why would you want to turn it over? you can use jacks, a light and a creeper to look at the bottom, less expensive too!
The 1990 K1500 pickup truck parking brake is equipped with a adjustment bolt. Turn the adjustment bolt in or out to adjust the parking brake.
Sounds like a bad starter solenoid
the bass button on radio
what is wrong when the truck just turn over and want start.
Your truck will not turn over when the key is turned if the battery is dead, the ignition switch has failed, or the starter is bad. All can be readily repaired at a local mechanic or dealership.
Check your fuel filter
your engine is seized man. start looking for a new engine.
The Chevrolet K1500 pickup truck flasher relay switch can be found beneath the drivers side dashboard. The flasher relay switch will be above the brake pedal.
Bad Starter....
Does it turn over? Does it have: fuel spark compression?
Mybe your starter died. They are usually about $50
Check fuel Check spark