Last post on Mar 08, 2013 at 8:59 AM
You are in the Chevrolet Silverado & GMC Sierra
What is this discussion about?
Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck
#257 of 259 Re: 2011 GMC 2500 6.0 [andrewsgmc]
Jan 14, 2013 (4:34 pm)
i have a 2012 silverado quad cab that vibrates at just under 1500 rpm 45 mph. Dealer told me thats when the engine go's into 4 cylinder mode. It does the same thing at idle. I was wondering how i was getting 21 mpg with this truck. Thoroughbred Chevrolet of Chandler Arizona gave this info.
#258 of 259 Re: 2005 Gmc sierra 2500hd hum/vibration at 60 & 70 [robert1978]
Mar 06, 2013 (7:28 pm)
Robert1978, I just started having the same issue with my 04 z71. Your description of the hum/resistance/vibration is exactly what I'm experiencing. Did you ever reach a conclusion as to the cause? Any chance it's an easy/inexpensive fix?
#259 of 259 Re: 2003 Chevy Silverado hum/vibration at 60 & 70 [royva]
Mar 08, 2013 (8:59 am)
did they charge you for the it