Gauge cluster diagram

1999 GMC YUKON
70,000 MILES
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JOE DENALI
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I’m looking for a diagram all of the colors on the plug that goes into the cluster the color wiring with the names of the colors and what the colors do.
Oct 16, 2019 at 9:31 AM
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ASEMASTER6371
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Good afternoon,

I attached the connector with a pin out and function of each wire.

Roy
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Oct 16, 2019 at 1:59 PM
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JOE DENALI
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Thanks Roy. I’m hooking up aftermarket gauges from auto meter and in going to use the speedometer wire off the factory cluster and also the fuel wire.
Oct 16, 2019 at 3:11 PM
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ASEMASTER6371
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The speedometer may not work. That changes a signal inside the cluster to show mileage.

Roy
Oct 16, 2019 at 3:17 PM
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JOE DENALI
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Okay, but will the fuel work and how can I get the speedometer to work?
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Oct 16, 2019 at 3:24 PM
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ASEMASTER6371
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Not sure with an aftermarket unit. I would have to see the unit and how it needs to be wired.

The signal from the transmission is sent to the PCM and then off to the speedometer head but it is not a voltage. It is serial data.

Roy
Oct 16, 2019 at 3:33 PM
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JOE DENALI
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Fuel gauge and speedometer.
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Oct 16, 2019 at 4:16 PM
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ASEMASTER6371
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You can try the last one on the speedometer and see if it works.

Roy
Oct 16, 2019 at 4:21 PM
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JOE DENALI
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Thanks for all the help. I will keep in touch.
Oct 16, 2019 at 4:26 PM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
Oct 16, 2019 at 5:44 PM