Reduced Power Mode

[cbr9rider]

Hey guys, I have a 2015 GMC Sierra 6.2 with Max Tow Package with around 12,800 miles . Last week had an issue where the Reduced Power Mode came on and couldn't drive over 4 mile an hour. Long story short took to dealer and the dealer said that for some reason the computer lost programming so they flashed it and sent me on my way. Well this morning the truck did the same thing. Have an appointment for in the morning but was wondering has anyone had this problem before?

[mjoekingz28]

I think it has to do with the electric throttle

[TJay74]

There are several, several things that can cause reduced power mode. The dealer needs to find out what is causing the ECM to drop into reduced power mode.

[silveradosid]

on some gm it is bad grounds that cause this

[cbr9rider]

Took to the dealer today and this is what they said the code was. P16F3 Internal Control Module Redundant Memory Performance found bulletin #PI1459.