There is a TSB on this (#15219) and if memory serves me right when I inquired about my truck doing this, was told that it was just a normal self diagnostic check of the gauges and not to worry. It hasn't happened since I replaced the instrument cluster because of intermittent display problems so personally I'm not sure if the two are related or not. Try doing a site search ( right hand side of screen) on this topic as it has been mention before and maybe some one has more info on this. Hope this helps.
BTW Welcome to FTE.
"Enemy of the Government of Canada"
Actually, it's a sign that the PCM is not receiving enough voltage from the truck's battery to retain it's settings after the truck has been turned off for awhile. 99% of the time, a weak battery is the cause.
1999 Expy XLT 4x4 4.6
October 7, 1998 - April 26, 2006
Served me well.
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