Hello All,
I just finished an LS swap on my 86 k10. I got everything running good except for one issue. upon hard acceleration, Im getting a u0107 code for "lost communication with throttle actuator control". the truck is going into limp mode. it happens every single time. i have checked every wire for continuity on the throttle body, tac and pedal. all checks good. the pinks all have the right voltage along with the 5 volt ref on the TB. the grounds are all checking out too. i even grounded the PCM separately, i have maybe 4 grounds from block to frame and cab and nothing. i need HELP... pleaseeeeeeeee i thought getting the BMW fan was a pain. this is 10 times worse..
I just searched the subject. i might have a pedal and tac incompatible with the PCM. the engine is an L33 off a 2006 silverado 4x4. the junkyard lost the OG PCM and gave me one off an 05. how can i update the software on the PCM for the 06 version?