This sounds like the clutch plate and joining parts likely need replacing. the reserve brake fluid canister was empty, i refilled and clutch is working great. may need to bleed lines to master/slave cylinder.
The clutch arm is like a teeter-todder. The clutch arm sits on a pivot point in the transmission bell housing and disengages the clutch by pushing down on the pressure place through a "throw out" bearing when the clutch pedal is pushed down.
This is a safety feature.
When you depress the clutch pedal all the way down the clutch brake stops the input shaft from rotating. This allows the transmission to be put in gear. Never depress the clutch fully ( all the way to the floor) when the truck is moving in any gear. The clutch brake is about the size of a compact disc and cannot stop the input shaft when the truck is moving in gear. This will destroy the clutch brake.
A bad throw out bearing will make noise when the clutch pedal is pushed down.
rotate engine until adjuster is on the bottom through the hole on the bottom of the bell housing,wedge something between the seat and clutch pedal it has to be pushed down to turn the adjuster
The mass of air displaced by the truck creates a vortex which pulls other objects towards it.
If you turn the ignition to the on position, and then press the interlock button, you don't have to press the clutch pedal down to start the truck.
vehicle is still in gear, step on clutch
check clutch slave cylinder
Underneath the car on the drivers side slighty behind the front wheel you should see the clutch cable. on there should be an adjustment so you can back the clutch off or give it more. I believe its a 9/16" or 1/2" nut that spins on the clutch cable to adjust it
The clutch start cancel button will eliminate the need to press the clutch in to start the truck. This is useful in mostly offroad situations where pushing in the clutch to start the truck might allow the truck to roll from a precarious position such as off of a rock or back down a hill. You are starting the truck "in gear" so that there is no jerky movements with engaging the clutch. This works best when in the transfer case is in Low. The front hubs should also be locked. To use when on a steep hill or crawling over rocks: * keep your foot on the brake. * press the clutch start cancel button. * turn the key to start the truck. * as the truck begins to move, ease up on the brake to allow the truck to move forward and start. * as the truck starts apply the accelerator pedal as needed to keep you going and prevent stalling. * If you stall it's OK, just keep using the clutch start cancel button until you are out of the situation
Assuming it has the sixteen speed Eaton box it will have a twin plate clutch. Measure the gap from the between the release bearing and the front of the gearbox, it should be 13mm, i use a 1/2" ext. To adjust it you need to turn the engine until you can see a removable locking plate held in with a 9/16" headed bolt. remove this plate and with the clutch pushed down you can turn the inner ring, there is a proper tool but you can do it with a small strong bar. Remeasure it with the pedal released, turn the ring clockwise to decrease the gap. When the locking tab is getting to point where is almost proud of the castellations on the inner ring it is time to change the clutch. If it has the zf gearbox there is no adjustment.