Stephen Morrison

This seems to be fixed. Removed the return line from the resv capped the resv. Started truck and pumped all the fluid through. Took about 1 to 2 seconds. Removed return line from gear box and used compressed air to confirm line and cooler are clear. Reconnected and bled with wheels off the ground.

I have done the normal steps that don't require special tooling like a pressure gauge. Installed new parts, lifted wheels. Turned lock to lock to get air out. Lower and drive. I think replacing the lines is a good idea, maybe swollen and not allowing enough fluid through.

It's 4x4 no rack it's a normal steering gear box.

Belt looks good, no squealing. Only a little power steering growl when lock to lock

No hydro boost, a hose could make sense but I see the fluid moving as we turn the wheel back and forth. We purged the air with the truck off.

2003 Silverado 4x4 ext cab short box We have replaced the pump twice and the power steering gear. Truck seems to drive fine but when stopped there is basically no power steering. No excessive whine, with weight off the front tires it turns back and forth fine. The last pump was new with resv. Truck doesn't have any special options. No sensors on the pump or box. This should be a simple thing but I am stumped.