Mechanics

CHEVY

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?
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Lnghair7
February 23, 2010.




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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