replaced fuel pump tries to start will not stay on
Chevrolet Q&AAsk Your Question
2004 Chevrolet Trailblazer Question: no start
Answer #1goodguy September 02, 2013, 15:32Master
scan test for codes and check fuel pressure
Answer #2Dleib September 02, 2013, 16:06Enthusiast
I would first check to see if you have spark. Then check to see if you have fuel. If you have spark and fuel check your timing. It helps to narrow down the problem.
Answer #3pushrod September 02, 2013, 18:46Master
Can you hear the pump run for a couple of seconds when key is turned on? Listen at the filler neck with cap removed while someone turns key on. Pump should run for a little bit then cut off. If key is cycled to start then let off, pump should repete this each time! If no pump operation, check ALL fuses and pump relay! Finally, is the security light flashing while cranking?
Replygfitrim, September 02, 2013, 21:03Rookie
What is the security light and were do I look