Last post on Dec 07, 2013 at 6:17 PM
You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Transmission, Truck
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#1379 of 1523 Re: Shifting issue when transmission is cold [jbickham]
Dec 04, 2012 (6:52 pm)
It sounds by the symptoms you are describing you have a 6 speed transmission and not the 4 speed. If you have the 5.3 motor then you do indeed have the six speed. The hesitation between 2 to 3 seems to be "common" among the model years that have he new six speed. The good news is it happens only when cold. In addition, it's a software issue and not a mechanical one. It doesn't seem to affect the longevity at this time.
I am an owner of a 2011 Silverado and am no way affiliated with GM.
Don't worry about it and enjoy your new truck!
#1380 of 1523 Re: Shifting issue when transmission is cold [chuck1]
Dec 04, 2012 (7:05 pm)
Yes it is the 5.3 with 6 speed. It does it ONLY when cold. It performes flawlessly when at normal temp. I hope you are right. I wen t through transmission problems in 2003 with a brand new car we bought and don't want to go through that ever again. I was trying to choose between a Tundra and Sierra when i bought this...i dont want to regret going with the GMC...7k cheaper for the GMC, better warranty and who needs to tow a space shuttle anyways? thanks for the info!
#1381 of 1523 Re: Shifting issue when transmission is cold [chuck1]
Dec 06, 2012 (1:59 pm)
Well, i just spoke with the service guy at the dealership. They finally got it to mess up. He said they have been on the phone with GM multiple times today and have no clue what caused it. He says it may be the selonoid or valve body but they arent sure, it hasn't created any trouble codes. They have compared data with other trucks and nothing seems out wack. He says there are no tech bulletins out about this issue. He referred to it as "flaring" and not slipping, more of an extended shift. So i guess now i just wait......just my luck
#1382 of 1523 Re: Shifting issue when transmission is cold [jbickham]
Dec 06, 2012 (4:35 pm)
They must be the only dealership that doesn't know what it is. Maybe they should look it up on the Internet. It's a software issue, it's been said elsewhere on the Internet that GM does indeed know that there is an issue.
Run far away and find a new dealer.
#1383 of 1523 Re: Shifting issue when transmission is cold [chuck1]
Dec 06, 2012 (5:01 pm)
Well what they told me and the truth may be two different things.
#1384 of 1523 Re: Shifting issue when transmission is cold [jbickham]
Dec 06, 2012 (9:56 pm)
hey jbickham, I have a 2012 silverado 5.3L 6 speed 4x4 Z71. my truck had the same issue. At 5k i finally had enough and took it in. Dealer rebuilt the transmission and said that 2-6 seloids were damage and the valve body was scored. Take it back and have them ispect the valve body and selonoids. After it was rebuilt i lost 3 gear towing my jet skies. I took it back and had the transmission replaced around 8k. They know the have a problem with these transmissions but wont do nothing about it unless you push the issue. Dont take these B.S answer and have them fix it. I ended up calling the chevy customers assistance to resolve the issue.
#1385 of 1523 Re: Shifting issue when transmission is cold [galvezfj]
Dec 07, 2012 (4:54 am)
That is the exact truck i have. The truck is still at the dealership. Ive dealt with transmission issues in a new Mazda we bought in 2003 and learned that being nice gets you nowhere fast. We ended up having that vehicle replaced under the lemon law. Im more than ready to battle with these folks. I just really hate that this is going on with my truck. I absolutely love it. Thanks for the info.
#1386 of 1523 Re: Shifting issue when transmission is cold [galvezfj]
Dec 07, 2012 (6:04 am)
Well, exact other than mine is a Sierra...but same thing. Did the transmission replacement fix your problem? And i'm curious to know if anything is different internally in the new vs the old transmission.
#1387 of 1523 Re: 7th time to the dealer? [Lady3bglover]
Dec 07, 2012 (6:24 am)
Lady3bglover, How do you register your vehicle online with GM?
#1388 of 1523 Re: Shifting issue when transmission is cold [jbickham]
Dec 07, 2012 (11:01 am)
after the transmission was replaced it has worked good. Its been about 5k since the replacement. My truck now has 12k on it and it has been working good since then. I will know for sure once the summer comes again because thats when i tow around my jet skies. the way i explained it to the tech was it felt like the clutch was staying engaged for about 3-5 sec longer than it should. Bad enough if i gave it gas i was reving the engine and not moving.