I was in a car accident right before Halloween. Left my car at Boulder Bump shop for repairs. They dealt with my insurance and did all necessary repairs. The work they did on body repairs was great. But after getting my car back, the cooling fan was malfunctioning and running at all times. I took my car into the dealership for maintenance and they could not determine the cause of this malfunction. It took the dealership a week; they finally discovered that the two wires for the control module for the fan had been switched. I had told them about the recent body work and they assumed it must have been from that work done by Bump Shop. The dealership contacted the Bump Shop to see if they would pick up the bill. Boulder Bump Shop checked out the work and declined, stating that it was not in their work order, they ""should not"" have been anywhere near that fan, and therefore they were not responsible for payment. My car was not making this noise before the accident or before I brought it into Boulder Bump Shop. It was a very obvious and loud noise. If it had been making this noise, it should have been noted by the Bump Shop and addressed with me prior to repairs. It was not. The noise only became present after the repairs/work was done at the Bump Shop. No one else has had access to my engine other than the dealership and Boulder Bump Shop. The dealership was extremely helpful and did everything they could to help settle the situation. They even cut the original bill from $600 to $250 +tax. I approached Boulder Bump Shop seeking a compromise. I asked if they would cover half of the bill. I had just spent $4000 in repairs at their shop. I was asking for $150 as a measure of good faith. While they ""should not"" have been handling the cooling fan, and it was not in their work order, and I cannot prove that their hands touched my fan, they were the last people to handle my car and mistakes happen. There was extensive repair work to front bumper and side panel, and they certainly would have been in the engine compartment to remove all the pieces. I tried to resolve this issue in a friendly and fair way (splitting costs half/half). The Boulder Bump Shop again declined saying that they were in no way responsible. They supposedly guarantee their work and they were the last people to handle my car. I just spent $4000 for body repair from them and they would not pay $150 to keep a customer or fulfill a guarantee in their work.