Seville V8-300 4.9L (1991)
CLAIM INFORMATION
Submit a Product Campaign Claim with the information as indicated.
Refer to the General Motors Claims Processing Manual for additional information about Product Campaign Claim Submission.
Owner Letter
Dear Cadillac Customer:
The Administrator of the U.S. Environmental Protection Agency (EPA) has determined that 1991-1995 model Cadillacs equipped with 4.9 liter engines
may require modifications in order to comply with requirements of the Clean Air Act designed to protect the public health and welfare. GM has
determined that the modifications required by EPA will help reduce emissions of carbon monoxide and hydrocarbons, which are regulated by EPA under
the Clean Air Act. Because GM has achieved this improved emissions performance without compromising driveability, EPA and GM strongly encourage
you to bring your car to a dealer to perform the modification.
In October 1991, General Motors implemented a change in its production of 1992 model Cadillacs equipped with 4.9 liter engines that introduced an
enrichment calibration to the fueling strategy. This calibration was subsequently included in production of 1993-1995 model Cadillacs equipped with 4.9
liter engines and in service parts received by certain 1991-1992 model Cadillacs equipped with 4.9 liter engines. The United States alleges that this
calibration has a detrimental effect on a vehicle's emission control system and that this calibration was not adequately reported to the EPA.
General Motors has agreed to modify the fueling strategy for these vehicles in a way that reduces the emission of air pollutants from the vehicles without
compromising driveability. All vehicles that were built with the fueling calibration in question or which subsequently received the calibration through a
vehicle service repair are being recalled to have the fueling calibration revised.
To correct this condition, your Cadillac dealer will inspect and, if necessary, replace the calibration chip in the Powertrain Control Module on your
vehicle. Of course, this service will be performed at no cost to you.
