Shifts great and no more slipping or jumping into gear. Finally, I added a bottle of "Seafoam Trans Tune" and literally, within two miles, transmission was working perfectly. When I added a bottle of Lubegard red, there was a slight change, but not enough to make me happy. I added a bottle of Lubegard silver, no change. I added two bottles of the "Lucas" tranny fix in a bottle, (it's really thick stuff). I changed the fluid with Advanced Auto Dex/M and the filter as well. For many months, it had been slipping in first gear and "hesitating" between 3rd adn 4th, (like you said, it was "thinking" about shifting). I've got a 1993 Ford Taurus with the AXOD metric transmission. If I were you, I'd use the Maxlife or a Dex VI. Any name brand Dex/Merc would be acceptable as well although they are no longer licensed so what you are getting will vary some, but they generally are good fluids.ĭo a pan drop and filter change, put the shift kit in while the pan is dropped and fill it back up with whatever fluid you want. Many people use Maxlife Dex/Merc which is full synthetic and are very happy with it. The D4 was an experiment for fun as much as anything.Ī pan drop and filter change will get out 7.5-8 quarts, a large % of the fluid. I probably would just have stuck with the Dex VI if I had it to do over again. I have Redline D4 in it now which is working good it seems. I do a pan drop and filter change every 30k miles. I had a great UOA of my trans oil using Valvoline Dex VI from 90k-180k when I tested it at 180k. It will occasionally shift more firmly when hot but it never slams like it did. I put my kit in at 120k miles on the odometer and I just hit 200k miles last week, still shifting good. You can hear the pump whining as well when this happens. If the computer detects the shifts as being too slow it will think it is failing and go into a fail safe mode and cause the pump to go to max pressure and cause the shifts to slam from gear to gear. ![]() It keeps the shifts within specification. I had a hard shifting problem with my Grand Prix and it was fixed by a shift kit similar to the Trans Go kit mentioned. I agree with the other poster that suggested the shift kit. I might mention sometimes when putting it in gear it is kinda loud its hard to describe the sound Oops!! 2003 century, it's a slight slam, it seems like it thinks for a second then shifts there is a noticeable buck on All upshifts. Whether you're looking for something simple like an oil change or you need us to inspect your brakes, we're ready to help you get the most out of your GMC or Buick.When you say, starts to shift hard, how hard? Slamming into gear like it wants to self destruct or just firmer than you want? Simply fill out our online appointment form to let us know what your car needs. They're also equipped with the same GMC and Buick parts that are used to assemble your car, meaning you can count on like-new performance when you drive your car home.Īs for what we can do for your car: that's up to you. Keeping up with the service schedule in your owner's manual ensures your GMC Acadia, Sierra 1500, Terrain, Buick LaCross or Verano will run efficiently and safely.īecause so much work goes into caring for your car, Young Buick GMC maintains an onsite auto service and repair department, staffed with mechanics that are trained to know GMC and Buick models, specifically. ![]() An essential part of taking care of your GMC or Buick is routine maintenance. Like anything else you own, your car will perform better when it's properly cared for. Help Your Car Perform Like New with the Young Buick GMC Service Department, Proudly Serving Layton, Salt Lake City, Kaysville, Bountiful and Ogden
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