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  1. OEM Issues
    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...
    coils
  2. OEM Issues
    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...
    coils
  3. OEM Issues
    Hey Everyone, I'm new here and have an issue I'd like to get some better insight on. I have a 2004 Envoy, I6 with a continuing misfire P0300 issue. 150,000+ miles. Several weeks ago, the engine started to misfire (blinking check engine light, running terribly). I put in AC Delco plugs about...
    coils ignition misfire p0300
  4. General
    I am getting misfire error codes and sure enough one of my coils is damaged and must be replaced. Question is... Have any of you had bad experiences with 3rd party coils that are not AC Delco? Auto parts is charging me over $120 each coil and online i see some places charging about $160 for ALL...
    coil misfire coil pack coil replacement coils
  5. Suspension
    Looking to get this kit for my 2004 Chevy Trailblazer LT 6cyl. 4.2L This is the link: http://www.summitracing.com/parts/GRF-9953/ Please help I want to order these next week and just wanted to make sure this is all i needed to get and that it would work for my car? I apreciate it. Taylor
    coils lowering noob springs suspension
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