Question about GMC Sierra
Will go in gear for a short time , then no movement in any gear. fluid at proper level. start after stop to get gas , worked fine before no sign of problem then.
Sounds as if the tranny needs an inspection as you've checked fluid level ,might just be a sensor but if high mileage i'd say may need an overhaul , take to a tranny specialist who will give a proper diagnosis
Posted on May 13, 2014
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Posted on Jan 02, 2017
Sounds like you have yourself a bad shift solenoid pack this is mounted on the front of the transmission under a thick rubber boot and has an 8 or 10mm bolt holding a plug into it, these usually fail hot as it is an electronically controlled solenoid and there are tiny little springs and magnets inside that can stick also while you are in there do yourself a favor and change the two speed sensors on the transmission they are about $22 each and can also cause the problem you are explaining. the shift solenoid pack is about $120 on ebay and some sellers actually sell them along with the input and output speed sensors you may try changing those first and see if it solves it but i have a feeling your solenoid pack is failing also when you change these parts it may take the computer a few trips to relearn shift points but you'll know it fixed it right off the bat.. please rate and good luck -jeff
Posted on Sep 01, 2008
I believe it has a screen and filter. You might have a trans problem period. Your synchronizers could be warped and the clutch cannot hold a grip. And yes, automatics have clutches. Im assuming you have automatic.
the flywheel, hub, bearing, and synchronizers have to be in perfect form to grip gears, if it's slipping out of gear which is what your fading out description means to me, than you have a trans problem or your not getting proper lubrication. Lot of the times, in a car like that, it is a common tale to tell.
hope you get it fixed.
www.car-parts.com is a good site to go for used parts for your car and others. cheap and effective. goodluck.
Posted on Feb 16, 2009
1st thing to do is test the system for codes, the problem is most likely a failed or stuck shift solenoid indside the trans, have you ever serviced the trans, sometimes a fluid and filter cahnge will cure these kinds of issues.
Posted on Nov 02, 2008
SOURCE: overdrive will not engage
Check the OD solenoid on top of the tranny (drverside) apply 12V + to it and take for a test run if she works then you know the problem may be the OD relay, temp switch or its wiring. I had just simply rewired a new OD switch.
Please let me know if this help.
Posted on Jun 30, 2010
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