Airbag light on/no communication with scan tool

2000 GMC JIMMY
140,000 MILES • 4.3L • V6 • 4WD • AUTOMATIC
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MACKGOOSE
  • MEMBER
  • 2 POSTS
I had an airbag light that was intermittently on. If I restarted the truck it sometimes went off. It is now on all the time. I had a friend hook up his scan tool and it says no communications. It does communicate and is able to check other parts of the vehicle (engine for example). I checked the fuse and connector at he module located under center console. Fuse good and the connector is clean and secure. The only thing I can see is the lower steering cooler line leaked and some may have dripped on the driver's side air bag sensor/switch. I cannot pull any airbag codes without being able to communicate with the scan tool. Any ideas/help on what I should do next? The driver's side air bad switch/module is $170.00. I do not want to throw parts at it.
Sep 11, 2018 at 6:55 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning.

Failure to communicate could be an issue with the module itself. If you can communicate with the other systems, that would point to the module.

I would replace nothing at this point until I get another opinion on the system. It may be your buddies scan tool. I would see if a shop or someone else with a scan tool can communicate with the module first.

Roy
Sep 11, 2018 at 7:56 AM
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MACKGOOSE
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I am going to go that route. I appreciate it.
Sep 11, 2018 at 8:55 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
No problem, glad to help.

Keep us updated.

Roy
Sep 11, 2018 at 8:59 AM
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