Forum Discussion
Grit_dog
Jan 26, 2023Navigator
Back to drivetrain squeaks. Our 86 GMC K20 has a little speed dependent squeak aft of the transfer case. 1 piece driveshaft.
This is one that would stump most and I’m not totally sure what it is even.
Not outer axle bearings, not brakes/drums and I pulled the driveshaft and both u joints feel perfect.
And it only does it when the truck is in motion. In gear with rear wheels in the air, no squeak.
Best I can figure is one of the u joint cups that I can’t pull without popping the u joint out is just beginning to dry out. Just enough to make noise but probably won’t be evident wear for quite a few more miles.
This is one that would stump most and I’m not totally sure what it is even.
Not outer axle bearings, not brakes/drums and I pulled the driveshaft and both u joints feel perfect.
And it only does it when the truck is in motion. In gear with rear wheels in the air, no squeak.
Best I can figure is one of the u joint cups that I can’t pull without popping the u joint out is just beginning to dry out. Just enough to make noise but probably won’t be evident wear for quite a few more miles.
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