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It really is a travesty after reading about all these transmission problem posts. I have a 2004 - Z71 Avy, I purchased brand new in Sep 2003, ~$44k truck at that time, all the bells and whistles and upgrades. I bought the xtended warranty, and of course thats long expired. The passenger seat motor failed just before warranty expired, fixed at no cost. The transmission was hard shifting on starts, about a year or so after buying, almost like a "bang", dealer in Northern VA said it was common but should not be a problem, they actually pulled the driveshaft and put in what I believe was nickel coated splines to help it shift smoother - not!, had no effect. Since warranty expired, Ive had both driver window motors fail, then both rear window motors have slowed to half speed, the heater or air conditioner now only works when it feels like it (winter or summer), and the 6 unit CD player confiscated 6 of my favorites last year - and still wont eject them. Today, back out my driveway, put in drive, a clunk, and voila!! No overdrive, no 3rd, 2nd barely holds going up a slight incline, and basically only have 1st gear! This truck has been babied, Mobil 1 Synthetics from the start, required dealer maintenance (tranny flush and transfer case and rear end gear oil 2 years ago), cleaned and waxed, and planned to be my retirement vehicle. It only has 108,000 miles!!! These trucks are supposed to log over 250k without major problems, when serviced and maintained! I work for a major GM supplier subsidiary, and was so thrilled to own this for a decade, now this. Brought to local dealer today in 2nd gear, 1 mile from my home, and they found zero codes, bringing back this Thursday for a longer investigative visit. I can hardly wait what GM's input/response will be on this one, as I have seen quote a few here from GMCUSTSERVICE. I see theories on sprag, rebuilds, replacements, TCM's, solenoids, etc. Engineering design flaws??? Hmmmm. Standing by their product? I hope so...Will update here with shorter briefs, once I get new info, just wanted to get the background established.
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