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Chevy Silverado and GMC Sierra Transmission Problems

506 messages,  Last post on Dec 01, 2009 at 1:57 PM

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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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#182 of 506
Re: 07 transmission [bumperdude] by hotsaucebill
Dec 02, 2007 (2:30 pm)
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Replying to: bumperdude (Dec 02, 2007 1:01 pm)

thanks bumperdude for the post. I'll let you know how this all turns out. so far, no freewheeling. I'm thinking something with the computer, as it cleared up for a while. miss the good old days in a way....without the software!
#183 of 506
Re: 07 transmission [hotsaucebill] by hotsaucebill
Dec 03, 2007 (1:47 pm)
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Replying to: hotsaucebill (Dec 02, 2007 2:30 pm)

Just got back from the dealer. Turns out a transponder that sends transmission fluid pressure to the ECM went out of whack. GM had a TSB on the problem, so they hooked it up to the computer and reset every thing. Time will tell if it happens again. According to them, this was the first time they had seen this problem at their service department. Obviously, it wasn't the first time the boys in Detroit had heard about it. All is well for now. Love my truck!
#184 of 506
Re: 1998 1500 5-speed issue! [beaverman] by 1offroader
Dec 03, 2007 (8:25 pm)
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Replying to: beaverman (Nov 17, 2007 6:48 pm)

beaverman
 
The idiot at the car lot was right. The slave cylinder is bad. Near the clutch actuating arm is a smaller clutch slave cylinder. There is a piston inside, and it has seals on it that can go bad, just like on a brake wheel cylinder. Sometimes they can be honed out and rebuilt with new seals, sometimes not. It is a common problem.
 
It could also be the clutch master cylinder, but check the slave first. It is smaller, easier, and cheaper to replace than the master.
 
Sometimes pumping the clutch pedal works, just like pumping the brake pedal when the brake master cylinder or wheel cylinder goes bad. But that's just a temporary solution until you can get it home and replace it.
 
1offroader
#185 of 506
What was your problem by tinamatt
Dec 05, 2007 (7:48 am)
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I have an '07 silverado with a scrubbing noise in the motor. Took it to the dealership and was told it was a vibration that could not be fixed. Any thoughts?
#186 of 506
Re: What was your problem [tinamatt] by obyone
Dec 05, 2007 (9:04 am)
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Replying to: tinamatt (Dec 05, 2007 7:48 am)

Like with a doctor. If you don't like the first prognosis, get a second opinion from another dealer.
#187 of 506
transmission issue by vetteboy
Dec 04, 2007 (5:24 pm)
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I have an old k1500 plow truck that was perfectly fine three weeks ago until I got a foot of snow today and I went to plow and had no drive or reverse gears. The fluid is fine. Is it possible that the cable between the shifter and the tranny just broke? If so is there a quick fix im snowed in...
#188 of 506
Re: What was your problem [tinamatt] by bumperdude
Dec 05, 2007 (11:27 pm)
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Replying to: tinamatt (Dec 05, 2007 7:48 am)

i had nothing like that but the answer that they gave is unacceptable. ask to speak to the service manager.
#189 of 506
2500 HD allison transmission failure by mprevost
Dec 07, 2007 (10:08 am)
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I have a 2002 Duramax w/ the allison 5 speed automatic transmission. I have 116,000 miles on it now. Replaced the transfer case 2 months ago when it burned up. The tranny now slips out of gear every 1/2 mile or so, usually between 4th and 5th gear. Had it in to the GM certified mechanic twice, 570 dollars later they can't find the problem and recommend a new tranny (rebuild). At their price and failure to fix it after 2 tries I took it to a transmission place. They put in a rebuild Allison tranny and guess what?, it still slips out of gear! Someone suggested perhaps it is the 4x4 actuator switch. It would appear that it is not the tranny itself but no one seems to be able to figure these allisons out. Any thoughts or suggestions?
#190 of 506
Chevy transmission by luvtrucks
Dec 07, 2007 (5:17 am)
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Hi,
Will a transmission fluid leak affect only the high gear. It will pull in the lower gears up to about 35mph, but not in the high gear. It was a quart low on fluid and has been leaking what we thought was oil?
#191 of 506
Range Shift Inhibited w/Engine Light by rainman1289
Dec 14, 2007 (8:30 pm)
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'03 2500HD diesel, won't to into gear, reverse or drive. Any ideas?

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