'99 Yukon Accessories

doorman · Feb 13, 2019

Got a '99 Yukon that the accessories only work intermittently. Already replaced ignition switch. Is there a relay I don't know about? They work fine sometimes,
then just quit. Any help or suggestions will be appreciated.

Steve@Advance · Feb 13, 2019

When the ignition switch was replaced, were all the terminals clean and bright?

If one had been hot, the female connector up in the plug will be loose and soon fail.

Otherwise it will be a lose, corroded, hot connection somewhere...

You can go on Auto Zone, register and get access to wiring diagrams for most vehicles. With that you can start tracing the circuit.

But, it will be a matter of catching it in the act, or finding a bad connection.

steve_in_mo · Feb 13, 2019

You might also want to check the condition of your cab grounding wire or wires.

RandyB(MI) · Feb 14, 2019

type the question in your google search...someone has already had same issue and they love to share info

'99 Yukon Accessories

doorman

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Steve@Advance

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steve_in_mo

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RandyB(MI)

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