2004 escalade, tachometer only register between 0-1000 rpms. Idles at 0. ???

Possible heat failing crank sensor . Does the tachometer register if you attempt to crank the engine after stalling ?

On this website you find fuse box diagram and description for Cadillac Escalade mk2 (2003 - 2004)

Cadillac Escalade mk2 Second Generation 2003 2004 fuse box diagram Auto...

may need to check your vacuum lines. Your car probably has a MAP senor (Manifold absolute pressure) so if you have some sort of leak into your intake manifold it will raise engine rpm to compinsate for the extra air.

If you're wondering about the Traction light on the dash...
Make sure you have all the same tires with uniform tire wear. Large differences in tread wear could cause this.. Another cause is a wheel speed sensor that's reading incorrectly and registering one wheel at a different speed than the other speed sensors. This would require the use of a scan tool that can read ABS data, to find the problem.

Sounds like a solenoid or two in the transmission is dirty or defective. Needs a transmission rebuild to rectify it, or a replacement transmission that has lower miles or a newer transmission that doesn't have this problem.

One can try a transmission flush and refill, which costs about $100 or so, but that may not fix the problem. A rebuild is much more expensive, but is the way to go if you plan on keeping the vehicle for years to come.

lol...either a map sensor or the throttle body sensor....

if it only does this when its cold its normal, the car is just setting a higher idle to warm up the engine

BUICK RENDEZVOUS IDLES UP REALLY HIGH...WITHOUT PRESSING GAS. WHAT IS THIS?

If you havent changed the spark plugs, id start there.

sound like the lift pump!