Oil-soaked spark plug wire rubber boots can cause misfire or rough idle on GMC Sonoma

The spark plug wire rubber boots may get soaked with oil, causing a misfire or rough idle.

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Average mileage: 118,000 (118,000–118,000)
Engine affected: 2.5L 4 Cylinder
4 model years affected: 1991, 1992, 1993, 1999
4 people reported this problem
0 people shared problem details
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