- Apr 9, 2012
- 934
Hello all!
My dad is having some issues with his truck, and trying to gauge what the best way to tackle this is. The truck has 112k miles and is an 06 Yukon SLT with the 5.3. We recently just finished work on it about 2 weeks ago. The water pump (bad coolant leak) went out so we replaced that, all the belts, and thermostat. Everything appeared to be fine, while bleeding the system we accidentally left the vent open on top of the engine so coolant was rushing out on the head while filling the system up. My dad poured rinsed the engine bay out and sprayed a bit under the intake plenum to get the coolant out from there. This was about two weeks ago we did the work, fast forward to Christmas day we're driving home and the CEL comes on. Connected the OBD reader and it reads 2 codes, but we can only view the first one which is a P0332 - "Knock Sensor 2 Circuit Low Input (Bank 2)." The truck still appears to have power, but has a very slight miss at idle. We didn't have torque open to monitor it, but just having the hood open and leaning into the engine bay you can feel when it misses.
I take it that some of the water found its way into the knock sensor and probably shorted/killed it? We did clear the code and drove it around locally and it was fine, then when I took it out onto the highway not even 10 mins in and the CEL came on with the same code. The job doesn't seem too bad, aside from moving all the wiring out of the way and cleaning the surfaces for the new gaskets. Is there anything we should watch out, or replace while in there? We intend to do the wiring harnesses and both sensors.
My dad is having some issues with his truck, and trying to gauge what the best way to tackle this is. The truck has 112k miles and is an 06 Yukon SLT with the 5.3. We recently just finished work on it about 2 weeks ago. The water pump (bad coolant leak) went out so we replaced that, all the belts, and thermostat. Everything appeared to be fine, while bleeding the system we accidentally left the vent open on top of the engine so coolant was rushing out on the head while filling the system up. My dad poured rinsed the engine bay out and sprayed a bit under the intake plenum to get the coolant out from there. This was about two weeks ago we did the work, fast forward to Christmas day we're driving home and the CEL comes on. Connected the OBD reader and it reads 2 codes, but we can only view the first one which is a P0332 - "Knock Sensor 2 Circuit Low Input (Bank 2)." The truck still appears to have power, but has a very slight miss at idle. We didn't have torque open to monitor it, but just having the hood open and leaning into the engine bay you can feel when it misses.
I take it that some of the water found its way into the knock sensor and probably shorted/killed it? We did clear the code and drove it around locally and it was fine, then when I took it out onto the highway not even 10 mins in and the CEL came on with the same code. The job doesn't seem too bad, aside from moving all the wiring out of the way and cleaning the surfaces for the new gaskets. Is there anything we should watch out, or replace while in there? We intend to do the wiring harnesses and both sensors.