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Old 03-10-2006, 07:47 PM
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4L60E 4x4

Hi, my name is Matt. After searching this site, it is very apparent that 4L60E transmissions have issues. I have a 99 yukon Denali 5.7L 4x4 w/193K miles. The transmission is gone now. I purchased a used tranny from a 99 yukon denali w 62K miles. I have made the decision to install the used transmission and then rebuild the orginal 4L60E transmission in class at UTI. Im not sure when we will get to "auto trans" in school, so til then the used one will have to do. School is 15 months and I start April 24th. I have searched and found that GM has an issue with the valve body wearing and need fixing. I found this kit at transmissioncenter.


#K4L60E-L. Fits 4L60E transmissions 1998 up. Cost $46.00

This valve body kit deals with these problems:

* Code 1870
* Delayed engagements
* Slide bump 2nd & 3rd
* 3-4 clutch burn-up
* Help for worn plates
* Provides more lube oil
* Regular and Heavy duty applications
* Improves overall transmission performance

1. Includes PWM Powervalve to correct code 1870 problems and still maintain normal computer strategy of the converter.
2. Includes oversized checkballs to give new life to the original worn separator plate.

Would this kit be appropriate to install in both transmissions I have? Do you have any recommendations? The Denali will be used for towing in the future after school. Car trailer and vehicle. The biggest transcooler B&M makes is waiting to be installed.

The orginal tranny was banging during shifting and now the gears are slipping and very slow to go into reverse. Havent driven it to see if any other gears are affected since reverse is so slow and lazy to engage. Is there anything I should do in the future for the used trans?

Thanks in advance.


Last edited by tarmon8r; 03-10-2006 at 08:41 PM.
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