Quote:
Originally Posted by TheWhiteElephant
Something that has always baffled me is why GM didn't install drain plugs in the transmission oil pans. I bought one at Oreilly's and installed it in the TH350 pan.
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Little late to the party, but great build!
Back in the day all the OEM did have drain plugs on the transmission pans. However, people were just draining the fluid, but not changing the filter. So, to force you to drop the pan(and while you have it off, you may as well change the filter), the drain plugs were deleted.