Bcm Problems? Dash Going Insane

[BPT_C20]

The problem. (2001 Suburban dash haywire)

1. All gauges but oil and volt meter cut out in at random sometimes affected by road bumps.

2. 3-4 days later all gauges are dead including the PNRD21 indicator, the gauges still light up but they all sit at 0 not the off resting spot but 0. (occasionally the dash will wake up but this is becoming rare)

3. after 5 days now the 4X4 selector switch is completely lit up every light and it will not engage the transfer case.

4. The HVAC is also trying to say on after the key is off now too.

 

I think this is the BCM or the connection to it and or the ignition switch.

(I have read that the BCM is right under the searing column is this correct)

 

Has anyone had a similar problem?

Am I looking in the correct place for the problem?

[98 Z71 SLT]

Ignition switch inside steering column.

 

The ignition switch is the main power-source for all the items you listed...