There's no such thing as a "passenger side" driveshaft. The driveshaft connects the center differential with the front differential or the rear differential. You therefore have a front and a rear driveshaft.
Sorry, mistype. Passenger side half-shaft. Did it myself so I know it exists
Pretty sure it’s not the tires. I’ve rotated them-vibration still present and the vibration is not in sync with tire spin. Only time I get vibration is on climbs or moderate acceleration. Coasting-no vibration present.
Starting to revisit transmission as cause. Previous owner went to 115k without trans service. Truck had begun to slightly shudder before I bought it (and has not seemed to get any worse) I’ve dropped and installed new pan which did not correct. Unfortunately I didn’t think (or do enough research) to service the sleeves while in there (ten additional screws and about $30 for the sleeves).
Vibration is coming from front end...so far this is what I’ve replaced. My mind seems to be playing tricks on me. Shudder seems to move from side to side. Sometimes I think it’s coming from drivers side, sometimes from passenger side.
Lower control arm bushings
Front hub assemblies
Passenger side half shaft
Upper ball joints
Differential service (fluid was clear)
Transmission service (fluid was clear and no shavings in pan, debris consistent with 115k on the clock)
Multiple alignments (Firestone has a lifetime alignment so every time I put on new suspension components, it gets one done for free )
I have lower ball joints (awaiting install)
Upper control arm bushings (awaiting install)
I’m going to try some snake oil in the tranny to see if any noticeable difference. Lubegard is what everything points to, and what I have in mind to try. Before you hate on me, I know it’s a bandaid, but at least might help me identify the cause. It’s $12 and lots of documented success in the zf transmission. If it ends up correcting the shudder, I’m gonna go back into the transmission and pull the Mechatronic unit and replace sleeves/gasket. As of now, no fault codes, but may also replace all solenoids while in there for an additional $300.
Love this truck and not ready to give up on her yet. Fingers crossed. If anyone has any other ideas, I’m game! Let me know.