New clutch assembly will not engage


Asked by Jan 03, 2015 at 09:54 PM

Question type: Maintenance & Repair

94 c1500 4.3l 5 speed.  Installed new clutch assembly and a used transmission. Bled the
slave cylinder and clutch still is not engaging. Does someone have an idea of what I could
have missed?

7 Answers


Is the slave cylinder fully extending? Or is it only barely moving?


When putting it all back together did you use an alignment tool? Did transmission slide right on or did you have to force it to get the bolts started on the bell housing?


About slave I'm not sure can't tell cuz its bolted to trans but when tranny was out for a while slave was left extended out but during installation it went back in.alignment tool yes to align friction disc with flywheel n then put pressure plate on bolted and pulled out alignment tool. Didn't really have to force it just wiggled tranny back and forth while pushing towards engine and started bolts in. I don't want to have to drop tranny again.


When engaging the clutch pedal it feels like a normal clutch with good pressure but if I start the truck in 1st gear it will take off as if its not even pressed. And when starting in neutral I cannot put into gear at all. Just grinds

2 out of 2 people think this is helpful.

Sure sounds like a slave cylinder issue. Check clutch fluid level and try bleeding slave again. Also are you sure throw out bearing was installed correctly. This to can cause these issues.


Ya I'm pretty sure it is correct I snapped it into clips with spinning side facing towards clutch. Trans is from a GMC . getrag it is same trans but would it be possible the arm that pivots throwout bearing would have a different angle?


Sounding more and more like a slave cylinder issue.

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