Last post on Nov 13, 2013 at 7:43 AM
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Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada, SUV
#34 of 505 GM knows their tranmissions are faulty!!!
May 20, 2005 (3:18 pm)
We have a 2002 Trailblazer LT. At 43,000 miles, my wife was driving some clients around (she's a realtor) when the transmissions started making a very loud whining/spinning sound and the car would not go anymore. Reverse had completely gone out. We had to have the car towed 22 miles. I then went to talk to the service manager at a local dealer and told him about the symptoms... he immediately said "Yep... that's the Sun Gear going out... happens all of the time in those things!" The lady right in front of me had the same issue at 20,000 miles, and then again at 38,000 miles!! Well, the dealership said it would be about $3,200 to replace the transmission. I asked if they could just fix the "Sun Gear" but they said that if they did that, without replacing the rest of the tranny, they could not warranty the work. You see, they'll do only the Sun Gear if you are still under warranty, hoping that your car will limp along until the warranty expires. But, since I had gone last the 36,000 miles, they wouldn't just fix that part. They said that the tranny alone was about $2,100 and that the labor was an 8.75 hours "book charge" (that's what they always charge, regardless of how long it takes). So, I know a friend in automotive repair and he said he could order the tranny using his business account. That was a good thing, because he got it for me for just over $1,400 (see how much they mark it up?). He did the work for $370, because it took him UNDER 6 hours (and he doesn't have all of the fancy schmancy equipment that they have, like a CAR lift for one!). So, my total here was about $1,800, saved about $1,400. So then I went back down to the dealership to sort of "complain"... after reading this forum it seems very apparent that this is a known issue with the 4L60-E Chevy transmission in 2002, but they do nothing about it. He suggested that I call "customer care" to see if I can get some "goodwill reimbursement". I tried that, and guess why they wouldn't reimburse me any money? You guessed it... this is because I didn't go to the overpriced dealership to have the work done. Even if I had, they said the best that might have happened would have been 25% return. At least my new tranny has a 3 year warranty. I don't think I'll keep the car that long due to these ridiculous events. This was/is a KNOWN and CHRONIC issue, and yet it's up to us, the consumer, to eat the cost. I'm going back to Toyota. This was my first, and last GM purchase.
#35 of 505 Re: 03 GMC Envoy Major Tranny probs!!! [dieselone]
May 21, 2005 (10:06 pm)
I had slipping problems on my 2003 Envoy XL. It started at about 12000 miles, but took a couple of return trips and dragging the transmission guy out at about 18,000 for a drive before it got addressed.
Under load, uphill 2nd to 3rd gear slips badly, sometimes all the way to 6000 RPM. There was never any warning lights or diagnostic messages on the test box that was plugged in during the demo.
The fix involved some valve/s rebuilt, which did make it totally fine......for a while!
At about 34,000 miles, the exact thing started all over again, after two trips back to the dealer who was "unable to reproduce the fault" I started to feel totally uneasy with the warranty getting close to the end. As I had loads of other issues during it's short two year life, I dumped it into the used market. (But not without getting a $3,500 loyalty certificate from the local GM rep.
So note, if you have problems, complain big time, offer a letter from your attorney.
#36 of 505 03 TrailBlazer Transmission Replaced
May 23, 2005 (2:53 pm)
Just had the transmission replaced on my 03 Trail Blazer Ext. No warnings just went out on trip out of town. Of course my mileage is just over the warranty limit (40,770). I drove it in 2nd gear (1st and 2nd only gears that worked) to the nearest Chevy dealership. The service manager was not at all surprised and said up front that he could probably get GM to cover parts. I had to cover the labor of about $750. Can't believe there hasn't been a recall on these transmissions yet.
#37 of 505 Re: 03 GMC Envoy Major Tranny probs!!! [kctahoe]
May 23, 2005 (6:04 pm)
Check your upper coolant line. Our transmission was doing the same thing . We took it to the dealer and the told us transmission is shot. They put the coolant line next to the cataylic converter and all the fluid leaked out with no warning causing to transmission to lock up.
#38 of 505 Re: 03 TrailBlazer Transmission Replaced [bpurvis]
May 23, 2005 (6:09 pm)
Let me know how he was able to get gm to cover the parts. Gm refused to pay for mine.
#39 of 505 Re: Water Pump? [burdawg]
May 24, 2005 (9:49 am)
Not at first. I heard a noise under the hood. So, when I pulled into my carport, I raised the hood and started checking things. I found that the fan was very loose and oil was leaking from behind the fan. After it sat in my carport a little while, I looked under it, and oil and water/coolant both had leaked out. My husband took it that following Monday to a mechanic (not the dealer cause he is FED UP with GM) and they told us it was the water pump.
#41 of 505 Re: 04-05 Transmission Problems? [57chevrolet]
May 24, 2005 (11:48 am)
I own a 2004 LS EXT. No problems at all. I only have 10K on my SUV, so it makes me wonder what will happen in three or four years. I also read that the tranny issues were resolved after the 2003 model year. We will see. Make sure you drive the Trailblazer you are wanting to buy in high speeds. Wind noise may not suite your tastes. A lot of people complain about it here.
#42 of 505 Re: 2002 trailblazer transmission [skmaher]
May 27, 2005 (9:47 am)
"The water pump went out at 79k miles. I had no signs until it happened. I heard a funny noise, then it was like I put the truck in neutral and was reving the engine." In all the years that I worked at a parts store and worked on poeple's cars, I have never even heard of a bad water pump causing the car to do this. When water pumps go bad, they leak coolant all over the ground, or the bearings will go bad and they will leak coolant, squeal bad, then sieze up.
As far as the other transmission problems, if you get things repaired when problems are first noticed, you generally don't need the whole transmission to be replaced. On the newer electronically controlled transmissions, the shifting is controlled via solenoids, which have generated numerous TSBs and changes over time. Also, what makes most of the transmissions go is lack of fluid pressure holding the clutches engaged. The solenoids and other parts of the valve body are responsible for this.
My own problems revolve around an S-10 that has a bad launch shudder and a shudder at times in other gears. I have found out from a TSB that a bad ground could be the problem, and from buying a transmission book, found out that there are literally 100 changes that GM has made to the same transmission in 6 or 7 years. I have also found out that most of these problems are cause by lack of fluid pressure.
If you get a transmission fixed or replaced, make sure that they are updating it with the latest fixes and that they have checked all applicable TSBs from GM. Also, as was my experience just yesterday, there are only a handful of service people who will take the time to help you and speak to you. The rest think you are dumb and don't want to waste their time. (I have several letters going to dealership GMs)
#43 of 505 Re: 03 TrailBlazer Transmission Replaced [bpurvis]
May 30, 2005 (11:06 pm)
I own a 2002 Envoy 4x2, automatic trans w/ 44K miles.
Need some expert advice. I was driving this weekend and had some issues.
On one occasion, I stepped on the gas to accelerate but only the RPM went high-there was no acceleration. I then tried again, and it began to accelerate. But from that moment on, I notice the vehicle is having problems shifting from 1st to 2nd and the biggest problemÖI have no reverse.
I checked some forums and noticed that other people have some similar problems, but I didnít see any solutions. I tried adding 1 quart of transmission fluid since it was a bit low, but that didnít work.
I noticed some people had parts replaced...can you tell me the parts, costs and if there were warranties?
Any help would be greatly appreciated, thank you!