Question about 2004 GMC Sierra Denali
Turn signals and brakes work fine, but no marker lights at all.
Checked at the plug with tester and no power. Looks like all 4 fuses for trailer are good. Not sure where else to check.
You need to check to see if it is connected inside the truck there is a plug below the dash near the parking brake
Posted on Aug 22, 2009
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Posted on Jan 02, 2017
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