I found a TSB for the code that recommends replacing the sensors and the harness.
Did you replace the harness when you did the sensors?
Roy
File In Section: 06 - Engine/propulsion System
Bulletin No: 02-06-04-023
Date: May, 2002
TECHNICAL
Subject:
Audible Spark Knock (Detonation), MIL Illuminated, DTC P0332 Set (Replace Rear Bank Knock Sensor and RTV Area Around Sensor)
Models:
1998-2002 Chevrolet Camaro, Corvette
1998-2002 Pontiac Firebird with 5.7L Engine (VIN G - RPO LS1)
1999-2002 Chevrolet and GMC C/K Pickup and Utility Models (Avalanche, Silverado, Sierra, Tahoe, Suburban, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL)
with 4.8L, 5.3L or 6.0L Engine
(VINs V, T, Z, N, U - RPOs LR4, LM7, L59, L09, LQ4)
Condition
Some customers may comment on a mild to severe engine ping (commonly referred to as spark knock), usually worse during acceleration and/or an illuminated MIL. Upon investigation, the technician may find DTC P0332 set.
Cause
This condition may be the result of corrosion of the rear bank knock sensor due to water intrusion into the sensor cavity. This condition is more apparent on vehicles in which customers frequently wash the engine compartment.
Correction
Replace the rear bank knock sensor and build a dam (wall) around the sensor using RTV to divert water away from the sensor. Use the procedure and part number listed below.
1. Remove the intake manifold. Refer to the Intake Manifold Replacement procedure in the Engine Controls sub-section of the appropriate Service Manual.
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2. Remove the wiring harness assembly from the knock sensor.
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3. Remove the rear bank knock sensor.
4. Install the new rear bank knock sensor.
Tighten
Tighten the knock sensor to 20 N.M (15 lb ft).
5. Install the wiring harness assembly to the knock sensor.
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6. Apply a bead of RTV silicone sealant approximately 9 mm (3/8 in) wide and 6 mm (1/4 in) high along the outside edge of the ridge on the engine block valley cover around the rear bank knock sensor. DO NOT form a complete circle. Leave the rear section open as shown.
7. From the underside of the intake manifold, completely remove the rear intake manifold seal (foam material).
8. Install the intake manifold. Refer to the Intake Manifold Replacement procedure in the Engine Controls sub-section of the appropriate Service Manual.
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Sunday, June 21st, 2020 AT 1:51 PM
