On the 2002 Chevy Avalanche, the most common reason for the P0332 is in fact, water intrusion into the Bank2 Knock Sensor. It’s actually been a known problem on these engines for quite some time. There is a fix for it however. The sensor and most commonly the wire harness to the sensor will need to be replaced. During installation, a bead of silicone around rubber grommet will keep the issue from happening again. Unfortunately, it’s just a design/material flaw. To gain access to the Knock Sensor, the Intake Manifold will need to be removed. The Knock Sensor sells for around $94 and the wire harness is around $175 (Dealer-item only). The Labor Time Guide calls for 2.7 hours to replace the Knock Sensor plus an extra half-hour for the harness. Labor rates vary from shop to shop, so what you pay for labor will effect the bottom line. For a job of this type, a “fair” labor rate can by anywhere from $85-$125 per hour.
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