
Roof-Mounted Side Rails (Required to Install Roof Rack Cross Rails)
GM Part #85617520
About this product
These Roof-Mounted Side Rails are required to install Roof Rack Cross Rails and attach to required Roof Ditch Moldings from Cadillac Accessories (both sold separately). They install to four attachment points on the vehicle that can be accessed through the required Roof Ditch Moldings, which are designed to replace your factory roof moldings. Installation is recommended by an authorized Cadillac Dealer. Includes two roof-mounted side rails (driver and passenger side) and installation hardware.
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- Engineered to meet the specific fit, appearance and compatibility standards of your vehicle
- Required to install Roof Rack Cross Rails from Cadillac Accessories and attach to required Roof Ditch Moldings from Cadillac Accessories (both sold separately)
- Installed to four attachment points on the vehicle that can be accessed through the required Roof Ditch Moldings, which are designed to replace your factory roof moldings
- Constructed of aluminum and painted to complement your vehicle’s appearance
- Installation by an authorized Cadillac Dealer is recommended
- Includes two roof-mounted side rails (driver and passenger side) and installation hardware
The greater of either the balance of the vehicle's bumper to bumper warranty or 12 months / 12,000 miles
Frequently Asked Questions
Yes. These roof-mounted side rails are required to install Roof Rack Cross Rails and attach to required Roof Ditch Moldings from Cadillac Accessories (both sold separately). They install to four attachment points on the vehicle that can be accessed through the required Roof Ditch Moldings (sold separately), which are designed to replace your factory roof moldings.
Yes. Cadillac Accessories Roof Ditch Moldings (sold separately) are required to attach these roof-mounted side rails. Your factory moldings completely cover your roof ditch. The accessory roof ditch moldings are designed to replace these for access to four attachment points. The side rails then install to these attachment points.
Initial installation by an authorized dealer is recommended. It is not recommended, but they can be removed. Once removed, they will leave exposed holes in your roof moldings.
Please consult your Owner’s Manual for the specific height of your vehicle’s roof cross rails, and be sure to follow the maximum height recommendation of the car wash you visit.

