Why is my GMC Silverado cat monitor not running?
Why is my GMC Silverado cat monitor not running?
Even after new catalytic converters and oxygen sensors were installed and computer reset. I can not find anything online. All five other monitors are complete. I’m not sure if I am doing the right drive cycle. It may several complete drive cycles in order to get the catalyst monitor to run.
How to run EVAP monitor on Chevy Silverado?
1. Drive 5 min at steady speed between 30 and 60 mph 2. Stop vehicle and idle engine for 4 minutes. 3. Turn engine off. Remove ignition key. The ECU will run the EVAP Monitor once the engine has been shut down and ignition turned off.
How to run a secondary air monitor on a Chevy Silverado?
1. Idle vehicle 5 minutes (achieve closed loop) 2. Accelerate and drive for 1 min at steady speed above 50 mph 3. Slow vehicle down to 20 mph. Do not use brake clutch, or shift gears. 4. Repeat steps two and three 5 times.
How to run catalyst monitor on GMC Silverado?
Along with the same tests being performed as in step C, the catalyst monitor is now running. As mentioned above, it may take several complete drive cycles in order to complete the catalyst monitor portion of the GMC drive cycle. F. Start slowing down. Begin to decelerate by letting off the gas pedal and without touching the brake (or clutch).
Even after new catalytic converters and oxygen sensors were installed and computer reset. I can not find anything online. All five other monitors are complete. I’m not sure if I am doing the right drive cycle. It may several complete drive cycles in order to get the catalyst monitor to run.
1. Drive 5 min at steady speed between 30 and 60 mph 2. Stop vehicle and idle engine for 4 minutes. 3. Turn engine off. Remove ignition key. The ECU will run the EVAP Monitor once the engine has been shut down and ignition turned off.
Along with the same tests being performed as in step C, the catalyst monitor is now running. As mentioned above, it may take several complete drive cycles in order to complete the catalyst monitor portion of the GMC drive cycle. F. Start slowing down. Begin to decelerate by letting off the gas pedal and without touching the brake (or clutch).
1. Idle vehicle 5 minutes (achieve closed loop) 2. Accelerate and drive for 1 min at steady speed above 50 mph 3. Slow vehicle down to 20 mph. Do not use brake clutch, or shift gears. 4. Repeat steps two and three 5 times.
