Chevrolet Pontiac Wave 2007 Owner's Manual page 416

Managing the Vehicle Damage
Repair Process
In the event that your vehicle requires damage
repairs, GM recommends that you take an active
role in its repair. If you have a pre-determined
repair facility of choice, take your vehicle there, or
have it towed there. Specify to the facility that
any required replacement collision parts be original
equipment parts, either new Genuine GM parts
or recycled original GM parts. Remember, recycled
parts will not be covered by your GM vehicle
warranty.
Insurance pays the bill for the repair, but you must
live with the repair. Depending on your policy
limits, your insurance company may initially value
the repair using aftermarket parts. Discuss this
with your repair professional, and insist on
Genuine GM parts.
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Remember if your vehicle is leased you may be
obligated to have the vehicle repaired with
Genuine GM parts, even if your insurance
coverage does not pay the full cost.
If another party's insurance company is paying for
the repairs, you are not obligated to accept a repair
valuation based on that insurance company's
collision policy repair limits, as you have no
contractual limits with that company. In such cases,
you can have control of the repair and parts choices
as long as cost stays within reasonable limits.