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Home >> GMC >> 2009 >> Envoy 4WD V8-5.3L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Service and Repair >> Overhaul >> Assemble, Disassemble, and Installation >> Input Speed Sensor Installation

Input Speed Sensor Installation




Input Speed Sensor Installation




1. Inspect the input speed sensor (ISS) assembly (250) 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. 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.

Caution: Refer to Fastener Caution (Fastener Caution).

6. Install bolt (247). Tighten the bolt to 9-11 Nm (6.6-8.1 lb ft).





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.