Question about GMC Sierra
Posted by Anonymous on
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Posted on Jan 02, 2017
Admitting a lack of familiarity with your car, this is often caused by an improper adjustment of the transition point from one gear (or clutch) to another.
1st is still not disengaged when 2nd is engaging but this is normally an adjustable point.
I've also seen this caused by the use (or adding) of the wrong fluid; the beasts are fussy about that sometimes.
Posted on Jun 19, 2008
I would try a flush. If its set up like my 96, and it likely is, changing the trasmission gasket and filter will be difficult. Mine has a medal plug on the bottom and takes an allen wrench, and possibly a breaker bar. If you take out this plug, drain, flush then refill via the dipstick tube and a funnel, it may help. You may need to do this a couple of times due to fluid still in the torque converter, pan, etc.
Lucas is good stuff, I would add it again when I was done. The tranny fluid should be pink, mine looked like used oil black before I flushed it.
Also, when adding the new fluid, shift slowly up and down through all of the gears to lube well and check your fluid levels after 100 miles or so, as sometimes a bubble will form and make it look full....then not after it pops.
Posted on Dec 23, 2008
The clutch bearing is supposed to have a groove on the inside where it slides on the shaft That groove is supposed to have a heavy grease applied to it to prevent the bearing running dry on the collar it slides on.Regardless of your driving style, that grease is intended to remain there for the life of the clutch, (generally every clutch I have ever replaced still had some remaining lube there unless the bearing itself failed from a material defect which caused it to overheat and cause that grease to then run out of the retaining groove) I'm not there and can't see the old parts, but in my opinion the first clutch may have failed partially because of your lack of skill in using a stick shift vehicle but the second failure obviously is not your fault if the information you have posted is correct.
Posted on Apr 17, 2009
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