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Gary
Gary, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 17179
Experience:  25 years GM master tech
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If I change valve body from a 2004 4L60E and put it on a

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if I change valve body from a 2004 4L60E and put it on a 1999 $l60E will it work
JA: How many miles are on the car? Have you noticed any leaks lately?
Customer: 120,000 trans in 99 works good 2004 slips after 60 miles an hour
JA: What is the model of your '04 transmissions?
Customer: 4L60E
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: yes and nothing just getting started
JA: Anything else you want the mechanic to know before I connect you?
Customer: no

Welcome! My name is ***** ***** I will do my best to assist you with this problem.

1998 - 2005 used the same valve bodys

it should swap over no problems

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Customer: replied 2 months ago.
will it work if I change valve bodies from 2004 to 1999 4L60E

yes they are the same

may i ask why you need to change the valve body ?

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Customer: replied 2 months ago.
are the shift solenoids different

no they are the same shift solenoids

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Customer: replied 2 months ago.
I can pull the 99 and put it in the 04 with no issues

that is correct they are the same valve bodys and shift solenoids

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Gary and 2 other Transmissions Specialists are ready to help you
Customer: replied 2 months ago.
thank you

anytime