Whole instrument cluster is completely dead.

The cluster is the array of gauges, warning lights, speedometer, and tachometer that is fitted into the dash. The whole array is called a clluster because it can be removed from the dash as a single assembly.

Hi, this is a pretty common problem on these Silverado instrument clusters. We can repair it for you or provide you with the parts to do it yourself. Click here to learn more about these Silverado instrument cluster problems: Dr Speedometer Instrument Cluster Repair Speedometer Repair Guage...

You need to have your insturment cluster repaired !
How to repair GM Instrument Cluster Speedometer Gauge Stepper
Beside stepper motor problems the solder used on these clusters have a problem called silver migration . Can cause all kind of problems ! What this video from eric at south main auto .
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this is a common issue. the internals of the instrument panel clusters become defective, and is a sealed unit - the entire cluster must be replaced. this must be performed at the dealer because they need to reprogram the mileage into the new cluster with the GM scantool. you should call your local dealer with your VIN#, some models are covered by a secret / extended / goodwill warranty. if the dealer says no, request the 1800 number to contact gm. good luck!

Is the cluster completely dead or is it a problem with the gauges only? If the entire cluster is dead it could be a cracked circuit board.Another posibility is a bad ground. This is known to occur in the 99-02 Silverado clusters and the 03-06's but not as many.

Here you go. Under hood fuse block
Ign. Fuse E
and
ipc/dic
both fuses are 10 amp
I hope this helps. Take care.

Could be lose connection on the back of the instrument cluster ,which means you would need to pull it out of the vehicle . Check pin fit to instrument cluster . for the B+ voltage suppy an ground connection's .
You said autozone - Tried to have auto zone diagnose from inside the car, came up with no codes. That's in the PCM - engine computer . There scan tool will not communicate with the instrument cluster ,which is also a computer in it's self. Need a factory scan tool to check instrument cluster.
Speedometer and/or Odometer Inaccurate
Step
Action
Value(s)
Yes
No
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.
1
Did you perform the Instrument Cluster System Check?
--
Go to Step 2
Go to Instrument Cluster System Check
2
Turn the ignition switch to the ON position.
With the scan tool select Instrument Panel Cluster, Special Functions, Instrument Panel Cluster (IPC) gauges.
Perform the Speed Gauge Sweep Test.
Does the speedometer complete a full sweep when commanded?
--
Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls
Go to Step 3
3
Replace the instrument cluster. Refer to Instrument Cluster Replacement .
Did you complete the repair?
--
Go to Instrument Cluster System Check
--
With a scan tool select the instrument panel cluster, data display, gear status.
Monitor the gear range status.
Move the gear lever through each gear.
Does the scan tool display the correct gear selected?
Your best bet , take it to a qualified repair shop .

yes as long same trim.

if nothing on the guage cluster is working, chances are you lost power to the whole cluster. try checking your fuses. betcha one of em is blown.

The light behind myRemove the cluster bezel from the instrument panel. See Cluster Bezel in this group for the procedures.
Remove the four screws that secure the instrument cluster to the instrument panel Instrument Cluster Remove/Install
Pull the instrument cluster rearward to disengage the two self-docking wire harness connectors
NOTE: The instrument cluster has two self-docking wire harness connectors that will be automatically aligned with, and connected to the instrument panel wire harness when the cluster is installed in the instrument panel.
Remove the instrument cluster from the vehicle.
Reverse the removal procedures to install. Tighten the mounting screws to 2.2 N·m (20 in. lbs.)
when I turn my headlights on. All the other gauges are lit, but not the gas gauge. How do I get in there to replace the bulb and fix this? Or is it a fuse problem? I have a 1998 jeep scout Thanks