I hit a deer in April of this year and had a local repair shop fix my truck. They did an excellent job on the body of the truck, but as far as the mechanical part of the truck they were below par for knowing what they were doing. The first thing I noticed was the fact that the blower selector was not working, it was only blowing on the sublevel never on the floor or the deforst. I took it back several times and they insisted that could not be caused by the accident. The other issue I noted was the brakes were squealing like the wear indicator was rubbing against the rotor. Only last but not the least issue was at the beginnig of December when my son in law was using my truck while I was in Chicago. He told me my truck would not go into 4 wheel drive. That is when I found this forum to look for any issues that I could look for. For the most part everyone was pointing the blame on the vaccum accutator vavle under the battery along with the dealership. Well come to find out there is a vaccum reservoir on the left side of the truck on the fender, it has one small nipple that would be located in the upper right side of that reservoir and the vaccum line was disconnected. The rough idle on the truck disappeared and the selctor switch is working and my favorite part is my 4x4 is now working. CHECK ALL OF YOUR VACCUM LINES!!!! It saved me a lot of money finding that one little hose, and never let a body shop tell you that can not happen in an accident. I still have to rpl the wheel bearing on the left side because of a howl while driving over 40 mph.

Ed Bismarck ND

By the way I got a diagram of the vaccum lines from the dealership parts department.