Hello my name is Dave.
The best place to start is to insure you did get the wires back in the proper order. I have attached a illustration showing the firing order for your truck. If you find that you did switch a wire or 2 and you can get it started but still have cold start problems then the most likely problem will be a run lean condition since the colder the temp outside the more fuel is needed for the engine to run. There are a few possibilities that could cause this but I would start with the fuel filter if it hasn't been replaced recently, the other thing I would check would be the coolant sensor since if it is not reading correctly and is telling the computer that the temperature is higher than it actually is. Let us know what you find with the firing order and the fuel filter and also if you have a check engine light on, if it is on here is a link to our tutorial on how to retrieve the trouble codes:
If it is the coolant temperature sensor it will usually have a trouble code for coolant sensor. Please keep us up to date on your progress and thank you for using 2CarPros!
Tuesday, December 10th, 2019 AT 5:05 AM