Surges or Chuggles

Steps 1 - 3:

Steps 4 - 19:

SURGES OR CHUGGLES

DEFINITION: Engine power varies under steady throttle or cruise, making it feel as if the vehicle speeds up and slows down with no change in the accelerator pedal position

IMPORTANT: Make sure the driver understands Torque Converter Clutch (TCC) and A/C compressor operation as described in the owner's manual
- The speedometer reading and the speed reading on the scan tool should be equal.
- Before diagnosing the symptom, check service bulletins for updates.