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Yes it is. 5.7 tbi. I am going to drop the pan again and check out the 2-3 shift valve while I wait for the aldl cable to come in. Thank you all for the help. I will post an update after I get the pan back on.

Tried swapping the plugs and things got weird. Shifted weird, speedo was out of wack it read 15mph while parked and speed would increase as rpm did. OD did not seem to be working either.

When I rewired the external transmission plug I back pulled the entire harness so that it would come out under the hood to make it easier to work with and inspect everything. I noticed that the rear speed sensor harness on mine has a 4 wire connector that it goes to about 6" from where it plugs...

Is there a cost effective scan tool that will let me monitor the shift commands and other functions? I have been checking codes with the jumper method.

TPS has been adjusted. The ECM has a reman. sticker on it. I was beginning to wonder the same thing, like there was a hole in the programming or something. The only code it has is the O2 sensor, apparently someone put dual exhaust on it and decided to opt out on putting the O2 sensor bung back...

It has been this way since I bought it, a few years ago, I know I should have bothered with it sooner but it was a run it till it dies type of situation but it never died. The fluid has always been nice and pink, no signs of grit or shavings. I dropped the pan on it last week and replaced all of...

Hello, Welcome to my first thread I am having an odd issue with my 4l80E. When shifting automatically it skips second, it shifts through all other gears 1-3-4, does not slip, nor give any other problems. When I shift it manually all gears work 1-2-3-4 no problem and if I put the shifter in 2nd...