Went over a huge bump and the entire dash lit up and stayed that way until I got home. After that, the truck wouldn’t start again. It cranks but doesn’t start.
I can, however, get it started by commanding it on with a scan tool.
So far, I’ve replaced:
-Igniton switch
-ECM
-Fuel Pump
-Spark Plugs
-Fuel Pump Control Module
-Battery
No further codes or errors are showing with one exception: impact sensors. (Which are cracked in half) I’m not sure if for some reason that may be part of the issue but I doubt it.
I’m hoping for some advice as I’ve really run out of ideas from here. Thanks in advance!
Maybe if the computer senses a severe impact (e.g. from the impact sensor) it automatically turns off the fuel pump. To minimize the chance of a fire after a crash.
A cranks ok but won’t start condition is usually either no-spark, or no-fuel. Are you getting a visible spark at a spark plug during cranking? Is the fuel pump running?
Why would you replace all those unrelated parts before finding out WHY your car won’t start? I don’t know my way around Corvettes and never had or worked on a car with Impact sensors, but If I had your situation, I would have made the choice of 3 options. Replace the impact sensors or find out what the consequences of cract impact sensors are or take the car to a mechanic that knows.
Your car is trying to tell you something, why aren’t you listening?
Why did you not determine if you have fuel or spark before replacing parts?
Re-reading the posts, I have no Idea where I got that from. All I can say is all Chevies are much alike4 to me. I owned one and I will never own another. There was one that made me smile though. I was visiting some relatives in East LA 30myears ago when I saw a l;owered mid 70s Chevy. Lettering in the back window said TCHEBBIE! TSHARP1
I suggest you verify that the plugs are firing when you crank the engine. If that is good then try spaying a little starter fluid into the intake and see if that makes the engine fire up. The results of those tests should tell you what needs to be looked at.