2011 GMC Sierra 3500HD Instrument panel PRNDM Readout

[dsr611]

Truck is a 2011 GMC Sierra 3500HD with the Duramax/Allison combo

Over the past few days, I've noticed that on the instrument panel readout where it shows PRNDM, there is a 1 at the end of the readout.  I know that if the transmission in the in the manual mode (M), it will have a number showing what gear the truck is in, but that # is right next to the M (M1, M2, M3, etc).  If I shift to M, I can us the +/- button on the shift lever to scroll through the gears 1-6. What I'm seeing is a few spaces between the M and the 1 even if the transmission is in M...what I'm seeing looks like this---

PRNDM    1

Put shift lever in M and I'm seeing this---

PRNDM1   1 or PRNDM2   1, etc

 

It may have always been this way and I just never paid attention to it. 

Anyone else see this same thing?  I'll post a pic tomorrow (I'm at work tonight and truck is in the parking lot) in case I'm not explaining what the readout is showing correctly.

Edited January 27, 2021 by dsr611

[newdude]

Yep always like that on the HD trucks.  

[dsr611]

6 hours ago, newdude said:

Yep always like that on the HD trucks.  

Gotcha...I guess I've never really paid it much attention until earlier this week.  When shifting from reverse to drive, I accidentally put it in Manual.  I bumped it back to drive and looked and that's when I noticed it.