Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2771 sets if one of the following conditions occurs:
Condition 1
- The 4WD low switch is in 4WD low.
- The transfer case is not in 4WD low.
- The TCC slip speed is -3,000 to -50 RPM.
- The transfer case ratio is 0.08-1.2, the transfer case ratio is the engine speed divided by the transfer case output speed.
- All conditions are met for 5 seconds.
Condition 2
- The 4WD low switch is not in 4WD low.
- The transfer case is in 4WD low.
- The TCC is commanded ON.
- The TCC slip speed is 100 to 3,000 RPM.
- The transfer case ratio is 2.5-2.9.
- All conditions are met for 10 seconds.