GREY SMOKE

I Have A 2004 2500hd Chevy With 15238 Miles And All The Sudine Started Smoking After A Cold Start Only Smoke For About 5 Or 8 Sec The Smoke...

Every Now And Then, When I Start My Truck Look I Will Get A Big Puff Of Gray Smoke Out Of The Exhaust. It Doesn't Do It All Of The Time...

So, I Noticed A Wire Hanging From Underneath The Cowl Plugged Into The Air Box Headed Into Throttle Body, Helped A Little With The Grey...