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After it rains it will not start?

Tiny
VETTE454
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I have a 03 silverado and after it rains it will not start after it sets for a day or two it will fire right up it runs fine after it starts but I cant seem to figure it out
Sunday, June 29th, 2008 AT 10:56 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,
This is somewhat of a common issue with any of these 6cyl GM engines.
It is usually caused by moisture in the distributor or the coil pack.
During high humidity or rain moisture goes into the distributor cap or in to the coil pack due to poor seal.
You should able to clean out the distributor and replace the cap with new O-ring.
Typically the coil have to be replaced.
Be sure to inspect the ignition control module as well.

https://www.2carpros.com/articles
https://www.youtube.com/c/2carpros/featured

I have attached the diagrams for your reference.

Please let me know of any questions.

Thank you.
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Sunday, August 8th, 2021 AT 5:31 PM

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