Transport CanadaLow Risk
1999 GMC SIERRATransport Canada Recall #1999079
The official notice
Defect
Certain vehicles equipped with 4.8 litre or 5.3 litre engines do not comply with the requirements of CMVSS 1103 - Exhaust Emissions. Engines may have been built with the wrong Linear Exhaust Gas Recirculation (LEGR) valve which could limit the required air flow rate. A failed valve could cause the vehicle to fail to meet applicable emissions standards.
Safety Risk
No risk description available.
Remedy
Vehicles will be inspected and LEGR valve will be replaced with a new valve where required.
175 vehicles affectedMfr ref: 99009Updated June 10, 2026