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2005 GMC YUKON
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BLEACHERBUM
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Computer problem V8 Two Wheel Drive Automatic

Service engine light is on and the shop is unable to connect their diagnostic computer to my truck it will not comunicate with my truck . What could be the problem?
Oct 1, 2009 at 2:04 PM
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BIG BODIE
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If when they hook up their scan tool and the scan tool doen't even light up, then the cigarette light fuse is blown. That's where the OBD connector get's it's 12VDC. Replace the fuse and try again.
Oct 26, 2017 at 11:02 AM
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STRAILER
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So right, check the fuse and then clean the ALDL connector they get corrosion on them becasue they hang down.

Great addition to this thread! Please feel free to help out whenever you are on the site :)

Cheers, Ken
Oct 27, 2017 at 1:06 PM
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VINCE SCHIFANO
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ON A 1998 SUBURBAN IS THERE MORE THAN ONE COMPUTER TO CHECK FOR CODES? CHECK ENGINE LIGHT ON DIM.
Oct 28, 2017 at 3:36 PM (Merged)
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LSUSSEL
  • ✓ASE Certified Mechanic
  • 252 POSTS
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I belive there is only one.
Oct 28, 2017 at 3:36 PM (Merged)
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