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Chevy Silverado and GMC Sierra Transmission Problems

502 messages,  Last post on Nov 08, 2009 at 8:49 AM

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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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#159 of 502
Re: 07 transmission [bumperdude] by lroshau
Oct 05, 2007 (6:05 am)
Reply

Replying to: bumperdude (Jul 19, 2007 3:11 pm)

Dude,
thats the same truck i got.
What kind of problems were
you having.
Mine does the jecking thing
going uphill and feels like someone hit
me at lights
#160 of 502
Re: Brand new '07 Silverado w/ transmission leak [hardwaregirl] by lroshau
Oct 05, 2007 (6:14 am)
Reply

Replying to: hardwaregirl (Sep 19, 2007 3:44 pm)

Yes,
i bought my truck 4 door 1500 vortex max on july 5th
notice the leak a week later and they also said it
was the front trans pump seal from a nick on the torque converter shaft. do you have any other trouble with your truck jerking or bucking going up hill?
#161 of 502
Re: Chevy Silverado 1500 4.8 Transmission fix [lroshau] by bumperdude
Oct 06, 2007 (11:26 am)
Reply

Replying to: lroshau (Oct 05, 2007 5:50 am)

GM did replace the tranny of my VORTEC MAX at 7,000 miles, mine never jerked it just felt like it went into a "freewheel mode". the tranny temp went way up.
#162 of 502
Re: Brand new '07 Silverado w/ transmission leak [1offroader] by mdsxs4
Oct 06, 2007 (2:50 pm)
Reply

Replying to: 1offroader (Sep 29, 2007 8:10 am)

It is actually a 2006 1/2. It is the old body style 2007. The first time the transmission lost all but 1st and reverse. the second time the transmission would shift so hard that the rear end would bang. I was afraid that it would ruin the rear end. When the dealer took it apart they said that it was full of metal shavings. I drive the truck for work on the highway a average of 50,000 to 60,000 miles a year but they are all highway miles and I don't pull a trailer.
#163 of 502
You folks are making me nervous. by 07chevy1500lt2
Oct 08, 2007 (6:45 pm)
Reply
All you folks with these 2007 1500 tranny problems..tell me a liitle more about what you have. Are they 4x4's, what size motors, what kind of driving are you doing, what were the remedies, did you follow break in procedures correctly? The reason I ask is I just purchased a 2007 with the new body style, it has the 5.3, LT2 package, 4x2, HD towing. I have only owned mine for 2 days now but I must say..I LOVE MY NEW TRUCK!!! To me this new Chevy is the best thing since sliced bread. The ride is far better than ANY truck I drove to include all manufacturers except Nissan. The interior in the LT2 with Leather is far nicer to anyone else and the 5.3 has plenty of power and better fuel economy than the smaller 4.8. So please tell me a little more about your rigs and how you drive em and the reasons for the failures. Thanks
#164 of 502
Re: You folks are making me nervous. [07chevy1500lt2] by bumperdude
Oct 09, 2007 (4:22 pm)
Reply

Replying to: 07chevy1500lt2 (Oct 08, 2007 6:45 pm)

My truck is the new body 07. 6.0 vortec max 1500 (HD tranny tow package) (4x4 not Z71, just 4x4) A/T tranny, 20" factory street wheels, LTZ 4door, w/all the bells. The tranny always had a slight fluid pump type noise(only slight) and started screwing up and went out over a weekend. It seemed to free wheel and the tranny temp was much higher than normal. Dealer said to went to pieces when they opened it. they thought something must have got left out in assy. The new one seems fine and no more fluid whine noise. 14,000 miles now and all is well.
#165 of 502
Re: You folks are making me nervous. [bumperdude] by 07chevy1500lt2
Oct 09, 2007 (6:32 pm)
Reply

Replying to: bumperdude (Oct 09, 2007 4:22 pm)

Thanks for the info BD. I'm still in the break in process and fully intend to do the recommendations. Day 3 now and still no problems for me.
 
Thanks again.
#166 of 502
Re: 93 shift problem [fgr8frk] by fgr8frk
Oct 12, 2007 (11:06 am)
Reply

Replying to: fgr8frk (Sep 27, 2007 8:21 pm)

Found the problem.
A guy told me to check the brake light switch and make sure it was adjusted correctly, and it wasn't.
Everytime it hit a bump the pedal would bounce slightly and the switch was cancelling overdrive.
#167 of 502
More Problems 93 5.7/4l60 not shifting by fgr8frk
Oct 14, 2007 (12:01 pm)
Reply
Fixed one problem, now have a bigger one.
 
Truck has 190,000 miles.
It does not shift out of 1st unless you run it up alittle and let off the throttle and then I think it shifts straight to 3rd, not sure though, it feels like it is in between(doesn't feel like 2nd), and still pulls good. It does feel like it is shifting to overdrive at about 35-40 but not locking up. Rpm's seem to high for 3rd gear though.
Reverse works and it pulls fine. Will not shift manually, and if you put shifter in 2nd it disengages like you put it in neutral.
I changed fluid and filter, and 2 shift solenoids(1-2 & 2-3) first, still the same.
Changed pressure silenoid and it did make it(when it does shift)shift harder.
It has not set any trouble codes.
Anything would be helpful, Thanks
#168 of 502
Transmission Oil Change Question by maxwell10
Oct 14, 2007 (4:28 pm)
Reply
Had the transmission oil changed in my 2000 oldstyle Chevy 3/4 ton at 60K. Do not know if Chevy dealer changed filter and oil or back flushed system.
 
Question: Is it better to drain oil and change filter or have transmission back flushed?

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