Electrical problem
2002 GMC Sierra V8 Two Wheel Drive Automatic 165000 miles
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i HAVE A 2002 GMC SIERRA AND 2 DAYS AGO I STARTED THE TRUCK AND IT WOULDNT IDLE, IT JUST QUIT RUNNING 3 TIMES IN A ROW THEN RAN FINE. TODAY I WENT TO START MY TRUCK PUT THE KEY IN AND TURNED THE IGNITION, AND THEIR WAS NO ELECTRICAL POWER TO ANYTHING. NO HEADLIGHTS INSTRUMENTS OR ANYTHING. I HAD THE BATTERY CHECKED AND IT IS FINE SO ARE MY BATTERY CABLES. COULD THIS BE A FUSE ISSUE?

THANK YOU