another P2138

[ord27]

new here. I thought It'd be worth a try.

Vehicle: 1959 Chevy Apache with a Chevy performace LS3 connect and cruise...6.2
4L70E transmission and 4wd transfer case
I think it's around 1012 Camaro SS?
and a side note...vintage air and led tail lights
trailer light harness
I have driven the truck a lot. I didn't have any issues for the first 45,000 miles
then....ugh

Truck throws the P2138 code and enters "limp" mode.

things I've tried:
New throttle body
new computer
new pedal
New pigtail at the TB
new harness on Dakota Digital cruise control
disconnect the cruise control

Some of the steps have "solved" the problem for anywhere from a few hundred miles to a couple of thousand miles, but the issue always comes back.
The issue happens currently every day

question; is there a way to bypass this code? increase the voltage difference acceptance?

A local tuner told me that chevy performance has the computer locked from being able to reprogram

any help is appreciated. Any good programmers in the DFW area?

[Alvin]

Have you inspected the wiring to the pedal very closely?

The only time I had this is when a customer ran a sheet metal screw though the floor and into the wiring to the pedal.

[ord27]

that is the only wiring that I haven't replaced. I'm considering a new pigtail for that.

The truck has a lot of vibration. It's not a Denali by any means.

[TheMechanic]

Back probe your signal return with a DVOM and set for min/max. Drive and attempt to force the code. Back probe at the ECM/PCM

[Hot Rod Specialties]

I just had similar issue and it turned out to be a power issue to the trans computer. Unplug the bulkhead and see if it throttles without issue.