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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 297 (Engine Control System & Fuel System - 2.9L - Introduction, Service & Repair) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Sensor 1 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Canyon and 2009 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use special anti-seize compound on the HO2S threads. The compound consists of graphite suspended in fluid and glass beads. The graphite burns away, but the glass beads remain, making the sensor easier to remove. New service sensors already have the compound applied to the threads. If you remove an oxygen sensor and if for any reason you must install the same oxygen sensor, apply the anti-seize compound to the threads before reinstallation.
    Fig 1: View Of HO2S
    GM1769039Courtesy of GENERAL MOTORS CORP.
  1. Coat the threads of the HO2S with the anti-seize compound P/N 5613695, or equivalent if necessary.
  2. Thread the HO2S into the exhaust manifold by hand.
    3. CAUTION: Refer to Component Fastener Tightening Caution .
  3. Using the J 39194-B  , tighten the HO2S. See Special Tools .

    Tighten:  Tighten the HO2S to 42 N.m (31 lb ft).

    4. Fig 2: Removing connector position assurance (CPA) retainer
    GM1769037Courtesy of GENERAL MOTORS CORP.
  4. Install the HO2S sensor electrical connector to the camshaft cover.
  5. Connect the engine wiring harness electrical connector (1) to the HO2S electrical connector.
  6. Install the CPA retainer.
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