Test U: The Tow Haul Indicator Is Never on

PINPOINT TEST U: THE TOW HAUL INDICATOR IS NEVER ON

U1-U4:

Normal Operation
The tow haul indicator illuminates when the tow haul button is pressed on the column-mounted transmission range selector lever. When the vehicle is in the tow mode, the indicator is illuminated by a signal from the powertrain control module (PCM) to inform the operator that the vehicle will not shift into overdrive. When the indicator is illuminated, the vehicle also provides engine braking and early transmission downshifts when braking on downhill grades.

Possible Causes
- PCM
- Instrument cluster