Flyboy92,
The New Vehicle Limited Warranty does not cover any damage or failure resulting from modification, alteration or suspected tampering, to the vehicle's original equipment as manufactured or assembled by General Motors.
Any changes to the GM Powertrain, Fuel, or Emission Systems that involve modifications, conversions, or the addition of non-GM approved products will void the GM Powertrain Limited. GM will not be responsible for costs associated with the repair of these vehicles due to failure of the aftermarket installed components or failures of related vehicle systems induced by these non-GM approved products. Hope this helps.
Caron, Pontiac Customer Service