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2004 Chevrolet TrailBlazer

//2004 Chevrolet TrailBlazer

2004 Chevrolet TrailBlazer

Chevrolet TrailBlazer

Mileage
168,344
Service Date
1/22/2021
Services Performed
  • INSPECTED FOR DIAGNOSTIC TROUBLE CODES. – NO CODES WERE STORED IN MEMORY. TEST DROVE THE VEHICLE WHILE MONITORING THE LIVE DATA STREAM VALUES. – THE LONG TERM FUEL TRIM WAS EXCESSIVE, RANGING FROM -13 TO +19. – THE OXYGEN SENSORS APPEAR TO BE OPERATING CORRECTLY WITH A MODERATE INDICATION OF CATALYTIC CONVERTER INEFFICIENCY DUE TO THE HIGHER BANK 2 VOLTAGE. OBSERVED THE COOLANT TEMPERATURE VALUE ON THE LIVE DATA STREAM WAS LOWER THAN EXPECTED. UTILIZING THERMAL IMAGING, INSPECTED THE ENGINE TEMPERATURE NEAR AND AROUND THE COOLANT TEMPERATURE SENSOR. – THE ACTUAL TEMPERATURE WAS APPROX. 20F DEGREES HIGHER THAN INDICATED. – OBSERVED GLITCH WITH THE COOLANT TEMPERATURE READING DURING THE TEST DRIVE, THE TEMPERATURE INCREASED BY 15 -20 DEGREES INSTANTLY. OBSERVED GLITCH IN THE OIL PRESSURE GAUGE READING, GAUGE WOULD DROP OUT AND THE "CHECK GAUGES" LIGHT WOULD ILLUMINATE WHEN THE ENGINE RPM'S INCREASED. RECOMMEND REPLACEMENT OF THE COOLANT TEMPERATURE SENSOR AND THE OIL PRESSURE SENSOR.
  • REMOVED AND REPLACED THE ENGINE COOLANT TEMPERATURE SENSOR AND THE OIL PRESSURE SENSOR. RESET THE FUEL TRIM VALUES. TEST DROVE THE VEHICLE WHILE MONITORING THE LIVE DATA STREAM VALUES. – THE LONG TERM FUEL TRIM VALUES, -6 TO +3. MONITORED THE ENGINE COOLANT TEMPERATURE. – THE COOLANT TEMPERATURE INCREASED AS EXPECTED DURING THE TEST DRIVE WITH NO DROP OUTS OR GLITCHES OBSERVED. THE ENGINE OIL PRESSURE GAUGE DID NOT EXHIBIT ANY FURTHER GLITCHES. FURTHER DIAGNOSIS WILL BE REQUIRED IF FUEL MILEAGE IS NOT AS EXPECTED. NOTE: OPERATING THE VEHICLE WITH THE TRANSFER CASE IN 4WD OR 4WD AUTO MODES CAN REDUCE THE FUEL MILEAGE. OPERATING THE VEHICLE WITH THE HVAC IN THE DEFROST MODE CAN ALSO REDUCE THE FUEL MILEAGE, THE AIR CONDITIONING COMPRESSOR IS ENGAGED WHEN THE HVAC IS IN DEFROST MODE.
  • REPLACED THE WINDSHIELD WIPER BLADES.
 
Ann-Marie H. gave our service a 5 star review on 1/22/2021
2021-01-23T23:03:28+00:00