Instrument cluster on 2003 gmc enoy

SOURCE: ABS BRAKE LIGHT ON IN MY SUBURBAN/GMC TRUCK

Try diconnecting the battery for a minute or so, then reconnect it. the computer should reset itself, and hopefully the light will go out.

SOURCE: abs and traction control light faults after a brake job. 2005 Pontiac grand prix

You have a bad sensor at one of the tires that need replacing that operates ABS and traction control. If you take it in to a shop it will run $130 but they can find which sensor is causing the problem. But if you do it you might have to replace all 4 sensors to make sure you got the right one. Every hard to diagnoses. Its better for the shop cause they can get electrical read outs for each sensor.

SOURCE: 2001 GMC SIERRA . ABS LIGHT STAYS ON

Wheel speed sensors misadjusted, damaged , or metal shavings and other debree, since they are magnetic can give false readings from one of the wheel circuits. Over sized tires can give of false speed readings as well. there are many other causes including bad relay, control module, e.t.c. It is best to have the proper scan tool to diagnose an ABS problem

SOURCE: 1995 GMC Sierra Z71 ABS light stays on

yo man, idk if this is exactly what your problem is but my 1991 gmc sierra was doing the same fuckin thing and ****, and i took it to the gm dealer and had them look at it and my connectors and my ignition switchs were fried, also my truck was having a problem shitfing once those went but i also had that problem, perhaps yours is somehwta liek that as well... hope i could help

SOURCE: 1998 Plymouth Grand Voyager instrument cluster problem

There has been issues with the solder joints on the PIN connection to the gauge cluster. The issue being that over time thru vibration and such one of these solder joints will fail (happened on or 1999) you can repair this though. You will have to remove all of the trim from around the driver's side dash board, this will include the trim towards the center of the dash. Once these pieces are remove you'll need to remove the gauge panel (I believe (4) allen head screws) carefully bring the panel and release the wire clip from it. Looking at the back of the panel, where the plug was, carefully with plenty of light look for one of the pins to have a failed solder joint. It will be very faint however the failed joint will be a fine dark line around the pin. To correct use a small soldering iron and reheat this solder until it wants to flow, let it cool and reassemble.
As I fore mentioned I had the exact same issue as you are describing, our is a 99. The most tricky part is the dash, take your time with it.
I hope this may have assited you,
Tom