missing electrical

  1. C

    2004 Tahoe..Missing after using Seafoam

    Hey guys! Sorry if this has been mentioned but I’m new to this. I have a 2004 Tahoe 5.3 Vortec with 270,*** miles. I had a lifter tick and decided to do the Seafoam treatment. I did 1/3 of the bottle through the vacuum line and the rest in the fuel tank. After doing this my truck started...
  2. M

    What the heck?!?! Need help identifying what I'm missing...

    Okay, Just purchased a used 2007 Yukon Denali. Well-documented service records but time for plugs/wires. I swapped them out but found an electrical connection that goes to nothing in the engine bay. Located on the driver's side close to where the firewall meets the fender. Looks like a 6-pin...

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