GM Service Manual Online
For 1990-2009 cars only

When you add non-dealer/non-retailer accessories to the vehicle, they can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control, and stability control. Some of these accessories could even cause malfunction or damage not covered by the vehicle warranty.

Damage to vehicle components resulting from the installation or use of non-Opel certified parts, including control module modifications, are not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts.

Opel Accessories are designed to complement and function with other systems on the vehicle. Your Opel dealer/retailer can accessorize the vehicle using genuine Opel Accessories. When you go to your Opel dealer/retailer and ask for Opel Accessories, you will know that Opel-trained and supported service technicians will perform the work using genuine Opel Accessories.

Also, see Adding Equipment to Your Airbag-Equipped Vehicle.