Does your truck have that goofy dual to the muffler exhaust? If so were you able to do the servo without dropping the trans or disconnecting the exhaust? The exhaust being in the way is the only...

Good information there.

I've always read use the stock shift times, cut in half as a baseline.

The corvette servo is also the #1 thing everyone recommends doing to improve the 4l60's. For the...

So I went in with a buddy on HPtuners and figured I'd play with it on my truck a bit. I used the credit and unlocked it to my vin then realized everybody hates the "blackbox PCM" that it has in it....

Okay, I got my Burn2 and just flashed the stock ARJT bin for a baseline.

I assume I just line up the notch in the chip with the notch in the socket? (Looking at it like in the picture, with the...

ECM is on it's way. Gonna make sure the adapter in it is kosher, then order my Burn2. Stay tuned. (get it, stay tuned? lol)

Another update. I just installed the knock sensor that matches the ESC and threw the laptop on. It looks like it's working. I see knock at 0 before I crank and 20 or so after cranking. After a...

It looks like a 28pin socket was soldered in where the original one went.

http://i.imgur.com/BvvV9.jpg

Okay I get it now. I thought the OEM chips were reusable, you need the adapter to use the newer style, reprogrammable chip.

I just found a 7747 ECM with adapter already installed with a blank...

Thanks for the reply!

My CEL does work.

So I'm correct in thinking it doesn't matter which ESC/KS combo is installed, as long as they are a matched pair?

ACSZ 0050 is what's on my "stock"...

So THIS thread is what brought me to these forums.

So I just bought a 1991 C1500 truck. It's got a older style (non centerbolt heads) TBI 350 and 700R4 in it.

I'm trying to fix up a lot of...