Good Morning,
I have a 2006 GMC Envoy XL Denali 5.3
The coils are part number ULTRA-POWER UF414 12573190, 5C1555 ROUND COILS. I'm trying to understand as to how these coils work so well for a matter of one year and fail in a sequence I don't understand. If anyone has any suggestions on some better coils I can throw in and not worry about failure for a least 5 years would be greatly appreciated? I'm trying not to have to buy another clean pretty damn expensive catalytic converter.
I have a 2006 GMC Envoy XL Denali 5.3
The coils are part number ULTRA-POWER UF414 12573190, 5C1555 ROUND COILS. I'm trying to understand as to how these coils work so well for a matter of one year and fail in a sequence I don't understand. If anyone has any suggestions on some better coils I can throw in and not worry about failure for a least 5 years would be greatly appreciated? I'm trying not to have to buy another clean pretty damn expensive catalytic converter.