Question about 1998 GMC Sonoma

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Gmc sonoma clutch

Trans. problem. i was goin down the road an came to a stop sign an pushed the clutch in an there was no clutch. got the truck home an looked thru hole in bell housing the clutch is moving but not enough to put the truck into gear wat could the problem be it has the 4.3 vorteck motor no leak on the master cylinder. an i was told that the slave cylinder was in the bell housing an that the throw out bearing is made together can someone plz give me some advice.

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My clutch problem was the cluch pedal the gromet holding clutch piston the pedal was worn an could not shift I replaced the part auto zone or one of those place carry it as an after market part...not sure if this will help

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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SOURCE: gears grinding when trying to shift in a gmc 3500.

some aftermarket masters don't push enough fluid to the slave to disengage the clutch even from the same maker

Posted on Sep 04, 2009

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SOURCE: how do i replace a clutch master cylinder

unbolt and replace the unit. The secret is to bench bleed the unit before installing. Get a short section of hose, connect where the steel line hooks up, route the hose to the the reservior, fill with fluid and pump until bubbles disappear.

somtimes you can never get it working without pre bleeding, just do it, you will be much more successful.

Doc

Posted on Sep 14, 2009

Testimonial: "Thank You very helpfull indeed"

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SOURCE: how does the hyd. line from the clutch master

It is threaded on, on some they are press fit and come with the line when you buy the slave cylinder.

Posted on Nov 12, 2009

Molson02536
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SOURCE: on my fathers 97 gmc sonoma the slave/throwout

Changing the clutch or throwout bearing in a rear wheel drive is one of the easier things to do.
Having it on a lift is nice but it doesn't have to be. The truck needs to be high enough to get under and work. Needs to be on jack stands or blocking sturdy enough to hold the truck steady. Do not use ramps.

Remove the drive shaft, making sure the caps stay on the U joints. remove the shifter from the transmission. Take the slave cylinder off the trans., the stater, and then the transmission from the engine. You will need to support the motor in place so that it doesn't tear up the radiator or the firewall depending on the balance point. Take the trans down by pulling it back about 3 inches. Use a jack or 2 people to do this. Transmission is somewhere around 100 lbs.
On the back of the motor you will see the pressure plate held on to the flywheel with 6 bolts. Take the pressure plate off and the clutch is between the pressure plate and the flywheel. The flywheel may need to be resurfaced or you may just clean it up with coarse sandpaper. The clutch disc goes in one way with the spring assembly facing the rear of the truck. There should be an alignment tool with the clutch kit. The clutch has to be centered on the flywheel. If there is no alignment tool provided, you can center it by making sure the clutch disc is even with the edge of the pressure plate all the way around. Usually, the clutch is just a little bit smaller diameter than the pressure plate.

The throwout bearing is on the shaft coming out of the transmission. Should be held on by a fork that sticks out through the bell housing. After the throwout is replaced and you make sure it has free travel on the shaft reinstall the transmission. You may need to wiggle it a bit to get the splines on the shaft and the ones in the clutch to line up. Make sure the transmission is held straight so that the shaft in the transmission doesn't get bent. Slide the trans. to the motor and onto the alignment pins and bolt in place. Reinstall everything and you are done.
Thank you for using Fixya and since your going to replace the throwout bearing, you might as well replace the clutch since you have the transmission away from the engine to replace the bearing. Good luck and be safe.

Posted on Mar 22, 2010

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