Any TSB's out yet?

By JohnnyD
October 27, 2006 in 1999-2013 Silverado 1500 & Sierra 1500

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JohnnyD

Posted October 27, 2006

Own a 2007 Denali XL. I have a couple issues and wonder if they are known issues or limited to just me.

I have somewhat severe valve train noise or maybe piston slap until warmed up in the morning. Also shifts to higher gears way to early and doesn't want to down shift soon enough when needed for acceleration or going up hills.

Any help is appreciated.

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