Cadillac STS (2005-2011) – Fuse and Relay Box Diagram
The Cadillac STS is a mid-size luxury sedan produced from 2005 to 2011, with a facelift introduced in 2008. In this article, you will find complete fuse box diagrams for model years 2005, 2006, 2007, 2008, 2009, 2010, and 2011.
This guide provides detailed information about the location of all fuse panels inside the vehicle, including the under-hood power distribution box, interior fuse panel, and rear compartment fuse block (if equipped). Each diagram clearly explains the assignment and function of every fuse and relay (fuse layout), helping you quickly identify the correct circuit.
The resource is especially useful for diagnosing electrical issues related to headlights, fuel pump, HVAC system, power windows, infotainment, ignition, and other vehicle electronics. Whether you are a DIY vehicle owner or a professional technician, this guide allows safe fuse replacement and efficient troubleshooting.
With organized diagrams and clear instructions, maintaining the Cadillac STS (2005–2011) electrical system becomes straightforward, reliable, and efficient.