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Gm tech 2 no communication showing error
Gm tech 2 no communication showing error





It probably needs something turned on, like radio, interior lights, A/C.

  • If both sides don't light, look up what that fuse does.
  • This will be the number on top of it, e.g. You will need to replace it with exactly the same amperage rating.
  • If one side lights and the other doesn't, that fuse is blown.
  • Touch the test light tip to the other metal opening of the same fuse.
  • gm tech 2 no communication showing error

    Touch the test light tip to one of the metal opening note its state, on or off.

    gm tech 2 no communication showing error

  • HERE - Taking your time, work on one fuse at a time.
  • Looking at each fuse, you will see two metal openings on top of each one.
  • If it doesn't come on, ensure you touched a power source and ensure you are on a good chassis ground.

    gm tech 2 no communication showing error

  • Touch tip of Test Light to a known power source, which should have the light come on this is done to test your ground.
  • Research to find out where all your fuse boxes are.
  • Well, I really need more input to help you.īut, let's start simple and check all fuses.







    Gm tech 2 no communication showing error