrade. I'm just looking for some input on what the possible culprits are.

My tachometer (style that mounts next to the w/s wiper motor) was working after my 200amp upgrade and after my A2 engine harness upgrade, but now is not working after my A2 body harness upgrade. A/c ring terminal is hooked up to the tachometer a/c tap. The other cable is plugged into the...

Got 24v at the gauge

I have the gauge ground, gauge cluster ground, and the two body grounds hooked up. Any other ones?

Yep, will consolidate in the future.

Only an inch of spline? I have 3 inches, but I'm not the one that found that out. I actually sent both in to be modified but the drive shaft company said there was more than enough spline left on the front to accommodate the extra space. The whole assembly is quite right and doesn't really move...

I wanted to post a write up of just some of the parts of my 4l80e upgrade, because there were a couple things that I had questions about in the beginning that I wish I would have known. So here's my experience. My initial setup on my vehicle was an A1 series, which meant the parking brake...

Upgraded to the new A2 body and eng harness and all the gauges work except for the voltmeter. There are no unconnected wires in the battery compartment, whats wrong? Broken gauge?

What do you guys do to fix squeaky suspension? Pressure wash the shocks? Lubricate them? Replace them?

Got the 4l80 to shift! turns out the STE/ICE pos connector wasn't actually connected. Don't know how I missed that but now the tranny works. Only problem is its throwing code 22, low TPS voltage. current symptoms are radically different shifting points: 1-2 happens at 2000 rpm 2-3 happens...

Okay, will consolidate in the future.

Found this on epay: TCM2100AA

Do you have a sheet to cross reference the numbers and the truck engine combo?

Well that makes me feel a little better. I'd rather have the problem be in one of the sensors rather than the computer. I believe the chart of computers and proms listed anything after 2001 to be interchangeable.

Yeah I may be getting ahead of myself, my vehicle is down at the transmission shop right now so I'm just planning it all out for when I stop by tomorrow. As the for ESS, like the TPS is usually has a range of voltage for idle and various speeds. I thought I saw info on that somewhere, but can't...

Also, what should be the proper voltage and wave pattern for the ESS? Just took a quick look through the 4l80 manuals I have and it doesn't mention that

Well I'd like to say I have the correct matching TCM, since it came with the transmission, but you never know with these ebay sellers. I have another box that I'd liked checked up on. I'll have the chip number tomorrow. As for the box, If anyone knows where to get new computers for specific...

Also I just read through one of many 4l80 info documents and it talked about the EPROM and PROM chips. Both are reprogrammable, but the EPROM, the 2001+ 2nd generation TCM is a non removable chip that is probably just easier to program. But both are programmable, probably a SOB to find a tool...

Could you attach that document up? I don't believe I have that one. Sounds pretty useful. If I go through the various checks for the system and find that its not the wiring and not the lamp and the TCM is just fried, I'll have to just get another box... Which brings me to the question, I know...