THESE VEHICLES MAY NOT COMPLY WITH C.M.V.S.S. 1105 - EVAPORATIVE EMISSIONS. THE MALFUNCTION INDICATOR LIGHT (MIL) MAY FAIL TO ILLUMINATE IN RESPONSE TO AN EVAPORATIVE SYSTEM LEAK AND/OR MAY ILLUMINATE FALSELY IN RESPONSE TO A SIGNAL FROM THE TRANSMISSION SPEED SENSOR DURING DECELERATION.
Safety Risk
No risk description available.
Remedy
A MODIFIED ECM WILL BE INSTALLED ON AFFECTED VEHICLES.
Certain full size pickups equipped with the Cummins Encore 24 valve diesel engine do not comply with the requirements of CMVSS 1103 - Exhaust Emissions. The fuel management system which advances fuel injector timing for better steady highway fuel economy, also increases the NOx emissions.
Safety Risk
No risk description available.
Remedy
Engine controller software will be reprogrammed.
6,432 vehicles affectedMfr ref: 800Updated June 10, 2026
Certain vehicles may not comply with CMVSS 1101 - emission device. The wrong vehicle emission control information label (VECI) may have been installed on the subject vehicles.
Safety Risk
No risk description available.
Remedy
Correct VECIlabel along with installation instructions will be mailed to owners.
261 vehicles affectedMfr ref: 802Updated June 10, 2026
ON VEHICLES WITH 5.8 LITRE ENGINES, THE VACUUM LINES FOR THE EXHAUST GAS RECIRCULATION (EGR) AND THERMACTOR EMISSIONS SYSTEMS MAY BE DAMAGED BY CONTACT WITH THE EGR VALVE AND TUBE ASSEMBLY. THE VACUUM LINES MAY EITHER DEVELOP A LEAK OR FUSE SHUT FROM THE CONTACT WITH THE HOT EGR VALVE AND TUBE ASSEMBLY.
Safety Risk
No risk description available.
Remedy
VEHICLES WILL BE INSPECTED AND VACUUM LINES WILL BE REPAIRED IF NECESSARY. ALL LINES WILL BE REPOSITIONED AND RETAINED WITH A TIE STRAP.
659 vehicles affectedMfr ref: 90E93Updated June 10, 2026
NOTE: VEHICLES EQUIPPED WITH 5.7 LITRE ENGINES.
THE EXHAUST GAS RECIRCULATION (EGR) VALVE COULD FAIL DUE TO INTERNAL CORROSION. THIS COULD RESULT IN THE VEHICLE FAILING TO MEET APPLICABLE EMISSIONS REQUIREMENTS.
Safety Risk
No risk description available.
Remedy
DEALERS WILL INSPECT THE EGR VALVE FOR PART NUMBER AND REPLACE, IF NECESSARY, WITH A NEW DESIGN EGR VALVE.
934 vehicles affectedMfr ref: 98047Updated June 10, 2026
Certain vehicles may not comply with CMVSS 1105 - Evaporative Emissions.
Safety Risk
No risk description available.
Remedy
Dealers will replace the evaporative emission canister purge solenoid valve. Also, the oldsmobile cutlass supreme convertible will have the prom replaced.
27,450 vehicles affectedMfr ref: 98033Updated June 10, 2026
Certain vehicles equipped with the 5.9L Heavy Duty gasoline engine do not comply with the requirements of CMVSS 1101 - Emission Device. The emission system was not correctly programmed within the Powertrain Control Module (PCM) and the Emission Maintenance Reminder Light (EMR) does not illuminate as required.
Safety Risk
No risk description available.
Remedy
The PCM will be reprogrammed (reflashed) with the proper EMR light calibrations.
123 vehicles affectedMfr ref: 817Updated June 10, 2026
Certain vehicles do not comply with the requirements of CMVSS. 1105 - Evaporative Emissions. Vehicles may have an OBD-II (On Board Diagnostics) calibration that causes a false evaporative emission system code to set under certain conditions, resulting in Malfunction Indicator Lamp (MIL) illumination.
Safety Risk
No risk description available.
Remedy
Dealers will reflash the vehicle PCM (Power Control Module) with new calibration software.
5,227 vehicles affectedMfr ref: 99077Updated June 10, 2026
Certain vehicles do not comply with the requirements of CMVSS. 1103 - Exhaust Emissions. The average CO of the subject vehicles may exceed the standard due to insufficient robustness of emission control logic, and calibration of emission parts with extended usage.
Safety Risk
No risk description available.
Remedy
Dealers will install an engine intake kit, which will allow additional air to enter the engine, improving combustion efficiency and lowering the levels of carbon monoxide.
470 vehicles affectedMfr ref: 83910Updated June 10, 2026
Certain V6 Rodeo do not comply with the requirements of CMVSS 1105 - Evaporative Emissions. The rubber purge hose of the Enhanced Evaporative Emission Control System (EVAP) may crack, due to proximity of the exhaust pipe.
Safety Risk
No risk description available.
Remedy
Dealers will install an EVAP pipe and hose assembly using a clearance template, and will inspect routing clearances after installation.
228 vehicles affectedMfr ref: 99059Updated June 10, 2026
NOTE: VEHICLES EQUIPPED WITH 3.8 LITRE ENGINES.
THESE VEHICLES MAY NOT COMPLY WITH C.M.V.S.S 1105 - EVAPORATIVE EMISSIONS. FUEL VAPOUR HOSE MAY NOT BE CONNECTED AT THE FUEL TANK VAPOUR VALVE.
Safety Risk
No risk description available.
Remedy
VEHICLES WILL BE INSPECTED AND FUEL TANK VAPOUR HOSE WILL BE RECONNECTED WHERE NECESSARY.
9,939 vehicles affectedMfr ref: 92E22Updated June 10, 2026
THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 1103 - EXHAUST EMISSIONS. VEHICLES WERE MANUFACTURED WITH INCORRECT EMISSIONS CONTROL SYSTEM VACUUM CONTROL COMPONENTS.
Safety Risk
No risk description available.
Remedy
EXISTING ENGINE EMISSION CONTROL VACUUM COMPONENTS WILL BE REPLACED INCLUDING BOTH THERMACTOR AIR PUMPS.
61 vehicles affectedMfr ref: 90E95Updated June 10, 2026