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).
How to reset the EVAP system monitor drive cycle?
Connect the Scan Tool to the data link connector (DLC). Use the Scan Tool to clear any stored DTC’s and to reset the Onboard Diagnostic Monitors. Bring up the Readiness Code for the EVAP System Monitor. 2. Start the engine (cold); IAT PID from 40-100ºF (this step requires a key “off” period of at least 8 hours). 3.
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.
What should I do if my GMC monitor won’t work?
Begin to decelerate by letting off the gas pedal and without touching the brake (or clutch). Your GMC must slowly coast down to 0 mph. The drive cycle is now complete. Using a scan tool check the status of the monitors. If one or more are not yet complete/ready, perform the drive cycle again.
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.
Why is my Chevy Silverado not running emission monitor?
We understand your Chevy Silverado is having difficulty getting certain emission monitors to complete (become Ready). The emission monitors are programmed to run while your vehicle is being normally operated. However, due to different driving habits, the criteria required to run a monitor may not always be met.
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.
Why is my EVAP not working on my G8?
Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better.