My '03 truck with just over 100K miles won't start if the temperature is below 40 degrees unless it is plugged into the block heater. Jim Anderson gave me some tips on things to check but all came to dead end. The dealer worked on the truck unsuccessfully for a couple of weeks until finally calling Chrysler to discuss my truck and another that had been towed in with the same symptoms. Chrysler is telling the dealer that the problem is caused by bad injectors and to replace all six at $580 each. Is anyone else having the same problem?