Hi, I have a 2007 GMC envoy with 200,000 miles on it 4.2L I6 4l60e, 4x4, and I am having bad vibration in my steering wheel and floor board. I have changed spark plugs, motor mounts, spark plug boots, new drive belt with tensioner and pulley, new power steering pump,new ac compressor, new camshaft actuator, I have checked all over the exhaust for a leak but cannot find. There is zero check engine light on and the engine runs amazing very quiet and lots of power. Transmission was just rebuilt. I have been chasing this down and still have not had any luck. Can someone point me in the right direction.
bad vibration in my steering wheel and floor board.
when?
Sorry only at idle in all gears, goes away when you drive
maybe the harmonic balancer is damaged.
Did you buy good quality mounts?
I did buy OEM mounts, Everything I have replaced has been OEM parts,I wanted to make sure I wasn't going to have any problems, Is there a way to see if the harmonic balancer is bad
Also thank you for the reply
Visually. Other than that, I don't know any way other than replacing it.