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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Transmission Problems
336 messages, Last post on Aug 24, 2008 at 2:17 PM
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| My 2004 GMC Sierra 2500HD 4 x 4 loses power when my transmission temp gets between 180-200 degrees. It only gets hot on the hot summer days or when I tow my boat. There is an unusual noise(higher RPM?) in the transmission when I take off after sitting a controlled intersection. I get my vehicle serviced on a regular basis. I have yet to take it into a dealer..any ideas? | |
Did u get any replies b-cause that is similar to what or 1998 Sierra is doing
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Replying to: tdscriner (Jul 11, 2007 5:58 am) |
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| When I first start out in the morning the trans make a clunking sound while shifting from 2nd to 3rd. Most times it makes the sound 1-2 times. After that it shifts hard and jerks from 2-3. Ive had it back at the dealer 3 times already and it only has 2400 miles. The 1st time they replaced a torque solonoid valve- didnt help. Since then they said they can't find a problem. Does anyone have a similar issue or suggestion? That's what I get for leaving Ford. | |
| I have a 2007 crew cab that the transmission has been out twice in the first 28000 miles. the last problem was that it would shift real hard after it warmed up. The shop said that it was full of metal shavings. If this transmission goes out again then gm will get it back and I will go to Toyota or something else. | |
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Replying to: mlemoine1 (May 05, 2007 6:36 pm) This 6 speed has been the WORST example of a half baked, defect laden, miserable shifting, banging, clanking, confused shifting transmission I have ever had the misfortune and mistake of owning. It is actually an adaptive learning transmission that is almost entirely computer controlled. If it were any other company, that would not be a problem. However, GM clearly had not the ability or brains to design working software/firmware for this complex machine. They acknowledged to me they are stumped by it and hope to eventually figure out how to rewrite the software. Lovely. They offered me a hope and a prayer for cold comfort. And what do I do today? Any low speed shift is accompanied by a banging in the rear. Hi speed downshift tries many different gears before the computer finally selects one gear to use. What a mess!!!!! Additionally, you never know which gear it will select and how jolting or punishing the shift will be. PLUS....when coming to a stop, the computer gets confused and then speeds up the engine for a moment generating way extra torque which causes the downshift into first gear to shoot your forward as if you were just bumped in the rear by another vehicle. This is NO exaggeration....straight objective fact. GM has NO CLUE or technical ability to correct this major problem. They are hopeless and helpless to produce or service this transmission. Dealers I have gone to are totally stymied and confused by these problems which are all routinely reproduceable. This is but one area of problems I am experiencing with this TROUBLE TRUCK. It is worse than a lemon. It is a production GMC truck which has proven to be a miserable excuse for a truck that has caused me nothing but headaches, weeks of lost service and a serious distrust for the treachery and failures of GM in taking proper care of a customer. GM is a promise broken and a commitment never honored. |
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Replying to: skytop1 (Jul 18, 2007 5:33 pm) Does anyone have this truck? Does it have transmission problems? mlemoine - what other trucks did you consider and why did you make the choice you did?
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i got the tranny fixed in my 07 silverado(warrnty) and it is way different and great. 6.0 w/heavy duty tranny, vortec/max package, LTZ pkg.
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Has anyone else had any problems with a 2005 silverado transmission?? Mine went out yesterday at 44K miles and just over 2.5 years old. Just my luck that it happens after the 36K warranty has expired. Has anyone had any experience with GM's Goodwill policy \ Secret Warranty program? I'm hoping they will give me some sort of assistance in fixing this as I have owned 3 other silverados, all of which were driven to at least 130K without any major problems aside from routine repairs. Thoughts or recomendations for proceding with GM???
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