Lbz may be a bit different, here’s what Ive got.
2 in bottom of bumper from hitch.
2006 GMC Sierra 3500 SLT CCLB 4x4
Mods: EGR block, EFI LIVE by Rob (DSP5), Edge Insight CTS2 w/ backup cam and EGT probe, Pacer 07.5+ smoked cab lights, M-A Pump rub fix, TransGo Jr w/ Mike L springs, Russell stainless brake lines. My Build Thread