LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1844 (Engine Controls And Fuel - 2.4L (Lat) - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor 1 Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The oxygen sensor uses a permanently attached pigtail and connector. Do not remove the pigtail from the oxygen sensor. Damage to or removal of the pigtail connector could affect proper operation of the oxygen sensor.
NOTE: The use of excessive force may damage the threads in the exhaust manifold/pipe.
IMPORTANT:
  • The in-line connector and louvered end must be kept clear of grease, dirt or other contaminants. Avoid using cleaning solvents of any type. DO NOT drop or roughly handle the heated oxygen sensor (HO2S).
  • The HO2S may be difficult to remove when the engine temperature is less than 48°C (120°F).
    Fig 1: Identifying Engine Wiring Harness Electrical Connector
    GM1812206Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the connector position assurance (CPA) retainer.
  3. Disconnect the engine wiring harness electrical connector (3) from the HO2S.
  4. Remove the HO2S connector clip from the thermostat housing.
    5. Fig 2: Identifying HO2S
    GM1631780Courtesy of GENERAL MOTORS CORP.
  5. Remove the HO2S using the J 39194-C  .
scientia non olet · About LEMON Manuals