Hummer H2. Manual — part 1474

IMPORTANT: Perform the CKP System Variation Learn Procedure when the crankshaft

position sensor is removed or replaced.

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

2004 Hummer H2

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 171: View Of Starter
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the negative battery cable.

2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

3. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.

2004 Hummer H2

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 172: Crankshaft Position (CKP) Sensor
Courtesy of GENERAL MOTORS CORP.

4. Disconnect the crankshaft position (CKP) sensor electrical connector.

Fig. 173: View Of CKP Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.

5. Clean the area around the CKP sensor before removal in order to avoid debris from entering the engine.

6. Remove the CKP sensor retaining bolt.

7. Remove the CKP sensor.

Installation Procedure

1. Install the CKP sensor.

2004 Hummer H2

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 174: View Of CKP Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.

2. Install the CKP sensor retaining fastener.

Tighten: Tighten the bolt to 25 N.m (18 lb ft).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2