2005 Tahoe..Engine hours on DIC starting from 0

Odd...for some reason (maybe not?) The hour meter in the DIC shows 8 hours. It used to show around 1560 or some other bigger number (supposedly legit). Anyone know what happened here? Is my PCM overwritten?.

Matahoe said:

Odd...for some reason (maybe not?) The hour meter in the DIC shows 8 hours. It used to show around 1560 or some other bigger number (supposedly legit). Anyone know what happened here? Is my PCM overwritten?.

Click to expand...

We have run into them resetting themselves, although I'm not sure that we've seen it this up close. @swathdiver? You remember this?

Matahoe said:

Odd...for some reason (maybe not?) The hour meter in the DIC shows 8 hours. It used to show around 1560 or some other bigger number (supposedly legit). Anyone know what happened here? Is my PCM overwritten?.

Click to expand...

HiHoeSilver said:

We have run into them resetting themselves, although I'm not sure that we've seen it this up close. @swathdiver? You remember this?

Click to expand...

Mine reset when my daughter ran down the battery. It was the only thing lost, radio presets and other settings were fine if memory serves. Did you disconnect any battery cables or grounds within the last eight engine hours? Maybe a hiccup over a bump in the road? My memory is not, think it is treated like the odometer if you wanted to reflash the cluster or wherever the information is stored on the 800s.

This data is stored in the clusters eprom, not PCM.

alaska_guy said:

This data is stored in the clusters eprom, not PCM.

Click to expand...

Possibly related to bad pcb components (I.e.capacitor or failed diode)