LS1BlackBird99

iTrader: (202)

I have a 2000 Silverado and I'm wondering if I could upgrade to some of the 2004 Silverado tail lights on my truck without major modification. Has anyone done this? Is it hard to do?

RandomHero

iTrader: (24)

yes it's extremely easy. The only thing is that right now you have a 3 bulb harness and the 03+ have a 4 bulb harness. It won't affect anything but some people like having the extra bulb to make it a "complete swap." Personally, I'm lazy and I did the swap over 3 years ago and never converted to a 4 bulb harness.

Here's what you need to do
1.) Buy taillights, I would also recomend buying the harnesses which are a direct plug and play
2.) If you decide not to buy the harnesses you will need to modify the light sockets a tiny bit. A dremel works great. It takes about 3 minutes to do both sides and won't affect the lights one bit
3.) There is also a way to modify the stock harness and add the 4th bulb, but I won't get into that.

There is a how to around on gmfullsize somewhere if you really need it, but honestly it's a walk in the park. I did it when I was 17 years old and barely knew how to turn a wrench.

beastmode

iTrader: (52)

03+ Tail Wiring Harness' P/Ns
16531401
16531402

Mangled03gmc

iTrader: (95)

I have a gmc, which has the 3 bulbs, the new silvys has 4 like said, I too only am using the 3 bulbs, kept the stock gmc harness, had to mod the bulb fastners a lil, but very easy. I just covered the 4th light hole on the side of the silvy lights up.. Look great..

John