Gauges not working?

Did you check for voltage at the applicable fuses? Even if fuse is good, if no voltage at fuse circuit, circuit is still dead. Some fuses circuits are hot all the time, some go hot with the key on.

The wiring diagram is part of your power windows. Did you check for voltage at ptc? It goes hot with the key on. Did all problems start at the same time? You may have to check your ignition switch or wiring.

Suspect loose pins on the back of the instrument cluster. They can be soldered to the copper circuits to make a better connection.

The Electronic Automatic Transmission Controller (EATX) sends vehicle speed information to the Body Computer which sends it to the instrument cluster which is a whole nuther computer module in itself. The cluster reads that information to calculate road speed for the speedometer. A failure in the EATX can cause just the speedometer and odometer to stop working but not all of the other gauges.

If its all the gauges, this usually indiactes a fault in the body control module, usually a bad connection, could've became corroded from excess moisture and it corroded the connection, it has to come out and the lead of the corroded connection has to be scaped or sanded then put back in so it makes a good contact, .

The only other thing it can possibly be is the connection between the gage bezel and its input in back of it, sometimes bump after bump will pop it right out.

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Have you checked the basics? The fuses and wiring should be tested to ensure the gauges are getting power. Are all lights and gauges inoperative in the cluster?

If the connectors behind the instrument panel are good and tight and all other components related to the panel have been checked then the cluster itself will need replaced to fix this intermittent issue.

Hi and thanks for using 2CarPros. Com.

I just went through three different wiring schematics and the result was the same each time. The only thing these items all have in common is the body control module, (BCM). Grounds are in different locations, so I cannot see how that is an issue.

The BCM consist of many different modules that communicate with many of the vehicle's relays and components. Its primary function is to eliminate wiring in the vehicle.

I would suggest having that component tested at a shop where the proper equipment can be found. It is not a cheap part, so I would not recommend just replacing it.

Let me know what you find.

Joe

The instrument cluster is no longer reliable and simple gauges and lights. It is now a computer module and is very unreliable. Sometimes they develop loose connector pins that can be soldered to the copper printed circuits, but more commonly, it's just the typical failure of delicate circuitry. Newer vehicles are much worse, and they can't figure out why no one wants to buy new cars!

Caradiodoc

Hi:
It sounds like you have a short in the steering column or a bad BCM. It will need tested with the proper test equipment.

Joe