Actions Taken When the DTC Sets

WARNING: This page is about a different car, the 2021 GMC Terrain. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0721, P0722, P0723, P077C, P077D, P172A = Type A

Autostart/Autostop = Disable
Grade braking = Disabled
Manual Shift Control = Disabled
Neutral Idle Mode = Disabled
Powertrain braking = 1st Gear Disabled
Tap Up or Tap Down = Disabled
TCC Control = Disabled
Transmission Adaptive Values Learn = Disabled
Transmission gear allowed = Reverse & Gear 5