Knock sensor

Tiny
HYDRO88
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
Tools I need to change a knock sensor from 2002 chevy silverado
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Wednesday, January 12th, 2011 AT 8:27 AM

3 Replies

Tiny
HYDRO88
  • MEMBER
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Wednesday, January 12th, 2011 AT 8:30 AM
Tiny
MERLIN2021
  • EXPERT
You didnt say wich V8 you have but for the 4.8, 5.3 and 6.0 it's under the intake manifold in the valley. Manifold needs to come off!
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Wednesday, January 12th, 2011 AT 8:52 AM
Tiny
MERLIN2021
  • EXPERT
ENGINE VALLEY COVER REPLACEMENT

Removal Procedure

Fig. 68: View Of Knock Sensor Wire Harness
Courtesy of GENERAL MOTORS CORP.
1. Remove the intake manifold. Refer to Intake Manifold Replacement.
2. Gently pry up the rubber covers.
3. Disconnect the knock sensor electrical connectors.
Fig. 69: View Of Knock Sensors
Courtesy of GENERAL MOTORS CORP.
4. Remove the knock sensors.
Fig. 70: View Of Engine Valley Cover, Gasket & Bolts
Courtesy of GENERAL MOTORS CORP.
5. Remove the engine valley cover bolts.
6. Remove the engine valley cover and gasket.
7. Discard the old gasket.
Fig. 71: View Of Knock Sensor Oil Seals & Cover
Courtesy of GENERAL MOTORS CORP.
8. Remove the knock sensor oil seals (1) from the cover (2).
9. Clean and inspect the engine valley cover. Refer to ENGINE VALLEY COVER
CLEANING & INSPECTION.
Installation Procedure

Fig. 72: View Of Knock Sensor Oil Seals & Cover
Courtesy of GENERAL MOTORS CORP.
1. Lubricate the NEW knock sensor seals (1) with clean engine oil.
2. Install the knock sensor oil seals (1) into the engine valley cover (2).
Fig. 73: View Of Engine Valley Cover, Gasket & Bolts
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: All gasket surfaces should be free of oil or other foreign material
during assembly.
NOTE:
Refer to Fastener Notice in Cautions and Notices.
3. Install the engine valley cover and a NEW gasket onto the engine block.
4. Install the engine valley cover bolts.
Tighten: Tighten the bolts to 25 N.M (18 lb ft).
Fig. 74: View Of Knock Sensors
Courtesy of GENERAL MOTORS CORP.
5. Install the knock sensors.
Tighten: Tighten the sensors to 20 N.M (15 lb ft).
Fig. 75: View Of Knock Sensor Wire Harness
Courtesy of GENERAL MOTORS CORP.
6. Connect the knock sensor electrical connectors.
7. Push down on the rubber covers.
8. Install the intake manifold. Refer to Intake Manifold Replacement.
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Wednesday, January 12th, 2011 AT 8:58 AM

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