2010 Cadillac STS Wiring Harnesses

Genuine GM wiring harnesses for the 2010 Cadillac STS, at wholesale prices. Harnesses carry the exact connectors and pinouts the modules expect, and they change with option content and build date. Sigma platform rear-drive sedan, offered with the Northstar V8 and in supercharged STS-V form.

How you know

Rodent damage, corrosion at a connector, or a repair after collision work. On a full-size car, turbocharged and naturally aspirated cars share a badge and little else in this group.

Why buy OEM here

• Real wholesale. The same wiring harnesses your dealer sells, at a fraction over our cost.
• OEM, not lookalike. With wiring harnesses the difference shows up on installation day, not in the photo.
• VIN verified fitment. We confirm the wiring harnesses number against your vehicle before it ships.

Confirming fitment

Buying factory removes the variable. You are installing what the plant installed. We would rather spend two minutes verifying than process a return next week. Orders confirmed before mid-afternoon Central are on a truck that evening.