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Old 11-16-2008, 01:01 PM
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4l60e p1870 code

I have a 1997 chevy k1500 pickup with a tci truck master transmissiom that just started setting p1870 code. This trans was installed in 2005 and it has about 85k miles. fluid does not smell burnt and I have been driving the truck in 3rd gear only. A local GM dealer tech gave me a diagram tha shows drilling a 1/8 inch hole in the bore plug that caps the regulator apply valve, regulator apply spring and isolator valve. Has any one else seen this or heard of this.

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Old 11-16-2008, 07:23 PM
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I install the TransGo kit SK4L60E , the kit contains a re-designed valve for the PWM system. Works well as long as the converter clutch is not burned up already.
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Old 11-17-2008, 12:40 AM
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Quote:
Originally Posted by Crosley
I install the TransGo kit SK4L60E , the kit contains a re-designed valve for the PWM system. Works well as long as the converter clutch is not burned up already.
Crosley Do you have to drop the valve body to install this kit?
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Old 11-17-2008, 05:13 AM
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Quote:
Originally Posted by mitchmc
Crosley Do you have to drop the valve body to install this kit?

yes , the v-body is dropped. This kit includes several upgrades in it. The boost valve is dropped out of the pump too.

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Old 11-21-2008, 03:21 AM
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Crosley thanks for the info v-body had a lot of ware did what you said shifting good & tcc is locking up and holding.
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