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Here's why. I took my vehicle to Phoenix Rack & Axle on March 13th to have both drive shafts rebuilt. My vehicle spent the day there and I picked it up before the close of business that same day. They charged me $490 to completely rebuild my front and rear drive shafts. I drove about 500 miles and I noticed a vibration. I took it back to Phoenix Rack & Axle to have it checked out and after having it another full business day they said the drive shafts were "perfect". But there was still a vibration. So today I had my drive shafts checked at a reputable driveline place. What they discovered is Phoenix Rack & Axle probably replaced one u-joint of three on the front driveshaft but did not replace any of the u-joints on the rear driveshaft as the 5 u-joints were from the original manufacturer of the driveshaft, something ONLY that manufacturer uses. So if the driveshaft was fully rebuilt, how could there still be 5 original u-joints in place when I paid to have the driveshaft completely rebuilt and was told they were? If I had continued to drive my vehicle the way it was the front driveshaft would have blown apart within the next 50 miles. But Phoenix Rack & Axle told me it was "perfect".
So I went back to Phoenix Rack & Axle this afternoon and explained what had been discovered. The manager said I should have brought the vehicle back to them as I had a warranty. I said I did, in April, I brought it back and repeated what he had told me in April back to him, that they determined the drive shafts were "perfect".
So their definition of "perfect" seems to be replacing 1 u-joint out of 6 and a quick spray paint job.
Based on my experience, I recommend you DO NOT DO BUSINESS WITH Phoenix Rack & Axle.