# 2004 Chevrolet Silverado 1500 - Dash cluster is FUBAR

**URL:** <https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [April 20, 2020, 6:20pm UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136 "2020-04-20T18:20:19Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![franklawlor](https://avatars.discourse-cdn.com/v4/letter/f/6a8cbe/32.png) [@franklawlor](https://community.cartalk.com/u/franklawlor)\
**Post date:** [April 20, 2020, 6:20pm UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136/1 "2020-04-20T18:20:19Z")

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dash cluster is all screwed up with lights flashing & buzzers sounding. My 2004 chev silverado has only 32,000 miles

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [April 20, 2020, 10:40pm UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136/2 "2020-04-20T22:40:20Z")

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You may be looking at a bad BCM.

> **[5 Common Symptoms of a Failing Body Control Module (BCM) - Module Experts](https://moduleexperts.com/5-common-symptoms-failing-body-control-module-bcm/)**
>
> If your BCM malfunctions, you will notice a negative effect on the operation of your vehicle. Watch out for these symptoms.

Tester

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [April 20, 2020, 11:57pm UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136/3 "2020-04-20T23:57:35Z")

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might have a class 2 serial data problem . . .

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**Author:** ![TXdealer](https://avatars.discourse-cdn.com/v4/letter/t/50afbb/32.png) [@TXdealer](https://community.cartalk.com/u/TXdealer)\
**Post date:** [April 21, 2020, 12:55am UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136/4 "2020-04-21T00:55:37Z")

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Are the gauges showing incorrect information? Like low fuel or no oil pressure? Almost all of these trucks needed to have the instrument cluster rebuilt or replaced for erratic gauge operation caused by the stepper motors going bad.

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [April 21, 2020, 6:20pm UTC](https://community.cartalk.com/t/2004-chevrolet-silverado-1500-dash-cluster-is-fubar/163136/5 "2020-04-21T18:20:05Z")

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Another thing that could be causing this problem is high ripple voltage coming from the alternator. To see if that is the case simply disconnect the connector on the back side of the alternator and start the engine. This will disable the alternator output and will make the dash work like it should if the trouble is with the alternator. If it is bad it is due to bad diodes inside it.