I have a 07 LTZ which sure enough developed the oil consumption problem at about 35K.
I had applied the fix by GM (fit new rocker cover and oil deflector) but the problem slowly came back.
Bought a Hypertech tuner to turn off AFM, only to sadly find that they do not offer this option for 07 models!
So I studied the service manuals and worked out a way to turn off AFM myself. This seemed to stop the oil consumption even though a DTC is generated.
Now thinking whether I should change my Avalanche for a more powerful 6.0, 6-speed 2009 model, the last model year that a 6.0 was available.
Does anyone have any thoughts and/or oil consumption comments about the 09+ models?
Was the oil consumption problem ever completely fixed by GM?
I had applied the fix by GM (fit new rocker cover and oil deflector) but the problem slowly came back.
Bought a Hypertech tuner to turn off AFM, only to sadly find that they do not offer this option for 07 models!
So I studied the service manuals and worked out a way to turn off AFM myself. This seemed to stop the oil consumption even though a DTC is generated.
Now thinking whether I should change my Avalanche for a more powerful 6.0, 6-speed 2009 model, the last model year that a 6.0 was available.
Does anyone have any thoughts and/or oil consumption comments about the 09+ models?
Was the oil consumption problem ever completely fixed by GM?