Question

2011 GMC Sierra Diesel Duramax 6.6L with engine codes P0020 and P2610. internal engine off timer performance

Answer 1

Hi there,

This P2610 code indicates an issue with the ECM. Here is some info for you.

P2610 GMC Code - ECM Internal Engine Off Timer Performance
Read more: https://www.autocodes.com/p2610_gmc.html

The P0020 indicates a problem with the Camshaft Position Actuator Solenoid Valve

P0020 GMC Code - Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2
Read more: https://www.autocodes.com/p0020_gmc.html