Code B664, Cruise Acceleration Too High

If any codes higher than B664 are also set, go to that code(s) first.

This code will set and disengage the cruise control if vehicle acceleration exceeds a preset rate, calibrated in the BCM. This could occur on slippery pavement, or during a long downhill acceleration. This could also occur for some mechanical problems such as transmission slippage. Under these conditions, code setting is normal and driver should be advised.

Clear the codes and road test vehicle to verify normal operation.