GM Repair Problems? Ask GM Repair Expert Now.
Hello and welcome!My name isCustomerand I can assist you with your question.
I have a lot of suggestions and things to try.
However, I would recommend that you diagnose the problem by checking for spark and fuel. Would you like me to elaborate on this?
Or is there a security light on or flashing on the cluster?
Ok, then the problem is not related to the security system.
You will have to pinpoint what the engine is missing.
All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the car to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Injector pulse is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests. A simpler test would be to see if it runs on starting fluid. If it does, then you know you have spark and compression and you simply have a fuel delivery problem.
I am glad I can help!
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Hello! It'sCustomerfrom just answer.
I am just checking in to see if you need any further assistance?
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