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My 2014 GMC Savana Cargo Van idles at ~500 RPM (both in and out of gear with A/C on and off) and the Van starts shaking. I’ve taken it back to the dealer twice, and each time they tell that there are no codes present, and that everything is normal and ok. Sitting at red lights feeling my $35,000 Van shake like an old car is VERY annoying!! I don’t know what to do next. ANY SUGGESTIONS?


THE WHOLE STORY: I bought a new 2014 GMC 3500 Savana Cargo Van in May 2014 from Ed Rinke in Centerline, Mi. From the very beginning, whenever I started the Van cold, it had a loud ticking sound, and the oil pressure would often drop from a normal of 40 down to 20 lbs. when at idle (in and out of gear). In June 2014 I took the Van (with 650 miles on the odometer) back to Rinke to complain. I played a tape of the engine ticking sound, and after letting the Van sit for 2 hours to cool down, we started the engine again, and the service manager told me that the engine noise was normal, and that everything was OK.


I continued to drive the Van below the break-in speed listed in the manual, and the engine continued to get worse. A rough idle that made the Van shake (both in and out of gear, with A/C on and off) started to occur, and continued to get worse. In addition, there was hesitation on acceleration, especially on long inclines, and the loud ticking sound continued on startup.


In September (with ~ 2800 miles on the odometer) I took the Van back to Ed Rinke to complain. After an hour, they returned the Van to me and said there were no codes present, and that they “couldn’t duplicate the problems at this time”. When I read that statement on the Invoice, I laughed and said to the Service Advisor “You’re kidding about not being able to duplicate the problem, right?” I told him “Let me lift the hood, and you can watch everything shake with your own eyes”. The Service Advisor shrugged his shoulders and walked away. THAT MADE ME VERY ANGRY!

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Definitely sounds like something is wrong, shouldn't be shaking like you describe or losing oil pressure like that unless the gauge is just giving a faulty reading. The 6.0 Vortec's are a bit clicky (and frankly so are the rest of the GM engines) and mine has made minor clicks when warming up since day one, even when it is fully warmed up it still clicks a little, but has never shook like you describe. I've always attributed some of the clicking noises to the cold start timing / fuel delivery curve and the exhaust system being cold as it has a more raspy sound when it's cold, all which changes and quiets down as it warms up. The injectors are a bit noisy as well, so may be the majority of what you are hearing. Unfortunately it sounds like you've got one of those dealers that wants to sell you something but their "after the sale" service is not so good. Being it is new and under warranty I'd take it to another dealer for a second opinion.

Edited by ifixedit
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My dad's got a 99 2500hd with the 6.0, almost 150k miles on it, smooth as glass.


Second whats been said above. Take it in. That isn't normal.


Also, oil pressure should be HIGHER when the vehicle is cold, especially when accelerating, because its thicker and harder to push around. Not lower.


All LSx motors are clicky as they get old, but yours doesn't sound like an old one. You shouldn't be seeing click/tick/rattle until you're in the 150k mile+ range.

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Agree! My truck just hit 200,000 rounds on the clock and has always had about 45 PSI oil pressure when cold, will drop to just under 40 PSI at idle when warm but back to about 45 PSI when driving. Mine is only a bit noisier now than when new, again just very minor clicking, mostly now on start up when it's like -25 F outside, but hey, can't say I can blame the poor thing! ;-)


Get your truck in to another dealer and have them take a look.

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