Liftgate Control Module ( LGM ).
HD means heavy duty and the 2500 means that it is a 3/4 ton.
I think you mean pdc. That is the power distribution center. The underhood fuse box.
It's the fuse for the blower motor in your dash (air vents)
If your truck is a 4x4, then that's is were the fuse for 4x4 goes. IT MEANS (4- WHEEL DRIVE)
Um... I would sure hope so since they are both 2003. But if you mean "will a bumper from a 03 silverado 1500 fit a 03 silverado 2500, (or the other way around)" I am not sure. It might, but the frame on the 2500 is bigger than that on a 1500.
That means it is a 1/2 ton truck. 2500 means it is a 3/4 ton and 3500 means it is a 1- ton truck.
VCM Vehicle Control Module.... PCM Powertrain Control Module. The fuse provides voltage to the control computer (VCM or PCM) that makes your engine run.
It means that its 2500
NORMALLY this mean a bulb is out, but it can mean your flasher isn't the correct one. Some cheap heavy-duty flashers for towing will do this.
Two thousand and five hundred.
Automobile Glass fuse
slow fuse