Vehicle specs:
1996 GMC Sierra C3500
350ci Automatic
This is my parents vehicle, but I do currently have it at my location. The fuel pump was replaced 3 months ago with a new unit(not reman), I was told the fuel filter was replaced at the same time. Since then the truck has started fine until the last 2 weeks. There was a coolant leak at the quick connect off the manifold to the heater core. I was adding coolant/water every 3-4 days at the time. I replaced the corroded connector and refilled the system. Which fixed that leak. Shortly after that is when the symptoms started. In the morning the truck will start fine. However, on days where the temperature is elevated restarting is difficult. If I'm parked in the shade all day at work the problem is normally less noticeable where as if I'm parked in the sun starting is much more difficult but it will still start. Yesterday though after being parked in the sun and finally getting it started I drove home and stopped at the grocery store where it would not start even after sitting for nearly 30 minutes. This morning I went to take it to a shop (none of which were open) and she fired right up. I'm thinking either the ignition coil is overheating or the coolant temperature sensor is on it's way out.
1996 GMC Sierra C3500
350ci Automatic
This is my parents vehicle, but I do currently have it at my location. The fuel pump was replaced 3 months ago with a new unit(not reman), I was told the fuel filter was replaced at the same time. Since then the truck has started fine until the last 2 weeks. There was a coolant leak at the quick connect off the manifold to the heater core. I was adding coolant/water every 3-4 days at the time. I replaced the corroded connector and refilled the system. Which fixed that leak. Shortly after that is when the symptoms started. In the morning the truck will start fine. However, on days where the temperature is elevated restarting is difficult. If I'm parked in the shade all day at work the problem is normally less noticeable where as if I'm parked in the sun starting is much more difficult but it will still start. Yesterday though after being parked in the sun and finally getting it started I drove home and stopped at the grocery store where it would not start even after sitting for nearly 30 minutes. This morning I went to take it to a shop (none of which were open) and she fired right up. I'm thinking either the ignition coil is overheating or the coolant temperature sensor is on it's way out.
