Towed my heaviest load yesterday!!

[MSalvatore]

could be a warped flywheel. at least that is what it sounds like.

 

[Todd T]

shudder could be U-joints or a bad carrier bearing. 2WD extended cab's have two D shafts (that's 4 U-joints with a carrier in the middle)

 

[johncameron]

shudder could be U-joints or a bad carrier bearing. 2WD extended cab's have two D shafts (that's 4 U-joints with a carrier in the middle)

I was thinking u-joints too. It did it towing this trailer today which weighs somewhere in the 6K range. I guess I'll have to check it out further.

 

[jlhartak]

I don't know if the short bed 2wd has a two piece driveshaft? If it does, the center carrier bearing rubber mount may be causing the vibration in the lower gears until the driveshaft rpm increases enough to even out the pulses caused by the u-joint angle. You may also have loose/broken motor/transmission mount/mounts.



Although you didn't exceed the GCWR for your truck it looks like the trailer has 5 lug wheels which should mean 3500lb. axles by two equals 7000lbs gross trailer weight. With 6000+lbs. of rock plus the trailer (2000lbs?) just a little over. Looks like a well balanced load, and leaving lots of extra stopping room is the key.

 

[Forrest Nearing]

his truck does have a 2 piece DS. not sure about the autos, but I know the 6sp trucks do

 

[hammersley]

Man I don't miss the salt or corrosion that you

have on the chassis - that brings back days when I lived in Pennsylvania..... glad to not have that problem now... .