Greetings everyone,
I'm having some repeat issues with the knock sensors on my 2005 Yukon XL Denali. I've change both sensors with AC Delco sensors and a genuine GM harness, all torque specs were adhered to and mating surfaces cleaned. I also make sure to disconnect the positive battery cable and ground it to clear the memory. I have now done this 3 times over the last 6 months or so and get either 1 or both knock sensor codes shortly after changing them, the most recent time the codes posted the next day. I would like to not have to pull the intake off anymore, so any thing else I should look at would be greatly appreciated.
I'm having some repeat issues with the knock sensors on my 2005 Yukon XL Denali. I've change both sensors with AC Delco sensors and a genuine GM harness, all torque specs were adhered to and mating surfaces cleaned. I also make sure to disconnect the positive battery cable and ground it to clear the memory. I have now done this 3 times over the last 6 months or so and get either 1 or both knock sensor codes shortly after changing them, the most recent time the codes posted the next day. I would like to not have to pull the intake off anymore, so any thing else I should look at would be greatly appreciated.
) at the PCM. Pull both of them and check for cleanliness and pin fitment. Water can migrate into the connectors and cause "green crusties" or corroded connections. Have some Deoxit or electronics cleaner handy. If the connector gaskets are letting water in, think about putting on some new gaskets.
