LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2009 >> HHR LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.2L Or 2.4L - Introduction >> Repair Instructions >> Heated Oxygen Sensor 1 Replacement >> Installation Procedure

Installation Procedure

NOTE: A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound applied to the threads. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation.
    Fig 1: Identifying HO2S
    GM1631780Courtesy of GENERAL MOTORS CORP.
  1. If reinstalling the old HO2S, coat the threads with anti-seize compound GM P/N 12377953 or equivalent.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the HO2S.

    Tighten:  Tighten the sensor to 42 N.m (31 lb ft).

    3. Fig 2: Locating ECT Sensor Electrical Connector
    GM1625483Courtesy of GENERAL MOTORS CORP.
  3. If equipped with a manual transaxle, perform the following steps, connect the engine harness electrical connector (3) to the HO2S.
  4. Install the CPA retainer (2).
  5. If equipped with a automatic transaxle, perform the following steps, connect the engine harness electrical connector (3) to the HO2S.
  6. Install the CPA retainer (2).
    7. Fig 3: Identifying HO2S Electrical Connector Clip
    GM1631775Courtesy of GENERAL MOTORS CORP.
  7. Install the HO2S electrical connector clip to the thermostat housing.
  8. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement (LE5, L61) or Exhaust Manifold Replacement (LNF) .
scientia non olet · About LEMON Manuals