The question is: Should I let these guys go ahead and do this maintenance on my truck? Here is the estimate from the dealers service department. I do not trust these guys, I had my own mechanic look at the truck and he found metal in the front diff case, these guys opened it didn't find any more metal, did not inspect the bearings and they put it back together and tried to charge me 275$ and did not fix a :thumbdwn: thing. I told them to test drive it and they turned and said yes they hear the growling noise. Now they are estimating all this work. Now there is still no garantee that this will fix the growling noise. They mentioned that if it is gears it will cost more. This is after I got Ford customer service involved and got the Service manager to wipe out the cost for the first worthless "inspection". 2002 ford explorer 4X4 XLT :exp: remove front differential case 5.3hr 527.35 replace carrier bearings .4 39.80 replace pinion bearings/cups .7 69.65 check run-out .5 49.75 replace housing axle bearings 1.0 99.50 press fit bearings 50.00 pinion seal 20.09 ft/rr pinion bearings/cups 89.86 carrier bearings/cups 75.20 axle bearings 76.74 silicone sealer 27.23 gear oil 68.61 modifier 6.02 axle seals 39.37 sales tax 33.26 total $1272.43 Please need opinions on this ASAP. Thank You!