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Home >> Hummer >> 2009 >> H3 Base, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Off-Vehicle Repair Instructions >> Input Speed Sensor Installation

Input Speed Sensor Installation

    Fig 1: View Of Input Speed Sensor (ISS) Assembly
    GM1552966Courtesy of GENERAL MOTORS CORP.
  1. Inspect the input speed sensor (ISS) assembly for the following conditions:
    • Cracked or damaged housing
    • Worn, broken or missing harness brackets; replace the ISS assembly if necessary
    • Damaged or worn wining or electrical connector
    • Loose, missing or damaged mounting bolt insert
    2. Fig 2: Identifying Input Speed Sensor (ISS) O-Ring
    GM1552967Courtesy of GENERAL MOTORS CORP.
  2. Remove the ISS O-ring (249) and discard.
  3. Lubricate NEW O-ring (249) with transmission fluid and position the O-ring as shown.
  4. Insert the ISS (250) into oil pump ISS bore and fully seat.
  5. Align ISS bolt hole insert with the oil pump mounting hole.
    6. CAUTION: Refer to Fastener Caution .
  6. Install bolt (247). Tighten the bolt to 9-11 N.m (6.6-8.1 lb ft).
    7. Fig 3: Identifying ISS Assembly Wire Harness
    GM1552968Courtesy of GENERAL MOTORS CORP.
    NOTE: Ensure the ISS brackets securely fasten the wiring harness to the pump housing.
  7. Route the ISS assembly (250) wire harness as shown. Install harness bracket #1 and #2 in the locations shown. Ensure the wire harness lays flat against the pump housing.
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