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Front Diff

As Jackseric said, talk with the Service Manager. Be polite, don't come in ranting and raving. Have your records with you, although they should have copies of your work done by their shop. Bring in everything that backs up your claim. Even with this, he might at first say no. Be prepared for this and let him know that you'll be talking with his boss, the dealerships General Manager/Owner and then corporate. The Factory has Factory Representatives that handle claims like this. Generally, they're not mechanics, but they'll listen, and as stated will generally try to get satisfaction for a legitimate claim like yours. Good luck.

 

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Front Diff Cover

The dealership shoul;D pay for their mistake. If they messed it up, it's their responsibility to fix it (at their cost.) Again, talk to the Service Manager. Even if they have to drop the rack to get the clearance to fix their screw up, it's their responsibility, not yours. If it was that way from the factory (very doubtful), then Dodge should pay the dealership to make it right. Either way, since you haven't wrenched on it, it's their dollar for the repair.