Is your OBD scan tool failing to power up on your 2006 GMC? This is a common issue for DIYers. If your scan tool won’t light up when plugged into your GMC’s OBD II port, it signals a power delivery problem to the diagnostic port.
Possible causes include a blown fuse for the OBD port or diagnostic system. As you mentioned key jiggling helped momentarily, a faulty ignition switch could also be the culprit, disrupting power. Damaged OBD port pins or wiring are other potential issues.
To troubleshoot why your “2006 Gmc Wont Light Up My Obd Scan Tool”, first check relevant fuses using your GMC owner’s manual. Inspect the OBD port for damage. If these checks fail, professional mechanic diagnosis is recommended to identify if it’s an ignition switch, wiring, or other electrical fault.
