Change compressor for stabilitrack - 2002 Cadillac Escalade Ext

Question edited for clarity.

You need a good auto electrican with a $5,000 pro grade scan tool computer to diagnose. Your issues are electrically caused, not mechanical. 'Local mechanics' don't buy the fancy scanners.

Stabilitrack can't prevent engine from starting. You have other issues preventing start up.

Check for power and ground from the harness first. After that check continuity of the plug and wire of the sensor, After that replace the bearing. It comes with the sensor.

Are you sure you have the belt installed correctly? Not hard to make a mistake. Did you get any oil or fluid on the belt? Did you change belt tensioner at same time? Usually a good idea.

you have one of your wheel sensor wires either shorted or a bad sensor.. usually your scan will tell you which one.

When I had the same thing happen on my 2010 Equinox- One of the ABS sensors had a spot on the wiring that had rubbed thru and one of the wires was shorting. The sensor needed replacing- Check all your ABS sensors and wiring. The Stabilitrack monitors the wheel speed through the ABS sensors- therefore if they are not working properly then it will not work properly. (My ABS light was NOT on in this issue)

either your EGR valve, but then you would also receive a traction control/stabilitrack light, or you could be due for spark plug and ignition wire/spark plug wire replacement(tune up)
I have a 2008 torrent that was doing the same thing but I also had my EGR Valve causing the stabilitrack/traction control light to come on. I thoroughly cleaned my EGR tube, ports in engine and EGR Valve as well as the air intake(all with carb cleaner) then reassembled and changed my spark plugs and ignition/spark plug wires. with NGK parts. solved my problem so I hope this will help you as well

Service stabilitrack can mean a number of things . When my 08 impala ss stabilitrack light came on it was just a spark plug that was bad

The engine noise is not related to the stabilitrack. Stabilitrack is usually caused by a bad wheel sensor. Get the trouble codes read to find out exactly what's going on. Which engine do you have?

traction control and stabilitrack service