Cold starting problem

Here's some FYI on your situation. When you turn the switch on, all sensors are activated. One sensor is the cold start switch/temperature sending unit. When working properly, the sensor will send a pulse to the computer telling it to put the engine into cold start mode. Once this is done, a bit more fuel is added to the normal amount to the cylinders and the throttle is advanced slightly making the engine idle a bit faster for the extra fuel coming in. The engine is running to warm-up and the sensor then tells the computer to set the engine back to normal run mode. Once the engine is warm, the sensor is not being used for cold start mode. It will start right up and run smoothly. Now, since your truck is hard to start when cold, first thing you should check is the temperature sending unit wire connection first. if that connection is good, replace the temperature sending unit/sensor, and you'll be good to go. That's a simple repair that must be done when it gets hard to start when cold.

The thing to do is have the vehicle hooked up to diagnostic scan tool . Viewing engine sensor data ,see whats off . The computer may think the vehicle is warmer then it is an giving it less fuel . Checking coolant temp sensor data , IAT - intake air temp sensor . 048 Engine Hard to Start or No Start Scan Data for Starting Problems

Its the solonoid starter issue, you will have to change that started. It is a cold start problem. Not sure about chevy price but normal is comes $50-$80 on top.


Custom Car Parts

this could be a bad fuel pump that has a problem from sitting over night or when it cools down enough.the armature in the pump may be worn and when its cold it has a hard time turning the pump because of it being worn and when it gets warmed up enough the clearance is closer than when cold and works fine.

A good tune-up could probley fix this problem.:Spark plugs,plug wires.Injecter cleaned.

Symptoms are indicative of a partially broken wire somewhere, the cold increases the resistance in the wires and if they aren't working at 100% to start with, will cause your problem. I think you are on the right track, I would replace any high tension parts not already new then start looking for wires showing a high resistance. Check and clean ( with contact cleaner aerosol ) any and all electrical plugs in your ignition system. I would try drying out your computer and packing around it with silica gel to keep it dry.
Good luck

check your anti freeze and get a diehard battery

well if you security light is on, then you have to put your key in the on position for exactly 10 mins and wait until the light blinks and then turns of and then you turn the key off and they you can start it. i have a 2002 alero and it works for my car.

It sounds like the hydraulic lifters are bleeding down after sitting for a while... there are ball checks which are supposed to prevent this... Try using a good engine flush (a product that frees sticky lifters) and replace the oil with a good synthetic... Hope this helps...;-)

go to an auto parts store and get an electcic dipstick heater . remove your oil dipstick after parking car for the night.install electric dipstick preferrably while engine is still hot plug it in at night .this will
help keep the oil warm and also the block after car starts unplug heater remove it and install original dipstick. this is the easiest to install but there are also block heaters