Input Speed Sensor Installation

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Input Speed Sensor (ISS) Assembly

Courtesy of GENERAL MOTORS CORP.

Inspect the input speed sensor (ISS) assembly (250) for the following conditions:
- Cracked or damaged housing
- Worn or missing harness brackets
- Damaged or worn wining or electrical connector
- Loose, missing or damaged mounting bolt insert

Fig 2: Identifying Input Speed Sensor (ISS) O-Ring

Courtesy of GENERAL MOTORS CORP.

Remove the input speed sensor (ISS) O-ring (249) and discard.
Lubricate NEW O-ring (249) with transmission fluid and position in the ISS O-ring groove.
Insert the ISS (250) into oil pump ISS bore and fully seat.
Align ISS bolt insert with oil pump mounting bolt hole.

NOTE: Refer to Fastener Notice .

Install bolt (247).
Tighten: Tighten the bolt to 9-11 N.m (6.6-8.1 lb ft).

Fig 3: Identifying ISS Assembly Wire Harness

Courtesy of GENERAL MOTORS CORP.

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.