Message came on dic saying low def 727 miles. Did not quite know what that meant. Found out. Gm says it should come on at 1000 miles. Nope. Came on 2 x 727 and 72. There is no way to check the def level. Someone realized this as the newer trucks have gauges or other ways to check. I feel this could become an issue if the vehicle goes into limp mode and no close places to purchase def. I talked to gm. They don't seem to concerned about the whole thing. A simple fix would be to make it like the transmission fluid check. Pull out the dip stick/check the fluid/add fluid if necessary through the same tube that the dipstick came out of. My truck has a tube under the hood where you add def. Again there is no way to see how much you need. You just keep adding till it spits out of the tube. I feel gm should take care of this issue with an update of some sort so a motorist vehicle suddenly starts slowing down on the highway. Thanks for your interest..
2011 Chevrolet Silverado 2500 fuel system complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
The truck had the check engine light come on when we took it to the dealership they replace the fuel pressure regulator. The light soon came back on due to a faulty fuel pump which sent the car into safe mode, which made the car do a nose dive from 55 to 15 in a matter of seconds on a major interstate in atlanta.
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