Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

P0751

Gear Command = 1st Gear
Gear ratio 1.09 to 1.20 detected.
Transmission slip = Greater than 400 RPM - For greater than 2 s

The above condition(s) must occur 8 times.

P0752

Gear Command = 3rd Gear
Gear ratio 4.35 to 4.81 detected. - For greater than 1.5 s = 4th Gear
Transmission = 1st Gearor2nd Gear
Transmission slip = Greater than 400 RPM - For greater than 1.5 s

The above conditions must occur in sequence 5 times