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What transmission do I have?


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My BIL bought a transmission and transfer case for one of my trucks, and it's not right.  I'm trying to sell it, but I'm not sure I have the right information.

He pulled it from a 99 Silverado, automatic, 4x4. The transfer case is manual. And comes with 300mm torque converter.

I think it's a 4L60E, but I've had people tell me it's not compatible with a 99, which wouldn't make sense because that's what it was pulled from and the truck was running when it was pulled.

I have a tag number 9KBD.

Does anyone know if 4L60E is right?

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  • 3 weeks later...

A '99 1500 is definitely a 4L60E, unless someone's been in there meddling prior. The RPO code of the donor truck in the glove box will tell for sure ... but only if there was no meddling as mentioned. M30 is a common code for the 4L60E.

Edited by Jsdirt
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