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3 1. Turn the ignition ON with the engine OFF. 2. With a scan tool, observe the Talk Button Switch data parameter in the 3. Depress the Talk Button Switch Does the scan tool display change from Go to Step 8 Go to Step 4 4 1. Disconnect the headlamp and panel dimmer switch. Refer to Headlamp 2. Place a fused jumper between the headlamp switch headlamps on signal Does the scan tool change from Inactive to Go to Step 6 Go to Step 5 5 Test for one of the following conditions in An open or short to ground in the A open or short to ground in the low Go to Step 9 Go to Step 7 6 Inspect for poor connections at the harness Go to Step 9 Go to Step 7 7 Replace the headlamp and panel dimmer Go to Step 9 -
2007 Hummer H3 2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3
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