shifting hard

Corey · February 19, 2009, 03:09:11 AM

I recently bought a 99 gmc sierra and yesterday i noticed it started shifting hard into 2nd gear and a little bit into 3rd, and will clunk sometimes (sounds like the u joint) I checked the fluid and its all good and doesnt smell burnt or anything. I dont even know where to start..... any ideas?

J.C. · February 19, 2009, 03:23:23 AM

tv cable, body lift on it? linkage might be outta whack on it. gov stuck? what trans? 4l60e?

Corey · February 19, 2009, 03:38:28 AM

its all stock, if the cable was messed up wouldnt my other gears be off too? and yea its a 4l60e

BadF-150 · February 19, 2009, 03:44:18 AM

try changing the filter because it may be getting plugged up and just bad fluid in general

J.C. · February 19, 2009, 03:46:29 AM

good point. i was thinking it was older i guess i dunno

Corey · February 19, 2009, 03:52:21 AM

Quote from: Crazy4x4StepSide on February 19, 2009, 03:44:18 AM
try changing the filter because it may be getting plugged up and just bad fluid in general

im gonna give that a shot soon

J.C. · February 19, 2009, 04:06:16 AM

ask mudbuster.

Corey · February 23, 2009, 12:55:29 AM

well i replaced the tranny filter and u joints... still doing it also its vibrating pretty bad at about 55

4x4ZR2 · February 23, 2009, 08:06:33 PM

my brothers truck does the same thing....same truck. hes got a warrenty so geuss it goes to the shop when he gets back from cali.

Disturban · February 23, 2009, 08:46:57 PM

Quote from: Corey on February 23, 2009, 12:55:29 AM
well i replaced the tranny filter and u joints... still doing it also its vibrating pretty bad at about 55

Vibrating is not good...last time I had a tranny doing that it turned out to be a crack in the TQ converter.

johnolia · February 23, 2009, 08:48:30 PM

there may be a rebuild in your future thats all i can really say without looking inside the trans

Corey · February 23, 2009, 11:18:58 PM

well i had the tranny guy at work drive it and hes gonna tear it apart for me and check it out.

Corey · February 25, 2009, 07:30:03 PM

well its sittin up at work right now gettin worked on hopefully its nothing too major

mlankton · March 01, 2009, 04:46:36 PM

A friend of mine had a 96' silverado and his will periodically clunk into third gear. He replaced all the u joints checked tranny mounts etc. Then he took it In to a tranny shop they went through the whole thing and charged him 700 dollars and it still does it. It's been doing this for about 5 years and no problems just turn up the radio. LOL the vibration is probably a different story. I would check the driveshaft for a bent conditon or dents missing balancing weights etc.

Corey · March 01, 2009, 07:38:23 PM

got it fixed the other day.. it was the spacer plate.. dont really know how it works or anything but the little ball that falls into the hole had reamed itself out so it created its own shift kit.. he fixed it for dirt cheap so im happy