Cartridge rust is jamming the unison ring up. Pull position sensor and plug back in. KOEO should read 100%. Slowly depresses sensor, position will start counting down to 0, then read 100% again. If this reads ok reinstall sensor and command vanes 0-100% with engine running. Vanes should sweep full range within a second. If slow response, pull turbo and fix/replace
P2563 and P003A
- Thread starter shakenfake
- Start date
Yeah I've done that. Vanes command fine and act fine. It is not the unison ring. I'm just about positive we are looking at a wiring issue or bad solenoid.
Just as a small update that does not mean a whole lot to this thread but figured I would throw it in here.
The CEL is only setting for P2510. I have cleared the CEL twice this week, the first time the only codes were P2510 and P2610. The second time P2563 and P003A were intermittent but not set and P2510 was confirmed. I'm not sure if I should try and get the ECM flashed by the dealer or not.
Just as a small update that does not mean a whole lot to this thread but figured I would throw it in here.
The CEL is only setting for P2510. I have cleared the CEL twice this week, the first time the only codes were P2510 and P2610. The second time P2563 and P003A were intermittent but not set and P2510 was confirmed. I'm not sure if I should try and get the ECM flashed by the dealer or not.
Is this the correct ground diagram for the LBZ? I found this off the GM Upfitter website and this is my first time on that site, kind of hard to navigate for me but I may just be an idiot.
Anyway I plan on cleaning all of the main engine grounds which I believe there to be 5(?) GND Zone 3, 6, 5, 7 and 4. The rest seem to be for stuff inside of the truck. This diagram includes things like "Flex Fuel Sensor" but I believe that all the trucks use this ground setup is that correct?
Also my batteries are two different brands and two different ages. Duralast 9/19 and ACDelco 5/20. Worth replacing to eliminate battery issues? I was planning on getting them tested but am open to starting fresh on the truck.
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Ended up replacing both batteries and fixing some of the battery wiring on December 4th. Seemed to remove the CEL for the P2510 and P2610 I was getting.
My P2563 doesn't pop a CEL and is intermittent. I am going to live with it since it has zero effect on driving at the moment. I have not seen P003A.
My P2563 doesn't pop a CEL and is intermittent. I am going to live with it since it has zero effect on driving at the moment. I have not seen P003A.
I am now getting a CEL for the P2563 code. P003A is just intermittent I believe. Haven't tested anything to see what has maybe changed and caused it to throw a CEL but this has sort of expedited my turbo cleaning.
Still think it is the solenoid going out. Truck has zero drivability issues and it seems like my mileage is normal.