Help! Stuck in Seattle-Rear end gone!

I really appreciate the few of you taking the time to give such detailed info and advice. It is 8 a.m here in Seattle and we are getting ready to walk across the street to the KW dealer from our hotel. We will take your advice and stand our ground. I will update after while. Blessings.
~BridgettAnn

 

Bender, Thank you so much for your insight on this! I think you may be on to something. Marty was wondering from the beginning why two wheel seals would go at the exact same time. Even the service manager here in Seattle said that is "very rare". So, If I understand you correctly, what you are saying is that if we blew an input or output seal, and the dope went everywhere, and they misdiagnosed the problem to begin with, we could easily end up with the problem we now have. Now... They (sioux city) are charging for 6 quarts of dope. Figure a quart to a quart and a half in each side of the axle. That would mean they are claiming to have topped off the diff with approx 3 quarts of oil. Am I correct in this assumption? If this is the case, would we have seen a lot of oil after the so called repair? Or would it be too low? Remember the Seattle service manager said "this has been leaking for a while because there is oil on the rear of the housing." Would that small amount have just been "splashed" in small amounts because of the low level? AND is it possible for the rear end to run "fine" with such little oil after the input or output seal leaked for nearly 3800-4000 miles? Could it take that long to show its face?
Thanks,
~BridgettAnn

 

Update:
Truck was ready this morning. Bill is over $5500. Realized that when we looked over the bill, that they used 46 pints of 75W90 between hubs and filling diff. The bill did not actually specify pints. It just said "46". So we called and they explained it was basically pints. That is 5.75 gallons of oil. Very good. So, I get to thinkin'.... the sioux city KW dealer had "6" on their invoice. We ASSUMED that meant 6 quarts. But since the Seattle dealership used pints, I decided to call service in Sioux City and ask what units they used for oil. The parts guy said that it was also basically units. What I mean by basically, is that each unit is actually in pounds which is about 1 pint. That 6 pints would equal 3 quarts. 1.5 quarts for each wheel seal, and nothing left to fill the diff with! So I talk to the guy in service and he said "no, we don't check the diff oil. The rear end has nothing to do with the wheel seals." I explained to him that the Seattle KW serv. manager said that it is protocol to check and fill the diff after replacing wheel seals. NOW... Remember... they spent 4 hours above and beyond the normal time that it would take to replace a wheel seal. They said that all of that extra time was due to how extensive the oil clean up was. Wouldn't logic dictate that there was more oil to clean up than what could have possibly leaked out of the wheel hubs? Then he back peddled after asking another mechanic that was standing next to him and said that they did check it... and that it must have been full or they would have topped it off. Okay BS.! .. All of that said.. I am going with Benders idea that it was never the wheel seals to begin with. However, since I cannot prove that, we have to go on what we can prove. Which is that at the very least they failed to check and fill the diff. The Seattle KW service manager said that all of the evidence supports this. After talking with some very defensive rude people in service in sioux city, I asked for a corporate number... they gave me the number to the owner of the dealership. I spoke with him and told him of the entire situation and he said "Fax me a copy of the bill from Seattle..I'm leaving the office in about 13 minutes and won't be back until Thursday. I'll get back with you then". So we will be interested to see what they have to say! Might have to go to court if they are not willing to work with us. I think we have proved that this is a no brainer.
~BridgettAnn