2003 CHEVY AVALANCHE

  • Tiny
  • lnghair7
  • 2003 Chevrolet Avalanche

Engine Performance problem
2003 Chevy Avalanche V8 Four Wheel Drive Automatic 139, 00 miles

How often do you change the spark plug wires on an Avalanche?

Tuesday, February 23rd, 2010 AT 3:00 AM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,305 posts

I believe the manufacturer says the OEM ones are good for 100K. However, that usually isn't the case. I would recommend aprox every 50K. If you still have the owner's manual, check it for their recommendations too.

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Sunday, July 18th, 2010 AT 11:46 PM

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