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Discussion Starter #1
About a year ago I had the egr block done along with eflive put in but only a tow tune and turbo brake and the egr delete. Now for about a year when I first drive it coming to a stop I hear a knocking sound coming from the transmission when slowing down. But when the engine and tranny are warmed up it goes a way, but today after driving for 15 miles I did notice it once after everything was warmed up. I have also notice when the air temp is above 70 degrees I don't hear it when starting out. Just wondering if anyone else had this issue.

Thanks
 

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Street Sleeper
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614 Posts
I might be a little off and some of the more knowlegable gurus will chime in but I had the same thing happen on an old blazer of mine. Ended up being U-Joints starting to go. Threw in a new set of those and purred like a kitten again.
 

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386 Posts
in the newer 1500s it can be the splines of the driveshaft yoke short grease. My brothers 07 does that from day one.
 
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