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Setting a P1870
If you have a Chev/GMC truck setting a P1870 check the grn/blk and grn/wht wires at the brake switch under the dash. If they break off the TCC solenoid will not get power and no circuit codes will set. If you run the P1870 check with the Tech2 it will tell you... Login to read more. 
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| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2000 GMC Sierra 1500 SL 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
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