What would cause intermittent codes p0752 and p2138 on a 2007 GMC Acadia?

Question

Acadia drives normally but once in a while when stopped at a light the CEL comes on and reduced power disclaimer comes up and vehicle will not accelerate. Shutting vehicle off and restarting will reset the issue and vehicle drives normally. This usually occurs once every few days.

Answer 1

P0752  Shift solenoid (SS) 1 valve performance - stuck on

P2138 Accelerator pedal position (APP) sensor 1- 2 correlation

When P2138 code up it affects the transmission shift condition ,what will cause a intermittent condition is a failing TPS sensor

Answer 2

P0752 GMC - 1-2 Shift Solenoid Valve Performance - No Second or Third Gear
Read more: https://www.autocodes.com/p0752_gmc.html

P2138 GMC - Accelerator Pedal Position Sensor 1-2 Correlation
Read more: https://www.autocodes.com/p2138_gmc.html