Suddenly without brakes or power steering

Hello Francisco...

There are several different elements to your anti-theft
system...

Other than lost or damaged keys
the "coil" in your steering column would be a great place to
look for trouble... I am going to pull up a part to show you the ease... (eBay & AMAZON work equally well)...

Rockauto
2003 CADILLAC ESCALADE 6 0L V8 Ignition Lock Housing RockAuto

More Information for STANDARD MOTOR PRODUCTS US312L

Owners manual... (owners anti-theft key process)
CADILLAC ESCALADE EXT 2003 Manual Page 99

And finally ... FREE circuit drawings from
BBB Industries at (registration required)

BBB Industries Premium Alternators Starters Power Steering Products

Look at engine... electrical (ignition enabler)...
Hope this gets you "started".

Carnac the Magnificent

You need a scan tool that can relearn the Steering angle sensor since you changed it's operating parameters.

Yes, but it may not be the wires. Inspect carefully, and replace damaged parts.

check the ground wires on the frame by the back axle

NOT A REAL TRUCK BUDDY YOU DONT NEED A TAILGATE YOU NEED A TRUCK

are you talking about brake fluid --power steering lines do not connect to the brake system --- also their is no weep hole at the bottom of the brake booster ---can you please clarify what is leaking and where --power steering lines from pump to radiator to steering rack ----brake booster mounted to fire wall with brake master cylinder bolted to front

GM used a pressure sensor on the power steering system; check your power steering fluid level to see if you are low on fluid. If you are full on fluid the pressure sensor is bad if the RPM does not increase at low speeds for turning assistance.

You can get a free scan at Autozone or Oreillys to name a few, and while their scanner is working turn the steeering wheel to see if the RPM drops.

If the scan produces a Code you can contact us with the number and we can advise you or you can fix the SUV with the info the Autoparts guy gives you.

I hope my solution has helped you and I will be happy to respond to a reply.

Whats dose it mean went I have my service stability system light on and it dosent trun off .. I have a Cadillac escalade truck 02 All wheel drive hope some one could help me.......

I have a 2002 Cadillac Escalade EXT I was removing the aftermarket CD player and it's parked now my gas gauge and speedometer and center console doesn't work what do I do

i had the same problem u need to take off and clean the throttle body and it clears right up