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Corner store reader will not work on these trucks.
Save time and effort and get FORScan and the reader they recommend.
Pull all codes, clear them, read the codes again. Tell us everything you got before clearing and after.
Run all self tests the program has.
Again tell us the codes. You can not tell if a board is good or bad by looking at it unless it has a burned spot. Put it back together and run the tests with FORScan.

While waiting on the OBD II reader get a good multimeter, open your manual up and find out which fuses are for the items you are having issues with and test them. Check all connections everywhere starting at the batteries to include all grounds at the engine block, fenders, and frame grounds. Check all plug harnesses, this will take some time. Look for burned insulation, worn or chipped insulation, loose connections, etc....

Remember you have fuses under the dash and the hood. Check all the relays under the hood as well for proper fit.
 

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And? What did you find?
 

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Thanks for picking up my slack. Hard to respond sometimes.

I with NoRalPh, the chip should not be an issue for what codes you are looking for. If however you do get powertrain codes make note of them, clear them, pull them again and verify they exist presently or in the past. Good idea to check again in a few days after driving some.
 
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