TrailBlazer 2002-2009
2023- The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

Misfire nightmare

Old Dec 6, 2017 | 3:04 PM
  #11  
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Ok fair enough. So if it is that then bad PCM?
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Old Dec 6, 2017 | 7:54 PM
  #12  
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From: kevinkpk
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What you have to do is, determine lack of fuel, which you state is the issue. Now, why is it lack of fuel, non pulse to the injector , or no fuel to the injector.
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Old Dec 7, 2017 | 9:25 AM
  #13  
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Well first off thanks for staying on me. Turns out there are three wires to the coil pack. I was getting spark, but no fuel. Voltage was good and when I went to try the pulse test engine was running fine. One of the wires to the coil plug was exposed. I had taped it the night before. I don't know if maybe that wire was preventing a signal to the injector but all is well now. Again thanks.
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