2500HD vibration.
So I test drove a 2005 2500HD with low miles the other day. Truck is truly flawless but it has a vibration at around 40-50mph. I'm reading online that it's called "frame beaming". I found a GM serv...
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Don on a GMT-800 ex/crew cab there are three bolts on each side of the cab and one on each side of the radiator support. 8 in total.
There are 4 on each side of the pick up box, 8 in total. All bolts come up from the bottom through the mounts into blind nuts welded to the body. Don't even need to open the doors to get the body mount bolts loose.
Lifting the cab enough, one side at a time, just enough to remove the rear body mounts would not bend the bolts on the opposite side as there is enough flex in the rubber mounts. There is enough flex in the brake lines, hoses, wiring, steering shaft, etc. to allow you to do this.
The pickup box bolts directly to the frame. There is no need to remove the pickup box bolts to replace the rear cab mounts.
There are 4 on each side of the pick up box, 8 in total. All bolts come up from the bottom through the mounts into blind nuts welded to the body. Don't even need to open the doors to get the body mount bolts loose.
Lifting the cab enough, one side at a time, just enough to remove the rear body mounts would not bend the bolts on the opposite side as there is enough flex in the rubber mounts. There is enough flex in the brake lines, hoses, wiring, steering shaft, etc. to allow you to do this.
The pickup box bolts directly to the frame. There is no need to remove the pickup box bolts to replace the rear cab mounts.
