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Chevy Silverado and GMC Sierra Transmission Problems

568 messages,  Last post on Mar 10, 2010 at 2:04 PM

You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Transmission, Truck


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#398 of 568
Re: Transmission problem [framemaker] by Whiskeynick
Jan 31, 2009 (5:19 pm)
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Replying to: framemaker (Sep 25, 2008 5:12 pm)

Did replacing that solenoid fix it? I have a 97 Z71 That will only use 3rd and reverse. It has a po785 code. I replaced the 2-3 solenoid today and it did not make a difference.
#399 of 568
Re: 03 tranny questions [03chevyguy] by Whiskeynick
Jan 31, 2009 (6:11 pm)
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Replying to: 03chevyguy (Jan 04, 2008 3:09 pm)

I have a similar problem with my 97 Z71. I drove it for 100 miles the other day got to stop sign heard a loud clunk, and the truck would only use 3rd. What did you find out about your problem?
#400 of 568
trans problems by beaver_lf65
Feb 05, 2009 (5:15 pm)
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i recently towed my car from wisconsin to missouri i got most of the way here and the trans started to make noise so i checked and it was out of fluid.. it appeared to come out of the transfer case main seal is but i didn't think that they shared fluid do they? also now my second gear isn't working and i think also 4th gear. will a flush help anything or should i just rebuild the trans?
#401 of 568
700r4 by zhood
Feb 05, 2009 (9:29 pm)
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i have a 90 pickup it holds first long and then shifts hard at 3500 rpm with reg driveing and it makes roaring wineing nois when going down the road like it comes from the converter i got the tranny at the junk yard and installed it my self not a mechanic i am a mason please help some on at napa said some thing about a tv cabel i do not know please help
#402 of 568
Re: trans problems [beaver_lf65] by jbh40
Feb 06, 2009 (7:27 am)
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Replying to: beaver_lf65 (Feb 05, 2009 5:15 pm)

The transfer case has a input shaft seal that is bad, pull the transfer case and replace the seal.the fluid in the transmission is seperate from the transfer but when this seal goes bad it lets all the fluid from the transmission go into the tranfer case.Your transmission will need to be rebuilt, it sounds like the band is burned out. you will not have second gear or overdrive when the band is burned up. HOPE THIS HELPS.
#403 of 568
Re: chevy '02 2500 hd hot tranny ? [jneal] by Lady3bglover
Feb 06, 2009 (2:29 pm)
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Replying to: jneal (Sep 03, 2006 11:09 pm)

We all know Chevy/Gm isn't known for their transmission production, unless it's on a performance vehicle. After #3 on my '02 Silverado (2 were replaced by GM), I've upgraded to a performance trans with a Vig 3400 stall and Servos.
 
I agree... get the cooler. B&M has a nice set up and it's relatively easy to install.
#404 of 568
Re: Start in 3rd gear [byancey] by byancey
Feb 08, 2009 (6:36 am)
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Replying to: byancey (Jan 13, 2009 6:24 pm)

Found out it's the ignition switch (not the key tumbler) that was bad. Seems it supplies 12v to the trans and when it would lose power, it went to "limp-home" mode. $30 switch, $20 labor, and problem fixed. I looked at the old switch and it had carbon on the contacts. Mechanic also said it could cause the electric fuel pump to quit.....too much computer stuff nowdays....
 
BY
#405 of 568
2008 sierra 1500 V-max funky throttle/trans by combine_dude
Feb 08, 2009 (7:05 pm)
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2008 sierra 4X4 crew cab 6.0 V-max trailering pkg. About 1500 miles now. I drive like an old lady most of the time (I have to use a hand brake control-so kinda hard to take an agressive drive as bad as I may want to) but I do get on it now and then on the straights. As compared to my 2002 Chev 2500HD 6.0 this new one acts like it has a rubber band in the throttle linkage (I know it doesn't have a linkage but this description paints the best picture for you). The response you get doesn't seem porporsional to the amount of pedal movement you apply.You can move out easy, then press a little to pick it up a bit, and get not much response, so then a little more, and sometimes a little more before you get much, then it comes alive and keeps pulling hard way beyond where you would expect it to level out (almost like a turbo lag). Then you gotta get way out of it to level out at a reasonable speed. This seems strange. Is it just the way drive by wire is? Not a big issue just wondering. A bigger concern is when I slow down (pretty slow) to make a turn, like into my driveway (100 yds long) and then press on the gas slightly to take me up the driveway there is a slack point as if you slipped it into neutral for a split second before it starts to go again. I believe it is more prevalent when the pick-up is cold. I'm a newby here. I read all 400 or so tranny entries-pretty interesting. Lots of good heads out there! My AFM 6.0 has me a little scared after reading some of the comments in that section. I would invite any of you who really KNOW (not just strong opinions) GM engines to put my mind at ease. I was "Ford to the core" from age 12 but (after openning my mind enough to consider all brands) starting in 2002 have bought 5 GMCs and 2 Chevys and liked them all. Hey, I'm also pretty computer/internet challenged. Where'd that car picture next to my message come from? Please take it easy on this old farmer in your response!
#406 of 568
2003 Silverado Transmission Problem by madman4
Feb 11, 2009 (9:47 pm)
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I own an 03 Chev Silverado 2500HD Duramax w/ an Allison transmission. My problem started not long ago as a hard shift between 2nd and 3rd. I decided to change the fluid, filter, and give it a trany flush. Since then the truck has gone into limp mode twice at highway speeds, not good. It does this when everything is good and warm, when the trany is cold everything works properly. I would really like to get an idea of possible solutions. If they don't involve doing a rebuild on the trany I would like to do the work my self.
#407 of 568
What can I do ? by levans498
Feb 05, 2009 (6:57 am)
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