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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Transmission Problems
503 messages, Last post on Nov 10, 2009 at 5:28 PM
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hello, I have a 2006 gmc 2500hd with the duramax and allison. Took it two the shop today and was not happy. Truck only has 45k miles on it, which I consider hardly broken in. To make a long story short, it first turns out all 3 transmission lines to the cooler are leaking at the cooler. Is this possible for a truck only 2 years old and with 45k miles. Being ALL 3 lines went bad, doesn't it seem a bit sketchy??? Second, they had to replace a glow plug and when they got done with that, it still had a code problem. The truck had a recall on the plugs this past year that I had taking care of. Could the recall not have been in time and have caused damage to the engine???? I'm VERY upset with this truck so far, as I have had owned many gm trucks but never have had so many problems. I don't even really use this truck as a work truck as I did with my others. any one out there with any information I may find amusing about the problems I'm having?? ss
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Replying to: psuscaper (Jan 25, 2008 3:32 pm)  hi-way speeds. I drove Fords for 30 years,, Really enjoyed my Chev tillI started to have all of these little issues w/ it. I mean who would produce a vehicle and put it on the market w/ faulty lines to the transmission...??? 
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I've got a 06 2500hd duramax that does not like the cold -40 below. yesterday 020508 my trans went into shift inhibit again. it is in the shop again the first time cost gmc a new tranny. have not heard yet about this time any other victims out there?
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Recent professional rebuilt my automatic Turbo 400 tranny in my 1985 C30 1 ton Dually Crewcab pickup that has a 454 ci engine. Problem occurs between 55-65 mph after driving long distance on freeway for aproximately 1-2 hours. Tranny acts like it goes into neutral (similiar to pushing a clutch in on a manual transmission). Tranny re-engages once the vehicle slows down under 55 with foot off gas pedal or if you floor the gas pedal. Above 65 mph and below 55 the tranny stays in gear and shifts properly. It down shifts properly to pass cars or to climb a hill. The professional has went through the tranny twice, had new torque converter rebuilt, states everything looks good and is not sure what is causing the problem. Need expert help on this strange tranny problem. Does anyone have a solution?
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Replying to: steve6568 (Nov 05, 2007 7:13 pm) Check to make sure that the shift linkage is adjusted correctly. There are detents in the column shifter for each gear, and there are definite "notches" on the shifter arm on the trans for Park, Reverse, Neutral, Drive, 2, and 1. If your column shifter says you are in Drive, but the trans shift arm is not all the way in Drive, you can have weird problems. Disconnect the linkage at the trans. Move the trans shift arm into Drive - it will click firmly into place. Move the column shifter into drive, if necessary have someone hold it exactly in place. If necessary, adjust the linkage such that Drive on the column and Drive on the trans shift arm are aligned. Don't align Park with Park, because when you shift the trans into Drive it may be slightly misaligned causing strange shifting behavior. Also, the shift linkage may be sloppy from age on a 1985. I'm not sure, but there may be some shift linkage bushings & etc. that can be replaced to tighten everything up and make aligning the column shifter and trans shift arm more precise. Is that a clear explanation? The mechanic might have done this but it doesn't hurt to check, it's easy, quick, and free. Good luck. 1offroader |
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| I have a 04 GMC Sierra 1500, Z71, with the 5.3 V8. I bought the truck 7 months ago with 31k miles. Trans shifted perfect. Now with a little over 35k miles, the transmission upshifts really hard from 1st to 2nd. Also have a clunk from 2nd to 3rd. Brought truck into GM Dealer and of course they said they could not find to problem. GM told me that they were going to extend my drivetrain warranty to 7yrs or 70k miles. Has been over 3 months and still trying to get GM to send me the paperwork. Just today when I was changing my oil, and I noticed that the transmission cooler lines were soaked with fluid. Checked fluid level and was a quart low. Anyone have any ideas why my cooler lines would be leaking fluid? | |
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I don't know about the cooler lines, but I have a 2006 1/2 truck that was shifting hard into 2nd and the check engine light would come on. They had to replace transmission at 28000. This transmission had to be repaired at 17000 also. The dealer said that my transmission was full of metal shavings on all of the clutches. |
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| Saturday morning when I cranked up my 99 Chevy K1500 it lunged about a foot and half. It was in park but still it lunged forward. Hasn't done that again but it is making a clicking sound like a card in bicycle spokes when its in 1st and 2nd gears. When it shifts out to 3rd and 4th the noise quits. This is a 4 speed auto tranny. Is it dying on me? What could be causing the clicking noise. It's like something laying on the teeth on a gear. | |
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Replying to: psuscaper (Jan 25, 2008 3:32 pm) Whats up with your glow plugs? |
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