Misfire, no spark on passenger side of engine

Tiny
JESSERIDES
  • MEMBER
  • 2000 CHEVROLET SUBURBAN
  • 0.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 275,500 MILES
No spark on passenger side of engine. Still starts but no fire to four plugs on right side of engine.
Sunday, June 16th, 2019 AT 11:14 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,965 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.
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Tuesday, June 18th, 2019 AT 2:00 PM

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