LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2004 >> Tracker 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 2.0L (Troubleshooting & Diagnosis) >> Diagnostic Information & Procedures >> Inspection/Maintenance (I/M) Complete System Set Procedure >> Test Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 1:  Make sure you perform the I/M System Check before performing this test. Failure to do so may result in difficulty updating the status to YES.
  2. 2:  This step is to run the HO2S Heater Tests.Preprogramming the scan tool will reduce the amount of time the oxygen sensor heaters operate while verifying the enable criteria.
  3. 3:  This step is to run the Catalyst Test. The Catalyst Test runs during the specified cruise period.
  4. 4:  This step is to run the EGR Tests. The EGR Tests are run during a gradual deceleration with a closed throttle. The vehicle speed is required in order to maintain a high, steady MAP signal. If the vehicle is not equipped with an EGR System, this step is not necessary and the testing can continue at step 5.
  5. 5:  This step is to run the Oxygen Sensor Tests. These tests run during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period.
  6. 6:  This step is to run the EVAP Tests. These tests run during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period.
  7. 8:  The I/M System Status only reports on whether or not a diagnostic has run, not the outcome of the test. If any emission related DTC sets after the tests are complete, the DTC will require diagnosis.
Inspection/Maintenance (I/M) Complete System Set Procedure

Step Action Yes No
1  Did you perform the Inspection/Maintenance (I/M) System Check? Go to Step 2  Go to Inspection/Maintenance (I/M) System Check 
2 
  1. Preprogram the scan tool with the vehicle information before the ignition is turned ON.
  2. Ensure the vehicle is within the Conditions for Running specified in the supporting text.
  3. Turn OFF all of the accessories, e.g., A/C, blower fan, etc.
  4. Set the vehicle parking brake.
  5. Verify the transmission is in Park for automatic transmissions and Neutral for manual transmissions.
  6. Start the engine.
  7. Idle the engine until the engine reaches operating temperature of at least 70° C (158° F). This may be up to 8-10 minutes depending on the start up coolant temperature.
    8. IMPORTANT: In order for the remaining portion of this test to run, the vehicle must operate in the following conditions:
  8. Acceleration at part throttle to 48-80 km/h (30-50 mph).
  9. Speed maintained for 2 minutes or until the I/M System Status indicator updates to YES
Is the action complete?		 Go to Step 3  -
3 
CAUTION: Refer to Road Test Caution in Cautions and Notices.
In order for the next group of tests to run, the vehicle must operate in the following conditions:
  1. Acceleration at part throttle to 72-105 km/h (45-65 mph).
  2. Maintain this speed without changing the throttle position for 2-3 minutes or until the I/M System Status updates to YES.
Is the action complete?		 Go to Step 4  -
4 
CAUTION: Refer to Road Test Caution in Cautions and Notices.
In order for the next group of tests to run, the vehicle must operate in the following conditions:
  1. Acceleration at part throttle to 88 km/h (55 mph) with this speed maintained for 2 minutes.
  2. Decelerate for 10 seconds while the following criteria is maintained:
    • Throttle is closed
    • NO brake application on either manual or automatic transmission
    • NO clutch actuation on a manual transmission
    • NO manual downshift
    • Vehicle speed remains above 40 km/h (25 mph)
Is the action complete?		 Go to Step 5  -
5 
CAUTION: Refer to Road Test Caution in Cautions and Notices.
In order for the next group of tests to run, the vehicle must operate in the following conditions:
  1. Acceleration at part throttle to 75-89 km/h (45-55 mph) with this speed maintained for 2 minutes.
  2. Deceleration to 0 km/h (0 mph).
  3. Engine idling for 2 minutes while the following criteria is maintained:
    • Service brake depressed
    • Automatic transmission in drive
    • Manual transmission in neutral with the clutch pedal depressed
  4. Acceleration at part throttle to 48-80 km/h (30-50 mph) with this speed maintained for 30 seconds.
Is the action complete?		 Go to Step 6  -
6 
    IMPORTANT: In order for this test to run, the vehicle must operate in the following conditions:
  1. Idle the engine until the engine reaches operating temperature of at least 70° C (158° F). This may be up to 8-10 minutes depending on the start up coolant temperature.
  2. Acceleration at part throttle to 56-89 km/h (35-55 mph).
  3. Operate the vehicle for 20 minutes at speeds of 56 km/h (35 mph) or more.
  4. Operate the vehicle for 3 minutes between 48-80 km/h (30-50 mph) with the throttle position steady.
  5. With a scan tool, observe the I/M System Status display.
Is the action complete?		 Go to Step 7  -
7 With a scan tool, observe the I/M System Status display.
Did all of the I/M System Status indicators update to YES?		 Go to Step 8  Go to the I/M System Set Procedure for the indicated systems
8  With a scan tool, observe the Emission Related DTC portion of the I/M System Status display.
Does the scan tool indicate any Emission Related DTCs set?		 Go to Diagnostic Trouble Code (DTC) List System OK
scientia non olet · About LEMON Manuals