I've heard this is not uncommon, so what's the deal with the L5P turbo actuator waking up at odd hours for no reason, thus draining the batteries? A quick search, and think I see possible link to a corrosion in the NOX modules connectors. But not familiar with that actuator, guessing it's CANbus controlled, or is it hardwired to ECM?
A buddy called me to come check out his bone stock 2500 that had just rolled over 100k, because it set a MIL and was saying power reduction within XX miles. Quick scan, spotted these lost comms to NOX Modules and TCM.. Knowing GM's daisy chained structure, I instantly said likely has moisture in a plug somewhere. Cleared the codes, he drove it next day, and called to say the mileage countdown had stopped..
My question, will a flaky CANbus connection cause the turbo actuator to randomly wake up and check / adjust vane position? I monitored it's normal wake up movement when you open door and bus comes alive. Also then move to opposite range set when the head unit finally goes sleepy. Also checked operating range with EFIlive, seems fine. But what my friend reports, is when truck locked and keys in the house, he's hearing that actuator moving for no reason when everything else on the bus is obviously asleep. Just replaced the OEM batteries few months back, and says if leaves truck parked for two week, batteries are drained.
Curious becuse couple techs have said, ah that's just a normal L5P. To me, anyting CANbus waking up unattened, tells me it's always powered, and using some Wake On Data logic.. But he claims nothing else on the truck is responding, like dash or head unit.. Just some weird noise under the hood..
A buddy called me to come check out his bone stock 2500 that had just rolled over 100k, because it set a MIL and was saying power reduction within XX miles. Quick scan, spotted these lost comms to NOX Modules and TCM.. Knowing GM's daisy chained structure, I instantly said likely has moisture in a plug somewhere. Cleared the codes, he drove it next day, and called to say the mileage countdown had stopped..
My question, will a flaky CANbus connection cause the turbo actuator to randomly wake up and check / adjust vane position? I monitored it's normal wake up movement when you open door and bus comes alive. Also then move to opposite range set when the head unit finally goes sleepy. Also checked operating range with EFIlive, seems fine. But what my friend reports, is when truck locked and keys in the house, he's hearing that actuator moving for no reason when everything else on the bus is obviously asleep. Just replaced the OEM batteries few months back, and says if leaves truck parked for two week, batteries are drained.
Curious becuse couple techs have said, ah that's just a normal L5P. To me, anyting CANbus waking up unattened, tells me it's always powered, and using some Wake On Data logic.. But he claims nothing else on the truck is responding, like dash or head unit.. Just some weird noise under the hood..
