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changing tranny fluid

Discussion in 'Chevy C/K Truck Forum' started by IThurstSObad, Nov 29, 2009.

  1. IThurstSObad

    IThurstSObad Rockstar

    95 silv 5.7 stock tranny not sure the name of it.

    wondering how i change it,doing it myself for the first time obv.

    thanks alot.:rofl:
     
  2. mtj63

    mtj63 New Member

    reply

    i did this not to long ago lol go to your transmission pan there should be 16 bolts goin around it i belive lossen the bolts but not all the way and fluid will start to come out.once most of the fluid is out lower the pan but be careful because there is still fluid in the bottom of the pan then take the old filter out and put the new one in there like 15 bucks at autozone. then put the new gasket on goin around the tranny pan and bolt it back up in a criss cross formation. all thats left now is fill it the fluid back up through the tranny dipstick tube. hope this helps
     
  3. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Loosen one corner so it drops down a little more than the other three and the fluid will pour into your catch pan easier.
     
  4. okysmokey911

    okysmokey911 Rockstar 100 Posts

    Depends on whether or not you have the nv3500 or the automatic. Two completely different methods are used.
     
  5. Chris Miller

    Chris Miller Rockstar 100 Posts

    If it's the 4L60E, which it most likely is, then unbolt the mount from the crossmember. Put a jack with a board to spread the load under the pan and jack it up just enough to get at the two bolts holding the mount to the transmission. Remove the mount and replace it with a wooden block so you can get at the back pan bolts easier. Now you can let the jack back down. Then take off all the bolts except the four toward the rear. Take those about halfway out. Then, tilt the pan slowly(you don't want a bath in that stuff) and drain it into the drainpan. Then, pop the remaining bolts off and toss the rest into the pan. The filter just pops right out. Clean out the pan real good with carb/brake cleaner, making sure to get all the metal particles out of the pan and off the magnet. Scrape all the old gasket material off the pan and the transmission. Put the new gasket on, with silicone if it's a cork gasket, and put everything back together.

    Get six quarts of Dexron-III transmission fluid, not Dexron-VI or whatever generic house brand the parts house tries to sell you. Put five through the dipstick tube and start the truck. Set your parking brake and go through each gear, staying in each gear about five seconds until you get to 1st. Go back up to Park the same way. Let it run for about 10-15 minutes and check the fluid level. It should be in the HOT range. If not, add the other quart. If so, give it to your buddy, or you can also use it in your power steering.
     
    Last edited: Dec 26, 2009

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