The emission control system of your Medium Duty Truck or Chassis were designed, built and tested using genuine GM parts † and the vehicle is certified as being in conformity with the Emission Regulations under the Canadian Environmental Protection Act. Accordingly, it is recommended that any replacement parts used for maintenance or for the repair of emission control systems be new, genuine GM parts.

The warranty obligations are not dependent upon the use of any particular brand of replacement parts. The owner may elect to use non-genuine GM parts for replacement purposes. Use of replacement parts which are not of equivalent quality may impair the effectiveness of emission control systems.

If other than new, genuine GM parts are used for maintenance replacements or for the repair of components affecting emission control, the owner should assure himself/herself that such parts are warranted by their manufacturer to be equivalent to genuine General Motors parts in performance and durability.

Warranty repairs must be performed by an authorized General Motors Medium Duty Truck dealer except in an emergency situation when genuine GM warranted or an authorized General Motors dealer is not reasonably available to the vehicle owner. You are responsible for presenting your vehicle to a GM Medium Duty Truck dealer selling your vehicle line as soon as a problem exists.

† "GENUINE GM PARTS," when used in connection with GM vehicles means parts manufactured by or for GM, designed for use on GM vehicles and distributed by any division or subsidiary of General Motors Corporation.

If, in an emergency situation, it is necessary to have repairs performed by other than an authorized General Motors Medium Duty Truck dealership and you believe the repairs are covered by the Emission Control Systems Warranty, take the replaced parts and your receipt to your General Motors dealership handling your vehicle line for reimbursement consideration.

Receipts and records covering the performance of regular maintenance or emergency repairs should be retained in the event questions arise concerning maintenance. These receipts and records should be transferred to each subsequent owner of this vehicle. GM will not deny warranty coverage based solely on the absence of maintenance records. However, GM may deny a warranty claim if a failure to perform scheduled maintenance resulted in the failure of a warranted part. You should also be aware that GM may deny you warranty coverage if your vehicle or a part has failed due to abuse, neglect, improper maintenance, or modifications not approved by GM.