eberhama

Either put a mechanical gauge on it, or find a friend with a known good cluster to pop in. Rule out gauge error. If its really zero psi, the motor would probably rattle. I've seen the bad o-ring cause pump cavatation, but that's usually on the 07-09 trucks.

99-06 has hydraulic clutch. Even used the same slave cyl. as a Camaro.

I would think pedals out of a 99-06 manual truck would be easiest, since it's a bolt in.

I'm sure you'd rather just bolt one on and go, but you can swap the little latch levers on the handle and make a rear handle into a front handle. Might open up the search a little.

Check out this thread on the same subject, by the same person, from last week:

When did the symptoms start? Die on the road? Didn't start in the morning? After a motor swap? Bought it dead?etc. Do you have lights/radio/gauges, just no crank? Unless the truck was struck by lightning, I'm guessing the bcm is fine.

Unless someone changed it, you should have a gov-lock style limited slip, not a clutch type. It's possible it's stuck in the "locked" position. If this was the case, it would chirp the inside tire turning either way, though. Maybe pop the wheel& rotor off and check for a locked up caliper or a grenaded parking brake assembly.

you wont need a bigger alternator. If you wire it in factory style to the computer, you will need it tuned to have the fan control turned in the computer. Otherwise the fans will do nothing. You could also wire it through a relay to a toggle switch, or a cheap thermostatic switch on the engine, or just wire the relay trigger wire to key on power, and they'd just run anytime the key is on.

I would put my money on front diff. Wheel bearings are usually more of a clicking noise, especially on turns. T-case can make lots of noises, not usually howling though.

$250?

The CV shafts? All the same.

Awd trucks are different than 4x4. Awd t-case is smaller so the driveshaft is longer, if I remember right.

It might be more to do with age the beating on the truck? Awd seem to be a little harder on hubs than 4x4s. This happened on my denali, I cleaned them and they've been fine for 5 years/10k+ miles.

One or both your front and sensors are dirty. Sometimes you can clean them and be good for a while. Usually it's a sign of the wheel bearing getting chewed up and spitting metal particles onto the sensor magnet.

Offers?