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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2009 Posts: 2 New Guy | | New Guy Joined: Jan 2009 Posts: 2 | Hi Everyone -
I purchased a 72 GMC C2500 Super Custom last year and decided to change out the transmission oil and filter in the TH400. According to the original owner's manual, after changing the oil, fill it back up with 7.5 pints of fluid. That's only about 3 3/4 quarts of oil, which doesn't seem like it's enough. It doesn't even register on the dipstick nor will the tranny shift. Does anyone know how much oil should be added without overfilling it?
Thanks | | | | | Joined: Aug 2008 Posts: 230 Shop Shark | | Shop Shark Joined: Aug 2008 Posts: 230 | that a guide line .fill it up were the dip stick says it's close to full,then check it hot ,and top it off . | | | | | Joined: Jan 2009 Posts: 2 New Guy | | New Guy Joined: Jan 2009 Posts: 2 | Thanks, I'll give it a shot. | | |
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