Hour Meter reset

[CoyleJR]

In 2009 I removed both of the batteries in my 2006 LBZ and the hour meter reset from 3,900 hours to 0 hours. Last night WHILE I WAS DRIVING the hour meter reset from 1,700 hours to 0 hours again for no apparent reason. Does anyone have any idea what could have caused it to reset. I like to keep both mileage and hour meter maintenance records.

John

[rapidoxidationman]

Poor design, in my opinion. My '03 did the same thing. So does my '05. Seems to be on the basis of whenever the computer feels like it.

[Mark Rinker]

My 2009, too at 1500 hours. Stupid.

[More Power]

Just based on how often this happens I conclude that "hours" isn't considered to be important by GM. The odometer reading, though, is sacrosanct, requiring a GM only programmer to reset or alter the accumulated mileage (due to fed/st laws). The instrument cluster can be removed from a vehicle and stored long-term without losing the odometer reading.

I learned this when I bought a salvage cluster for our Duramax conversion project truck. This cluster had sat for a year or two before I got it, yet it showed 1931 miles on the odometer when first powered up. I talked to our local GMC tech about resetting the odometer once the truck was on the road, but the process was onerous and required tedious paperwork to change it. I decided not to...

[AKMark]

My hour meter is reads 12,521 hours on my 05....I know it's had a few battery changes and the meter is not resetting.

[EdHale]

Mine reset itself when it had about 2,000 hours on it. There was not a battery change involved at the time.