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Old 04-13-2010, 07:46 PM
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Default 99 blazer all lights on 4wd switch are on.

why may this be? switch itself? when i bought it it seemd fine then it wouldnt engage, just make a wierd clunking sound so i didnt use it. now the lights will flicker sometimes or all will sta on or all will turn off. hk engine light is on now and code says p1875 ( fwd drive low switch circuit) is this a 35$ fix? just the dash switch? is this making my vehicle lurch in overdrive? doesnt seem to do it when i shift manually. 2$ reward for the 1st person with the right answer.
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Old 04-14-2010, 01:32 PM
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Default

Sounds like a connection issue at the TCCM. The TCCM is what turns on the lights on the switch.

P1875 can be found in the OBD2 Index located in the Tech Article (DIY) section as well as in a search on that code.
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Old 04-14-2010, 01:32 PM
 
 
 
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1999, 4wd, 4x4, 99, bazer, blazer, chevy, code, gm, lights, p1875, switch


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