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  1. G

    2001 Denali Service Engine Soon Light But No Codes

    I am getting voltage on the ODB plug on pin 16 using pin 5 as ground. I found the cig fuse blown & replaced it. Disc battery & rest the ECU but light came right back
  2. G

    2001 Denali Service Engine Soon Light But No Codes

    My SES Light will come on & stay on for a while then magically go away for a long time. The last 2 times this has happened I attempted to pull the codes but it acts like the tester is not connected. It will not talk to the computer. Did this at 2 different stores as well. The ABS & Parking Brake...
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