G20 1981 transmission fluid

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February 20th, 2021, 6:05 PM

dtorres

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G20 1981 transmission fluid

Can somebody help me in identify the gasket part number that is needed to replace the transmission fluid and filter?
as I was not able to locate the vim I have the model which is CG21305.
thanks in advance

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February 20th, 2021, 6:23 PM

mountainmanjoe

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have you tried a parts website, like rockauto.com ?

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February 20th, 2021, 6:55 PM

dtorres

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Quote:

Originally Posted by mountainmanjoe

have you tried a parts website, like rockauto.com ?

I was looking at it it's very good by the way, but I'm not sure if the engine is 5.0 or 5.7

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February 21st, 2021, 1:00 AM

Triaged

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Their websites that can decode the vin. What is the 8th digit of the VIN?

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February 21st, 2021, 6:37 AM

dtorres

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Quote:

Originally Posted by Triaged

Their websites that can decode the vin. What is the 8th digit of the VIN?

I was able to locate the VIN it's 2GBEG25M5B4147496 from what I can see it's ( (LT9) ENGINE,350,V8 (GASOLINE)). will check in that site in order to see if I can locate the correct parts.
thanks!

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February 21st, 2021, 7:04 AM

dtorres

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any other site like rockauto.com ? I've found everything there so far.
thanks a lot for the help provided.

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February 21st, 2021, 8:36 AM

Triaged

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https://www.napaonline.com

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February 22nd, 2021, 10:25 PM

William Kisselstein

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Engine doesn't even matter here. It's either a TH400 or TH350. I'd bet on the 400. Lots of sites online to ID the transmission by the shape of the pan and number of bolts, but the 350 has a more or less square pan with an angled corner while the 400 has a rounded end and a bulge on one side. Rock Auto shows both. A filter and gasket for it is a filter and gasket for it.