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Used a listening device and a vibration locator while driving the truck. The tech said the failure was easy to spot once the truck was on a lift.

Diagnosis took 2 hours. Waiting on parts was 1.5 weeks. Repair was completed in one day.

I have one here in North Texas that will get you lined out.

Check the front differential pinion bearing. I had all the same issues in this thread and the issue was resolved when the front differential was rebuilt. 23 EB truck with 10k miles

Yes this was covered under warranty. The repair took half a day. The wait for parts was 2 weeks.

I had the same issue. Zoom in on the pinion gear.

T Not this issue specifically but the front differential pinion failure truck is mine. It didn’t grenade but failed with 14k miles. The issue started way before 14k. Truck is a EB 23 model.

Got the truck back today. The vibration is gone.

This vibration used to be a slight vibration. It was this way for several thousand miles but recently has gotten worse. When the truck is cold the vibration will rattle dash trim pieces, this level of intensity is new. I think the oil leak is a newer issue. Early on with this issue 4A would...

I have this same vibration issue in my 23 truck. It has been diagnosed at a front pinion bearing failure requiring a full rebuild of the front differential. I also have what I consider excessive play in the front driveshaft at the transfer case and the input seal on the transfer case is leaking.

The pinion seal is not leaking much. The seal on the transfer case is.

Should have added it’s under warranty. Truck has 14k miles on it.

It’s nice to have a dealership with knowledgeable techs. The first dealer I worked with was a joke. Just found out what the source of the vibration is. The pinion bearing on the front differential has failed. Not sure of the cause of the failure but that’s the source. A full rebuild is needed...

The springs have been on the truck for almost 11k miles. Installation was done at a reputable off road shop here in DFW. Alignment was done at the dealer after the installation. Really don’t think the springs have anything to do with the issue.

The tires have been moved around. All the tires have been road force balanced. The spare was even swapped for a suspect problem tire. Rear springs are now factory springs. The vibration is still present. As the vehicle speed increases the vibration increases in frequency but does not increase...

The dealer was just trying to blame the rear springs on the vibration. I swapped the factory springs back onto the truck and the issue is still present. My instinct says the driveshaft is out of balance.

Is this a known issue with Geiser springs? Honestly I don’t think the springs are the issue. I have many years of building and troubleshooting modified trucks. I feel this is the easy way out for this particular dealer.

I know a 7 degree increase is high. I find it odd that a Geiser spring changes the angle that much. I haven’t noticed the vibration getting worse with flex.

For those that have aftermarket spring installed, have you noticed vibrations that start around 58mph? I have Geiser springs installed front and rear and have a weird vibration. The truck has been at the dealer for a week and today I was informed of the following… “Yes they found some things -...

$475 for front install and alignment at TMX.

I have this vibration in a EB truck. Vibration starts around 60 mph. The vibration seems to reduce when I put the truck into 4A.

The bed cover is a Retrax Pro XR model. The rack is a tray setup from Frontrunner. The legs are tall version and yes they fit into the T-slots. Short legs are also available. https://www.frontrunneroutfitters.com/en/us/ford-f150-retrax-xr-5-6-load-bed-slimline-ii-krff029t.html

Yes this is the Condor XL.

Adventure mode.