Edmunds Answers

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  • avatar karjunkie 08/18/10 9:14 am PST

    Your vehicle's 4T65E transmission originally used GM Dexron III fluid and Dexron VI is back compatible with it so you should use this fluid, preferably a synthetic version if you want it to last longer and protect the transmission better. If I were you, I would just drop the pan and replace the 7 quarts or so that will be drained in that process and the transmission filter . This is about 1/2 the total capacity of the transmission. The filter kits sold at auto parts stores will come with the filter and the pan gasket. The ring in the kit is a replacement gasket for the suction tube that goes up into the transmission. You can pry the old one out and press the new one in, or reuse the old one. DO NOT reuse a cork gasket as it WILL leak. Use the improved rubber gasket that comes in the kit. If you have the rigid reusable gasket that has ridges along it's length and around the bolt holes, use that one and discard the rubber gasket. Start by chocking the wheels and jacking up the front of the car. Position the jackstands to prevent the car from falling on you while you are working. Move your drain pan under the transmission pan. Loosen the 10mm bolts along the rear of the pan, then loosen the bolts on the sides and the front until fluid begins to flow out at the back edge. Wait until the fluid stops flowing, then remove all 20 bolts. Remove the last bolt while holding the pan up to the bottom of the transmission. Grab the metal canister filter by the end and wiggle it back and forth while pulling down to remove it. If necessary, pry downward at the other end where the suction tube goes into the transmission. It's just held in by friction on the rubber seal. Once the filter pops loose, drain it into the drain pan and set it aside. Position the new filter under the transmission and press it up into position. Use the disc brake cleaner and paper towels or rags to clean the transmission pan. Here are pics of my pan before cleaning. You can see some very small black particles in the bottom of the pan. The magnet (the rectangular shape to the left) has a coating of particles on it. All this gunk should be removed. Clean the gasket and position it on the pan. Slide the pan into position on the bottom of the transmission and start the bolts but do not tighten them. Once you have all the bolts started you can tighten them in sequence around the pan. Insert a funnel into the dipstick tube and add Dexron III, Dexron VI, or equivalent fluid. Add a quart and check for leaks. If no leaks, add 5 quarts and check the level. It should take a total of about 7 quarts to refill it. The level is checked with the engine running and the transmission in Park. Shift through all of the gears first. Lower the car to the ground and recheck the ATF level. If you have some showing on the dipstick, drive the car a few miles to heat up the fluid and then recheck. It should come up to the HOT line on the dipstick. If it doesn't, slowly add more ATF until it does. DO NOT overfill.










Answers

  • karjunkie 08/18/10 9:14 am PST

    Your vehicle's 4T65E transmission originally used GM Dexron III fluid and Dexron VI is back compatible with it so you should use this fluid, preferably a synthetic version if you want it to last longer and protect the transmission better. If I were you, I would just drop the pan and replace the 7 quarts or so that will be drained in that process and the transmission filter . This is about 1/2 the total capacity of the transmission. The filter kits sold at auto parts stores will come with the filter and the pan gasket. The ring in the kit is a replacement gasket for the suction tube that goes up into the transmission. You can pry the old one out and press the new one in, or reuse the old one. DO NOT reuse a cork gasket as it WILL leak. Use the improved rubber gasket that comes in the kit. If you have the rigid reusable gasket that has ridges along it's length and around the bolt holes, use that one and discard the rubber gasket. Start by chocking the wheels and jacking up the front of the car. Position the jackstands to prevent the car from falling on you while you are working. Move your drain pan under the transmission pan. Loosen the 10mm bolts along the rear of the pan, then loosen the bolts on the sides and the front until fluid begins to flow out at the back edge. Wait until the fluid stops flowing, then remove all 20 bolts. Remove the last bolt while holding the pan up to the bottom of the transmission. Grab the metal canister filter by the end and wiggle it back and forth while pulling down to remove it. If necessary, pry downward at the other end where the suction tube goes into the transmission. It's just held in by friction on the rubber seal. Once the filter pops loose, drain it into the drain pan and set it aside. Position the new filter under the transmission and press it up into position. Use the disc brake cleaner and paper towels or rags to clean the transmission pan. Here are pics of my pan before cleaning. You can see some very small black particles in the bottom of the pan. The magnet (the rectangular shape to the left) has a coating of particles on it. All this gunk should be removed. Clean the gasket and position it on the pan. Slide the pan into position on the bottom of the transmission and start the bolts but do not tighten them. Once you have all the bolts started you can tighten them in sequence around the pan. Insert a funnel into the dipstick tube and add Dexron III, Dexron VI, or equivalent fluid. Add a quart and check for leaks. If no leaks, add 5 quarts and check the level. It should take a total of about 7 quarts to refill it. The level is checked with the engine running and the transmission in Park. Shift through all of the gears first. Lower the car to the ground and recheck the ATF level. If you have some showing on the dipstick, drive the car a few miles to heat up the fluid and then recheck. It should come up to the HOT line on the dipstick. If it doesn't, slowly add more ATF until it does. DO NOT overfill.










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