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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29583
Experience:  GM Grand Master Technician 2007. 14 years experience.
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all 4L60E transmissions have tags with codes on top of trans

Customer Question

all 4L60E transmissions have tags with codes on top of trans i know that the first number is XXXXX year and the first letter is the body style what do the next 2 letters mean
Submitted: 7 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 7 years ago.
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GM Tech (Cam) :

What are the codes? m30?


this one has a 1cbd


most of the trans i see have 1chd ,2chd,3chd, The escalde code starts with a Z example: 1kzd 1 because its a 2001 year k becauce its 4X4 z because its escalde

GM Tech (Cam) :

Here it is, the 1 is the year, 2001 then the next are the model. Then the third is a D meaning 4l60e