Question about 2000 Chevrolet Blazer

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Code p1870 for 1999 chevy blazer - 2000 Chevrolet Blazer

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It is a code for harsh shift from 1st to 2nd gear in the transmission. May be a recall on your vehicle. Check with your local Chevy dealership. Need to replace valve body.


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Posted on Aug 31, 2010

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Posted on Jan 02, 2017

  • 158 Answers

SOURCE: if my truck needs code p1870 for tranny do i need

you may need a new one.... depends on damage possiblities. OR, if only acts up when HOT, it could just require the Sonnax TCC regulator valve kit installed in the valve body. It is just a couple hours of work. I've done oodles of these for $200

Posted on Aug 05, 2010

potek18
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SOURCE: check engine light code read P1870 on a 1998 s10

Hi, this could be a common problem with Chevy S-10's. It has something to do with Valve Body. If you are aware of changing it, have it replaced right away for this might damage some parts on your precious truck. I have provided you a link where certain individuals were abel to reseolved this type of problem. Please click here.

Posted on Jun 07, 2010

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