What is mode 6 on a Chevy Suburban?

Mode 6 (emissions diagnostics tool) is especially helpful for a well trained smog technician. The Chevy Suburban drive cycle below will complete or make ready your SUV’s emission monitors, including the EVAP monitor, Oxygen Sensor monitor, EGR monitor, Secondary Air Injection, and Catalyst monitor.

How often should I do the drive cycle on my Chevy Suburban?

This ends the drive cycle. Performing the drive cycle on your Chevy Suburban at least twice will ensure all monitors run, including the EVAP monitor, and your Chevy Suburban is ready for the smog check. Should you want to perform specific Monitor self-tests follow the steps below.

What’s the idle time on a Chevy Suburban?

B. Idle Time: Run engine (do not drive) for 2 1/2 minutes with the air conditioner on and rear defroster on. During this period the ECU will be running the Oxygen Sensor Heater self-test, Air Injection System Passive Air test, EVAP Purge “No Flow” test, Misfire Detection.

Is the EVAP still incomplete on my Suburban?

The EVAP, secondary air, and catalyst monitor are still showing as incomplete. I have driven my Suburban 300 miles since the first time I was aware of them not being ready?

How to perform a Chevy Suburban drive cycle?

1. Idle vehicle 5 minutes (achieve closed loop) 2. Drive 5 min at steady speed above 55 mph 3. Drive 2 min at steady 40 mph 4. Drive 2 min at steady 55 mph Prerequisite: No trouble codes present, Engine Coolant Temperature (ECT) is above 75 Degrees (F); barometric pressure (BARO) above 72kPa.

How often should I run the EVAP monitor on my Chevy Silverado?

Performing the drive cycle on your Chevy Silverado at least twice will ensure all monitors run, including the EVAP monitor, and your Chevy Silverado is ready for the smog check. Should you want to perform specific Monitor self-tests follow the steps below.

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.

What happens if you fail an emission test?

Failed emission test In case you reside in a state that requires you to test for emissions every six months, you might realize that you have a faulty EGR valve when you fail the test. You might not be alerted of the EGR problem during the trial, but it is something to watch out for right away. 5. Rough idle

The EVAP, secondary air, and catalyst monitor are still showing as incomplete. I have driven my Suburban 300 miles since the first time I was aware of them not being ready?

What should coolant temp be in Chevy Suburban?

Ensure your Chevy Suburban’s fuel tank is between 1/4 and 3/4 full. Engine coolant temperature must be below 122°F and within 11°F of the ambient air temperature. Do not leave the key on prior to the cold start or the heated oxygen sensor (O2) diagnostic may not run.

What is mode 6 on a Chevy Suburban?