Vehicle is a 2008 Silverado. For the past few years its had:
P0606 ECM/PCM Processor Internal Fault
P069E Fuel Pump Control Module (FPCM) Requested MIL Illumination
I haven't been able to track down the problem (checked the grounds), haven't opened the fuel pump module to see if water is in it. The truck runs the same as always and get the same gas mileage.
I just tried setting all MIL calls to "No MIL" but the dashboard light is still on. But it appear that i can write to the PCM.
Anyone have an idea on how to permanently turn off the light (other than pulling the bulb) or how to diagnose why it thinks there is an internal processor fault?
Hopefully I didn't just waste a license on this PCM!
Thanks!
Rob