manual transmission drain and fill plugs

1989 CHEVROLET CHEYENNE
230,000 MILES • 6 CYL • 2WD • MANUAL
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FARMBOY12008
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  • 4 POSTS
where are the manual transmission fluid fill and drain plugs on my 89 chevrolet silverado, it has the normal duty aluminum one piece transmission
Dec 28, 2010 at 3:41 PM
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DOCFIXIT
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  • 18,828 POSTS
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The fill plug is in the side of the transmission. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

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Dec 28, 2010 at 3:54 PM
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TTYSON
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where is the auto transmission drain plug?
Feb 26, 2021 at 5:09 PM (Merged)
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JOHNNYT73
  • ✓ASE Certified Mechanic
  • 924 POSTS
  • ASE Certified Mechanic
If there is not a drain plug on the transmission pan. Then the only way to drain the fluid is to remove the pan. Be sure to only loosen the bolts most of the way and then just lightly pry it apart from the transmission to let it drain some. Then begin removing bolts at one corner to let it hang and drain. Be sure to get a new gasket for the pan (count how many bolt holes there are to find the correct gasket). You will want to change the filter to while you are in there.
Feb 26, 2021 at 5:09 PM (Merged)
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