Thread: 02 silverado fire wall question

Where would be the best place to drill a 1" hole into the fire wall to run wires? Thanks

Forgot to include it's a silverado 1500

In a spot that is clear on both sides. Usually next to a wire harness. There may probably be an unused plug in the firewall that you can use. Have you looked in the drivers compartment under the carpet?

I went through the factory harness on the driver's side. It was a long time ago but I know I cut a slit in the top of the rubber grommet on the engine compartment side. Then I think I used a sharp pointed object to pierce through the other side of the grommet and feed the wire through. Just be careful not to hit any factory wiring.

Originally Posted by bigcat

I went through the factory harness on the driver's side. It was a long time ago but I know I cut a slit in the top of the rubber grommet on the engine compartment side. Then I think I used a sharp pointed object to pierce through the other side of the grommet and feed the wire through. Just be careful not to hit any factory wiring.

+1, Did this in my Suburban.

Originally Posted by bigcat

I went through the factory harness on the driver's side. It was a long time ago but I know I cut a slit in the top of the rubber grommet on the engine compartment side. Then I think I used a sharp pointed object to pierce through the other side of the grommet and feed the wire through. Just be careful not to hit any factory wiring.

Did the same in my Sierra works great plenty of room to run wires

Originally Posted by bigcat

I went through the factory harness on the driver's side. It was a long time ago but I know I cut a slit in the top of the rubber grommet on the engine compartment side. Then I think I used a sharp pointed object to pierce through the other side of the grommet and feed the wire through. Just be careful not to hit any factory wiring.

I think I'll try this. Thanks for all of the help