kolar228

Howdy, My 2015 z71 ltz has a vibration at about 42-45 mph, Had it into the dealership, they had it for 4 days and said they had the driveshaft rebalanced. The vibration is reduced but still their. On inspection when I got home It looked like a weight was welded on by the diff. But NO signs of the driveshaft being removed ?. Now it is back with a collasped lifter. waht else can go wrong. Just a little on me I forced into retirement from GM in 2008. From GM Truck & Bus in Pontiac, Mich. Now known as the north american truck plant. I have done about every job their but mostly in repair and inspection. Roll test Inspector,Road test inspector, Heavy repair mechanic in Heavy and light trucks and Buses. It seems that the service tech DON'T listen to the customer. I will keep you posted.