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  1. S

    O2 sensor woes 7.4 B2 S1 and B1 S2

    Hey guys, I am trouble shooting a dead O2 sensor on my 98 7.4l. I swapped the original OE one with a bosch one and it is still showing that it is dead on the live data. I am getting bias voltage on B2S1. I verified that I have low resistance between the ECM connector and the O2 sensor...
  2. S

    Braided ground strap hanging loose?

    Trying to find where this ground strap would go on a 1998 7.4l. It is under the back of the passenger side of the engine. Thanks in advance.
  3. S

    2nd horn location

    I am working on installing the 2nd horn on my 98 c3500 7.4l. The service manual shows 2 mounting locations. One of them looks like it is using the same hardware as the head light, is that correct? Thanks.
  4. S

    Unplugged connector 1998 c3500 454

    Good afternoon, My horn is the last thing I need before I can get my c3500 registered. It doesn't work. I verified that I have 12v constant at the relay and I tried to jump the hot to the other 2 terminals with no horn. I noticed that this connector that is in front of the battery is...
  5. S

    98 7.4l wiring harness bracket that mounts to intake manifold

    Hey guys, I am looking for any solutions to a lack of a bracket that is allowing my wiring harness to burn up on the EGR tube. Just purchased the truck and noticed that it is missing the bracket that mounts to the intake manifold as seen in this picture. Searching high and low for a part...

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