I just had a similar issue - here is the timeline:
Friday -washed truck ( touchless drive through ) then drove truck 75 miles from 8F to ski mountain where overnight temps got to -2F plus windchill maybe -15F.
Saturday evening: (2F plus wind chill) truck started _went approx 200 yards - (did not notice no throttle response at this point). Stopped to check H and L gears and pushed Center Diff on. (First time to do this since owning the truck) VSC TRAC and VSC Off came on. Turned Center diff off. VSC TRAC and VSC Off stayed on. Applied gas, then noticed no throttle response but engine was around 1000rpm. Coolant and oil temps were mid range. PWR button was also stuck on.
Checked throttle cable- not moving when accelerator pressed but would rev when moved by hand. With pedal to floor RPM’s would go to 3500.
Managed to limp back to starting point in this mode. Went to eat and started truck 1 hr later and had throttle response. VSC TRAC and VSC Off lights and PWR still on. Left it for the night.
Sunday morning: (2F plus wind chill) - Started no problem. Got PWR button unstuck. Same issue -no throttle response and VSC TRAC and VSC Off lights still on.
Disconnect batter and pulled the EFI relay and let sit for 10 minutes. Reinstalled relay and reconnected battery. Truck started and VSC TRAC and VSC off lights cleared. Throttle response returned and truck is driving back now with not lights on so far.
Maybe there was several things going on at once, but as I cleared codes can I be confident I actually have Active Trac and VSC? Also if anyone has any insight into why there would be not throttle response and why it would then return would be much appreciated.
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