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You probably should splice the BLK "A" wire from the ESS to a wire on Pin 23 BLK/PNK of the TCI module. Then the “B” wire to Pin 12 YEL. Many military 6.2/6.5 4L80 owners have done this and it works. I have always wondered why the company never addressed using the ESS or a compatible CPS (2 wire...

The ESS has an 8 tooth reluctor in it, so it gives 4 pulses per crank rev (it's driven off the cam, so it runs at 1/2 crank speed). It's just a regular variable reluctance type speed sensor, so each output pulse is a single cycle roughly sinusoidal pulse that varies in amplitude with engine...

Could be that IP OS filter, you don't need it. Do you know if you have an OBD1 or OBD2 system? Do you know where the PCM (computer) is? Should be inside the cab. Does it have PINK & BLUE or BROWN & BLUE connectors?

That orange wire is special Teflon insulated and can handle the heat no problem.

part # 15986676 @ R.A.

If your transmission is in working order it will have reverse and 2nd gear when you unplug the main trans electrical connector on the drivers side. Either year PCM will control the 4L80, there are no differences as far as that is concerned.

I googled this - seems to just pop off.

Yes. I have never seen studs on the drivers side, but anything is possible.

The stud goes in the first hole. The bracket goes on the 2nd hole with a bolt. That is how GM did it. I'm sure there must have been a purpose for the stud but I have not seen it. You will notice the bracket fits snug in the pan rail. That keeps it from twisting when you tighten the bolt.

Second pan bolt, 1st bolt is a stud.

The battery to starter cable is clamped there.

My engine, not going anywhere. :cool:

https://www.dieselplace.com/posts/9999179/

The resistor bypass only replaces the signal the passlock module wants. Passlock is still working. The SECURITY lamp will normally go out along with the WTS lamp. That should not cause any additional wait time. AK is correct, you can have the security turned off by a PCM reprogram. A 1997 PCM...

That is just a bad drawing, the shield bolts to the starter brace bolt or stud on the block. The difference with that new shield in post #37 is the rear of the shield bolts directly to the stud that holds the transmission to the block. I don't remember seeing one like that but it is well...

Might be this -

Here you go.

The long rod is the turbo brace, the short one goes from the hat to the turbo.

Male conn is 12129155 term is 12084586 FM conn is 12129081 term is 12015858 The only reason for that conn. is so the main harness can be installed and removed without cutting any wires. Solder it together and forget it.

1996 and up (obd2) do not need the LP/OPS relay mod. The PCM controls the LP with the LP relay and the OPS is “redundant” per GM. With the key off and the LP running does unplugging the OPS shut it off?