How does Chevy V4 mode work?
When operating in V4 mode, pressurized oil forces the locking pins inward. The pushrod remains in a constant position and does not travel upward and downward. The outer body of the lifter moves upward and downward independently from the pin housing.
Can you turn off Dynamic Fuel Management?
The Dynamic Fuel Management system, therefore, could be improved. In the meantime, customers who don’t want to put up with this yet-to-be-matured technology can simply disable it with the Range Technology Disabler for AFM as well as DFM.
Is AFM bad for your engine?
However, it appears that the AFM causes the oil to get past the pistons, so it enters the combustion chamber. There, it will get burned out, or it will harden and accumulate in the cylinders. If not handled quickly, the pistons or cylinders could get damaged.
What’s the transmission problem on my Silverado Sierra?
I bought a 2011 z71 in July 2011 and the transmission slams in and out of gear while driving or stopping at slow speeds. It even lunges forward when downshifting while coming to a complete stop. It’s really annoying and dangerous for a $41,000 truck. I hope computer update or whatever takes care of it.
Is there a GM hard shift transmission defect?
Ultimately, GM owners and lessees face mounting repair costs because of the alleged defect, the complaint says.
Why is my GM transmission not working properly?
Further, “The shuddering, shaking, jerking and hesitation is related to internal issues within the transmission and/or torque converter causing friction surfaces, hydraulic systems, and gears to not function properly, and resulting in metal shavings being circulated throughout the transmission,” continues the complaint.
When does Silverado 5.3 go to V4?
Some 2011 Silverado 5.3 engine owners don’t know it, but you can see if your Active Fuel Management is working while you are driving. It’s on your Instant Fuel economy gauge. You will see it switch back and forth from V8 to V4. It will always go into V4 when the road grade is declining or you are slowing to stop.