What fits the GMC Sierra
The spotlight, the vehicle-specific bracket kit and the handle assembly. A Unity spotlight does not bolt on without the correct kit, so order them together.
GMC Sierra fitment table
Every confirmed application, with the mount point and the left- and right-hand bracket kit numbers. Source: Unity’s own vehicle application data.
Compare kits across vehicles in Which Unity Installation Kit Fits My Vehicle?
| Make | Model | Years | Mount | LH kit | RH kit |
|---|---|---|---|---|---|
| GMC | C1500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | C1500-c3500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | C2500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | C3500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | K1500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | K1500-k3500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | K2500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | K3500 Sierra | 1987–1998 | Door | 229 | 229RH |
| GMC | Sierra | 1999–2003 | Door | 229 | 229RH |
| GMC | Sierra | 1999–2006 | Door | 229 | 229RH |
| GMC | Sierra | 2004–2006 | Door | 229 | 229RH |
| GMC | Sierra | 2007–2013 | Inside post | 257 | — |
| GMC | Sierra | 2007–2014 | — | — | — |
| GMC | Sierra | 2019–2024 | — | — | — |
| GMC | Sierra 1500 | 2014 | Post | 263 | — |
| GMC | Sierra 1500 | 2014 | — | — | — |
| GMC | Sierra 1500 | 2019 | Post | 8938 | — |
| GMC | Sierra 1500 - 3500 | 2015–2018 | — | — | — |
| GMC | Sierra 1500 - 3500 Denali | 2015–2018 | — | — | — |
| GMC | Sierra 1500 Denali | 2014 | Post | 263 | — |
| GMC | Sierra 1500 Denali | 2014 | — | — | — |
| GMC | Sierra 1500 Denali | 2019 | Post | 8938 | — |
| GMC | Sierra 1500-3500 | 2015–2018 | Post | 263 | — |
| GMC | Sierra 1500-3500 | 2020–2026 | Post | 8938 | — |
| GMC | Sierra 1500-3500 Denali | 2015–2018 | Post | 263 | — |
| GMC | Sierra 1500-3500 Denali | 2020–2026 | Post | 8938 | — |
| GMC | Sierra 2500-3500 | 2014 | Inside post | 257 | — |
| GMC | Sierra 2500-3500 | 2019 | Post | 263 | — |
| GMC | Sierra 2500-3500 Denali | 2014 | Inside post | 257 | — |
| GMC | Sierra 2500-3500 Denali | 2019 | Post | 263 | — |
| GMC | Sierra 2500-3500 Wo Air Curtain | 2014 | Door | 254 | 254RH |
| GMC | Sierra Classic | 1999–2000 | Door | 229 | 229RH |
| GMC | Sierra Classic | 2007 | Door | 229 | 229RH |
| GMC | Sierra Classic Denali | 2007 | Door | 229 | 229RH |
| GMC | Sierra Denali | 2005–2006 | Door | 229 | 229RH |
| GMC | Sierra Ev | 2024–2026 | Post | 189RH | 189 |
| GMC | Sierra With Out Air Curtain | 2007–2013 | Door | 254 | 254RH |
| GMC | Sierra Wo Air Curtain | 2007–2013 | Door | 254 | 254RH |
Installing a spotlight on the GMC Sierra
Sierra and Silverado share a cab, so the kit lists match. The older C1500-C3500 and K1500-K3500 trucks take an H-shaft spotlight.
Step-by-step instructions and tools: How to Install a Unity Pillar-Mount Spotlight. Every torque value in one table: Unity Spotlight Torque Specs.
GMC Sierra spotlight questions
What is a shaft code and why does it matter?
The shaft is the tube that carries the lamp from the pillar to the handle inside the cab. Its length and bend are specific to the body - that is what the letter code (A, GM, V, H, CL, DC, P, PL, O) records. A GM-shaft spotlight will not sit correctly on a body that needs an H shaft, even with the right bracket.



















