DFM disabler released

[RG23RST]

Yeah somebody needs to try that with the range module.

You need a scan tool with oscilloscope functionality. DFM solenoids are peak & hold style when active. When it’s not active there’s always some millisecond level current pulsed through the solenoids to purge air from the oil circuit to the lifter body. Even running around in L9 this behavior is still present.

 

[Antonm]

I’ve given up trying to figure this out. I’m pissed I spent allot of money for this Rube Goldberg machine. Thanks GM.

GM didn't want to spend the time, or spend the R&D money, to make this crap-tastic system happen, they were forced to come up with something by our tyrannical EPA and the ever changing CAFE standards the EPA imposes.

Just like most car manufactures don't really want to jump into EV's because they know they don't sell or and when you actually do sell one, it doesn't make the same margin here in the US. But they need them in their lineup for compliance reasons/ carbon credits so they can still make/ still sell the vehicles that do make them money.
...

 

[Marky Dissod]

GM didn't want to spend the time, or spend the R&D money, to make this crap-tastic system happen,
they were forced to come up with something by our tyrannical EPA and the ever changing CAFE standards the EPA imposes.

No matter what anyone does to 'improve' MpGs, fact remains, our SUVs are
80" wide, over 6' tall, 5000lb / 6000lb bricks.
Newton's laws demand a certain amount of energy be expended to move 'em.

Cylinder valve deactivation and 10speed transmissions are pretty much the proof that
we've crossed the point of diminishing returns in terms of squeezing more MpG from a drop of fuel.
One way or another, end users will pay for every single 'technology', whether it works or not.

 

[fondupot]

I tested with my Launch Creader tonight on a ~30 minute drive, reading live data of the cylinder deactivation system. There were 0 cycles reported on the scanner for the entire drive. I gotta figure out how I can download the report and post it here though.There were also some other live data settings related to the DFM i could read, so I will do another test tomorrow or Saturday.

I have RA007 module installed.

My truck has stock exhaust. If I listen carefully I can hear the 0-cylinder decel/coast mode engage. But as stated, the scanner indicated no cycles of the cylinder deactivation system.

 

[Scarey]

?

 

[Scarey]

I tested with my Launch Creader tonight on a ~30 minute drive, reading live data of the cylinder deactivation system. There were 0 cycles reported on the scanner for the entire drive. I gotta figure out how I can download the report and post it here though.There were also some other live data settings related to the DFM i could read, so I will do another test tomorrow or Saturday.

I have RA007 module installed.

My truck has stock exhaust. If I listen carefully I can hear the 0-cylinder decel/coast mode engage. But as stated, the scanner indicated no cycles of the cylinder deactivation system.

If you could drive the same course with RA007 removed and compare the two. I think the results would be very conclusive.