20 Most Recent 2005 Cadillac Escalade Esv Questions & Answers

The park switch inside the motor needs to be replaced.

test the sensor and wiring connections

If the warning light is coming on for more than a minute, it should be setting a trouble code in the body computer for the problem that is occuring at the time. You may want to have someone check the body computer for trouble codes next. The compressor would run if the system looses air pressure or if a load is added to the truck.

Brake Switch or Shifter Solenoid ,are possibles Have to look at wiring diagrams, to find how those items work & what is most likely, to need adjusting or replacing, if it fails a test

Here's what you need Andrew,it says if bad it won't work or it won't turn off.

Bad switch.