2006 Cummins squeak....Bad u-joints? - Pirate4x4.Com : 4x4 and Off-Road Forum
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Old 03-14-2011, 05:12 PM   #1 (permalink)
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2006 Cummins squeak....Bad u-joints?

My 2006 3500 just developed a squeek, or a high pitched chirp. I have jacked up all 4 corners and spun the the tires, Brakes are fine.

The noise is only under load, and increases with mph, It is not dependant on engine rpm. I just drove it for 5 miles and the u-joints arent even warm to the touch. I have 106,xxx miles on it. Is there a for sure way to find out what u-joint it is or maybe the carrier bearing on the driveline? At $50 per u-joint I dont want to just throw money at it and hope that fixes it.
72' k5 blazer, 350/350/205, HAD shaft 8" lift, zero rates, 3/4ton 4.56s, 38/14.5/16 Toyo M/Ts

2006 Dodge Megacab 3500, 5.9 cummins, 6 speed, straight piped, cold air intake, Juice with attitude, 35's and leveling kit

67' Chevy 1/2 ton 400/400/208, 6" lift, 35" Toyo M/Ts
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Old 03-15-2011, 01:06 AM   #2 (permalink)
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Look for rust around the rubber seal between the u-joint cross and caps.
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