Thread: 2015 Gmc sierra
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Old 06-30-2015, 10:12 AM
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alphaman alphaman is offline
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Coming from driving a staight v8 to a vehicle with fuel saver tech. It's different!!
If you havent drivin a vehicle with the fuel saver technology. That could be the problem. I have a hemi and depending on how light or hard you press the gas. A certain rpm range (1000-2000 rpm) activates it which causes the engine to keep switching etc. My hemi has a slight vibration like bc Of that. If I put it in 5th gear which deactivates fuel saver tech. And it doesn't do that.

Try that keep it in 5 gear and see If it still vibrates. The put it in drive which activates the cylinder shut off and check again.

Last edited by alphaman; 06-30-2015 at 10:24 AM.
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