Misfire, no spark on passenger side of engine

2000 CHEVROLET SUBURBAN
275,500 MILES • 0.6L • V8 • 4WD • AUTOMATIC
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JESSERIDES
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  • 1 POST
No spark on passenger side of engine. still starts but no fire to four plugs on right side of engine.
Jun 16, 2019 at 11:14 AM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Hello,

There are many fuses and grounds (see diagrams below) that need to be checked before we can call the PCM being bad. Here is a guide to help check for power at the fuses and to check the PCM grounds using the engine wiring diagrams below:

https://www.2carpros.com/articles/how-to-check-wiring


Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Jun 18, 2019 at 2:00 PM