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Chevy TrailBlazer Transmission Problems

420 messages,  Last post on Nov 23, 2009 at 2:37 AM

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What is this discussion about? Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada, SUV

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#298 of 420 Sluggish Transmission by jazzmo Mar 04, 2008 (8:41 pm)
I have an 04 trailblazer. After about 4 months I noticed that the transmission was slower to kick in. I'd step on the gas, after a second the transmission would kick in and sometimes with a loud "clank" sound.   I took it in, they said there was nothing wrong BUt durinhg the test drive with the shop manager, it was gone. They must have done something to fix it.   Anyway the same thing happened again a few months later and to this day still does this. Any ideas?
#299 of 420 2004 TB front differential problem by dlucken Apr 26, 2008 (6:01 am)
I just had to rebuild the front differential on my 2004 Trailblazer at a cost of $2,098! Miller Chev said the cause was different brands of tires between the front and back (not different size). I had to replace the rear tires recently and bought the same tires as originally installed. I then had to replace the front tires shortly after that but couldn’t buy the same tires because they had been discontinued. I had a mixed set of tires on the vehicle that were very new. A few months later some terrible noise was heard when I shifted in A4WD. The road conditions were slippery – snowy. It seems to me that if the 4WD system on the Trailblazer is so sensitive to different tires GM should say so. People (like me) could avoid the possibility of that kind of problem.   Also, Miller Chev has a sign prominently posted above their service area that says they are not satisfied unless the customer is satisfied. I'm certainly not satisfied. While my complaint has more to do with Chevrolet than them, they could do more to get GM to be truthful about the tire requirements for the Trailblazer. There isn't anything in my Trailblazer manual to suggest the potential problem.   How about other 4WD vehicles? Replies to this message: burdawg (Apr 26, 2008 9:40 am) dlucken (Apr 26, 2008 10:09 am) burdawg (Apr 27, 2008 11:54 am) and 2 more... steve_ (Apr 28, 2008 6:47 am) m1lkman (Apr 28, 2008 8:57 pm) toddmaralee (Jul 01, 2008 6:42 pm)
#300 of 420 Re: 2004 TB front differential problem [dlucken] by burdawg Apr 26, 2008 (9:40 am)
Replying to: dlucken (Apr 26, 2008 6:01 am) In my opinion they fed you a load of crap. What was the actual problem with the differential? I mean, did they give you any idea what actually failed in it? Replies to this message: dlucken (Apr 26, 2008 10:09 am) burdawg (Apr 27, 2008 11:54 am) mstarr13 (Apr 28, 2008 4:29 am) dlucken (May 10, 2008 9:18 am)
#301 of 420 Re: 2004 TB front differential problem [burdawg] by dlucken Apr 26, 2008 (10:09 am)
Replying to: burdawg (Apr 26, 2008 9:40 am) The repair bill states: Found side bearings pitted excessive, causing noise pinion bearing starting to pit. replaced side bearings and pinion bearing and resealed case. Total part bill: $542.   I tend to agree with you. Probably the easiest excuse to deflect my irrititation. I will follow up with the BBB but am not too hopeful. Replies to this message: burdawg (Apr 27, 2008 11:54 am) mstarr13 (Apr 28, 2008 4:29 am) dlucken (May 10, 2008 9:18 am)
#302 of 420 Re: 2004 TB front differential problem [dlucken] by burdawg Apr 27, 2008 (11:54 am)
Replying to: dlucken (Apr 26, 2008 10:09 am) Did they mention anything about water being in the differential? Or the lubricant was low? Replies to this message: mstarr13 (Apr 28, 2008 4:29 am) dlucken (May 10, 2008 9:18 am)
#303 of 420 Re: 2004 TB front differential problem [burdawg] by mstarr13 Apr 28, 2008 (4:29 am)
Replying to: burdawg (Apr 27, 2008 11:54 am) First, I would call the dealer rep at GM. They are flat out lying to you. I went through my owners manual (I have an 02) no where in there does it say anything about the tire issue and making sure they all are the same brand. Since every other car I have ever owned worked fine a reasonable person would assume this one would too. The dealer rep can jump on the dealership for their dishonesty. If neither can help you, go to the BBB and file a formal complaint with your state attorney general's office against GM AND the dealership. Also, shoot some emails out to your local news stations, you might get lucky and get one of them to take up your cause for a story. When both the BBB and the AG call them, they will give you want you want just to shut you up.
#304 of 420 Re: 2004 TB front differential problem [dlucken] by steve_ HOST Apr 28, 2008 (6:47 am)
Replying to: dlucken (Apr 26, 2008 6:01 am) Here's what the Tire Rack says about mixing tires.   Subaru doesn't recommend mixing tires on their AWD systems, because of the powertrain. They put that info in the owner's manual I think. Replies to this message: m1lkman (Apr 28, 2008 8:57 pm)
#305 of 420 Re: 2004 TB front differential problem [steve_] by m1lkman Apr 28, 2008 (8:57 pm)
Replying to: steve_ (Apr 28, 2008 6:47 am) Not all car manufacturers put it in their service manuals as subaru does, but the general rule on 4WD vehicles, especially AWD vehicles is to replace ALL four tires at the same time using the same brand of tire. Even with new tires, sizes vary slightly from manufacturer to manufacturer, even if the size on the tires say they are the same, there can be a quarter inch or more in diameter difference which will cause havoc with your drive train. Same thing when buying two tires now and the other two 5000 miles later. the diameter of the tires needs to be the same for the drive train to operate correctly. This is also necessary for your ABS and Stabilitrac systems to work safely. Each wheel on the vehicle has a sensor which tells the vehicle how fast they are rotating. The vehicles computer needs to "see" that all four wheels are rotating at the same time for the two aforementioned systems to work properly and safley. Hope this info helps.
#306 of 420 Re: 2004 TB front differential problem [burdawg] by dlucken May 10, 2008 (9:18 am)
Replying to: burdawg (Apr 27, 2008 11:54 am) Thanks for responding. There wasn't any mention of water or low oil but in discussions the service mgr said low oil was a possibility.

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