P2138 Code

[Jkern]

I have a 14 Yukon slt. I’ve been getting p2138 code. I’ve changed the pedal and the throttle position sensor. It was good for about 6 weeks then it’s come back. Has anyone found a remedy for this?

 

[89Suburban]

I have a 14 Yukon slt. I’ve been getting p2138 code. I’ve changed the pedal and the throttle position sensor. It was good for about 6 weeks then it’s come back. Has anyone found a remedy for this?

Does it go into limp mode when this happens? Was the TPS installed properly and reset? The throttle plate should be in the wipe open position when it is installed. Unless you replaced the while TB assembly.

I went through this a few months ago. Replaced both sensors. Still kept doing it. I got desperate and started checking the plug connector on the TPS and saw the wires coming out of the harness loom were different colors than further down the harness. When I pulled the wire loom off I found a spliced section. Somebody spliced in a new plug and the connection was going to sht. I respliced it with new solder joints and it's been fine ever since.

Sill took me a a few months to get rid of the anxiety of driving it and being reliable, but that apparently fixed it in my situation.

 

[Jkern]

Does it go into limp mode when this happens? Was the TPS installed properly and reset? The throttle plate should be in the wipe open position when it is installed. Unless you replaced the while TB assembly.

I went through this a few months ago. Replaced both sensors. Still kept doing it. I got desperate and started checking the plug connector on the TPS and saw the wires coming out of the harness loom were different colors than further down the harness. When I pulled the wire loom off I found a spliced section. Somebody spliced in a new plug and the connection was going to sht. I respliced it with new solder joints and it's been fine ever since.

Sill took me a a few months to get rid of the anxiety of driving it and being reliable, but that apparently fixed it in my situation.

Yes is goes into limp mode. I went through the relearn process that the instructions said. Basically what it sounds like is I need to change the harness. When i bought the truck they had detailed the engine and there were water spots under that cover over the throttle body

 

[donjetman]

I have a 2008 5.3 in my 51 chevy pu and it throws that code and goes into limp once every 600 miles are so. Sucks