The way to Display Diagnostic Codes on a GM Navigation Program 1Sit behind the GM vehicle's steering wheel and stick your key into the ignition and locate the vehicle's Assembly Line Information hyperlink port. For all Common Motors automobiles, this outlet is situated straight below the steering wheel.2Straighten out a paper clip. It needs to become a metal one, preferably 1 with no a coated plastic or rubber exterior. Shape the paper clip into a letter "U."
3Locate the two slots on the GM vehicle's ALDL. You require the last two slots on the upper row. If they may be labeled, they may be slots "A" and "B." Connect the two together with the U-shaped paper clip.4Turn the important inside the ignition. You need the electrical method powered, but the engine desires to remain off.5Count and record Auto code scanner, on a piece of paper, how many occasions the examine engine light flashes at you. You might need to discern in between two varieties of light flashes. GM's OBD-I codes are numbers comprised of two characters.
The very first number will probably be noticed as extended flashes. The second number will likely be noticed as shorter blip-like flashes. There will be a pause of a second or two between complete codes. As an example, GM OBD-I codes 24 and 36 will probably be be represented by two long flashes and four shorter flashes. There will then be a pause, followed by three long flashes, and six shorter flashes.6Turn the GM vehicle's electrical method off, when you have written down each of the codes. Your GM vehicle's owner manual will not make it easier to decipher the numbers. If you possess a Chilton or Haynes repair handbook for the car car diagnosis tool, you'll discover coding definitions there. Otherwise, you are going to must find the code definitions online.
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