I have a chevy silverado 1500 ss 2003. the power outlets and cig lighter dont work, the fuses are in the engine compartment, but when i try to replace both the "cig lighter" and the "aux power" fuses, they pop right when I touch them in...........help please..........i cant use my diagnostic reader without power.......

Hi, any time a fuse BLOWS REPEATEDLY on replacement, a severe SHORT CIRCUIT in the circuit served by that fuse IS THE CAUSE.
There could many causes of THE short circuit. A couple of the more common causes are:
1. A "hot" wire in the circuit has had the insulation cut or chaffed through, allowing the bare metal conductor [wire] to come into contact with a grounded metal part of the body sheet metal.
2. A device [switch, connector, a lamp [bulb] socket], motor or similar, in the circuit has developed an INTERNAL short, usually due to overheating and/or corrosion.

Number one usually happens when a hot wire is pinched or crushed between two sheet metal panels, or the wire [conductor] makes a very sharp turn or bend around a sharp grounded metal edge, and tension and/or vibration eventually chaffes through the insulation, allowing the hot conductor to contact the grounded sheet metal or brace which damaged the insulation..