What transmission do I have? 72 Sierra Grande
Trying to find a replacement tranny, but I’m having a hard time figuring out which one to search for. 72 GMC Sierra Grande with the 350 engine. It’s an automatic and it leaks like crazy! Probably 4 litres of atf fluid on the driveway. The option # on my sticker says M49-Turbo Hydra-Matic, but I know that could mean it’s the TH350 or TH400. Where do I need to look to figure this out?
Thanks,
The new guy
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