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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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#666 of 1521 ALLISON SHIFTING WHEN COLD ..
Jul 16, 2010 (1:34 pm)
MY 2001 Sierra with less than 50k miles (duramax diesel) has had shifting problems for the past 5 yrs now, mostly when its cold out (below 50 degrees when it happens) started 3 yrs ago during the cold and got a lot worse quickly..
start it up, let it warm up, drop it in drive and when it makes the first shift (1-2) it goes into neutral! has happened so many times. or the other situation when driving and making a SLIGHT turn,(usually left) take your foot off the throttle and it drops agian into neutral sometimes it recovers and continues, sometimes not. if it drops out, it sits either waiting for you to recycle the ignition (if you do it either wont respond, or drops into 1st and stays there, or third and stays there) or if you stand on the throttle waiting for it to shift, it goes BANG and back into gear. enough to bark the tires. once i drove it 40 miles at 30mph with the engine pegged just to warm it up! if the temp is hovering between 40 and 50 this happens a lot, if its colder forget it youre not going places. right now the service engine light is on and has been for over a year. 2 NSBU switches no fix, allison dealer wants $1500 just to diagnose the problem which they claim may be electrical in nature. personally i am waiting for this truck to be stolen, or a tree to fall on it , or recall, or Jesus to show up :>) im not paying for this any more! corrosion on the brakes are another issue and all the lines under are sh^t as well as the frame.. 50k for a POS
GMC! cant sell it or trade it.. stuck..
#667 of 1521 Re: Shifting problems. [byancey]
Jul 17, 2010 (1:01 pm)
i've been having the same problem, i took it to aamco and they said it was my radio which was tied into the trans fuse, rewiring it stopped it for awhile but it started up again what part did you need to fix this annoying problem, please let me know thanks.
#668 of 1521 Re: transmission [gmcustsvc]
Jul 18, 2010 (8:08 am)
i contacted the dealer on this problem and they said there is nothing wrong. I asked if i would start losing gears if it did a fluid and filter. He said,"thats 1000.00 mile oil in there you shouldnt have to touch it yet." On the other side i have a family member that runs a reputable repair shop and he said at this mileage the oil is already dark, and instead of doing f/f, just do a flush. Any help out there?
#669 of 1521 Re: transmission [jwttitze80912]
Jul 18, 2010 (7:42 pm)
I would do a drain and replace the trans filter and refill with new trans fluid. A complete flush may cause more problems.
#670 of 1521 Re: transmission [jwttitze80912]
Jul 19, 2010 (11:02 am)
Unfortunately, I cannot diagnose your vehicle over the internet. Doing a flush won't hurt your system especially if it needs one to be done. Thank you,
Mariah GM Customer Service
#671 of 1521 Transmission Leak 02 silverado
Aug 03, 2010 (5:40 pm)
Im leaking really bad between the transfer case and transmission..... Just wondering what it should cost to get the seal replaced, IF thats what it is?
#672 of 1521 transmission, maybe?
Aug 25, 2010 (11:07 am)
Three weeks ago, we purchased a new 2010 Chevy Silverado 1500--4x4. It has 1500 miles on it. We had the windows tinted today (approx. 60 miles from home), and the gear shift won't budge! Of course, it is under warranty, but I am wondering if this is a common problem. A co-worker of mine had a brand new Chevy Avalanche, and the transmission went out at 8000 miles.
#673 of 1521 Re: transmission, maybe? [ekom]
Aug 25, 2010 (4:56 pm)
it is tough to say. mine went out at 7,000. and i have heard of a couple of others. but mine is the new body 2007 and a lot of trannys have been made in that time. It has 56K on it now. I pull a boat(22 ft), 4-wheeler trailer(4 4-wheelers) and have used it to pull a loaded car dolly several times. it is strong as an ox. keep-it. -- chuck
Sep 04, 2010 (1:14 pm)
i just had my 4l60e trany rebuilt and i put bout 500 miles on it and now its leaking pushing trany fluid out the overflow hose i took the pan off to see if the filter had come out and i didnt i duno what it could be does antbody have n e ideas
#675 of 1521 Re: 4l60e problems [soccermanjbc]
Sep 06, 2010 (11:15 pm)
Hi, I Had The Same Problem With My 1994 Chevy 4L60E And It Was The Brake Switch Not Letting The Lockup Converter Work Causing It To Over Heat On Longer Trips.It Will Run Hotter Than Normal. So Check To See If Your Lockup Is Working, If Not Then Replace The Brake Switch On Your Brake Pedal. If It Is Bad It Will Sometimes Not Let Your Cruise Work Neither. "Hope This Helps"