2022 refresh LM2 banks idash questions

PTENEBRU · June 22, 2023

I have a 2022 GMC Sierra AT4 with the 3.0 LM2 and an idash. Does anyone have an issue where the DPF RG % (which I believe is DPF Regen Trigger in the gauge selection menu) is blank. This also impacts the DPFDIS and DPFTIM which I assume is calculated off the same data. When I first start the truck all the above parameters display correctly but in under 60 sec they all go blank (actually display ‘—‘). If I unplug the iDash and plug it back into the OBB port they display again and they disappear. What really strange is that a couple times I did this and they remained on for my entire 60 min trip. This was happening with iDash 1.24 firmware. I called Banks and they sent me firmware version 1.24.7 but nothing changed. For some reason the DPF Soot Level % does display. Does anyone else have this issue?

I did have some other iDash related questions:

1. Are the DPF soot level % and DPF RG % the same parameter? and the only difference is one has a decimal place that never displays to that accuracy? They seem to be the same but it confuses me why one displays constantly and the other displays ‘- -‘ after 60 seconds or so.

2. Is there no parameter for oil pressure? I know there’s a gauge on the trucks dash that only has values for 0 and 120. My oil pressure sits at about 25% on the gauge (~30psi) at idle which I guess is normal from what other posted.

3. Is it normal for the soot level to rise at different rates between regens? For example I drive about 30 miles to work. A regen kicked in about 5 miles in. Probably took 11-12 minutes The regen stopped and the soot level read 16%. Then it displayed 0%. By the time I got to my work it read 26%. I didn’t track the miles after the regen but it couldn’t have been more than 20 miles. Drove another 30 miles home and the soot level read 46%. At this rate the regen would take place at 100-120 miles. However my regens typically happen in the 375-450 mile range. The DPFDIS (distance between regens) currently reads 448 miles. Is the sensor or iDash just that inaccurate or is it some type of scaling issue. I feel like it raises really fast right after a regen and as it get’s closer to 100% it raises slower. Just curious if anyone else experienced this and if this is just normal. The truck is running fine and haven’t had any issues.

redwngr · June 22, 2023

Regen can initiate form miles, soot, fuel burned or hours.

Each one has a maximum, and it seems that the computer calculates a % of maximum for each one.

Most of use daily driving will usually regen because of soot level.

23 with LZO has the same problem with those items changing to 'dashes' a few seconds after start.

I'm using 1.24.7 (beta) build. The dpfdis item seems to be an average def distance rather than 'miles since last regen' that was available on my 21 (pre-refresh) LM2.

There seems to be a bunch of items that were working on the pre-refresh LM2 trucks that are not working post refresh.

Are you using the 'DMAX LM2' vehicle selection that is the 2nd from bottom on list on 1.24.7?