Fluid Capacity Allison 1000

Here's a site you might be interested in, lots of Chevy talk.

Thanks very much. Now I just have to determine if I have the standard deep pan or the optional shallow pan. Any idea? I still can't find anything from either Chevy or GM that has the capacity.

I will say that the total amount of fluid (15 quarts!) did take me somewhat by surprise. I will be changing to synthetic ATF once I hit 15,000 miles in a month or two.

Cheers - Jonathan

Same thing here, my '83 TH700R4 takes 11. However about 5 quarts remains in the internals of the transmission (TH700R4!!! - your mileage may differ), so you don't need the full 15 quarts. Our resident transmission guru gets on every couple days and may have run into the alison and knows how much is needed for a drain & fill. He's an independent shop, so he may not of run into any of those yet (rather new IIRC).

GMC Gremlin