How to replace steering wheel pump on 2003 trailblazer

SOURCE: when replacing multi-function switch on a 2004

Yes the stearing wheel must come off.

SOURCE: 2003 trailblazer has a knock

Have you been changing the power steering fluid every
30,000,miles when doing the trans fluid at 30,000

When you do that add some lubgard for P/S
just don't use the honda version

Get the Fluid at the dealers parts counter
& lubgard at auto parts

The knock may be a worn steering rack if you have one.
That happens when the fluid isn't changed

SOURCE: 2003 Trailblazer wont start

when you go to start it does it still say driver 1 on the dispaly... or unknown driver.. if it says unknown driver it wont do anything

SOURCE: chevy steering wheel controls

You first have to disarm and remove the air bag (unscrews with bolts from behind the steering wheel) and then you will see the screws for the switches. Only the silverado awitches will work.

SOURCE: While driving my 2003 Trailblazer Ext 4x4, I went

Sounds like the pump. Here is a way to test it. Take a pair of pliers and pinch off the return line to the pump when the engine is running. (only do this for about 5 sec.) If the pump is running, it will whine and howl when you do this. If it doesn't make any noise when you pinch the line, the pump is bad.