2007 Chevy Tahoe 4 wheel drive

2007 CHEVROLET TAHOE
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REVMAN54
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Drive Train Axles Bearings problem
2007 Chevy Tahoe V8 Four Wheel Drive 57000 miles

got in this a.m. put vehicle in reverse and warning message "service 4 wheel drive system" came on and felt like I had the brakes on. tried to reset the drive mode (had it on auto) but would not reset. tiny lights were on on the dial for 4 wheel drive and auto. could not get out of my driveway in reverse. Is this a sensor problem or something else. Have only used 4 wheel drive once and never went over 30 mph. had no problem driving home last night but had this happen this morning.
Jan 12, 2010 at 1:09 PM
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SERVICE WRITER
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There are codes that are stored in the computer. Those need to be accessed first to know what it wants.

IF no codes are present, you need a computer flash.
Go here and enter your vin and check for calibration updates:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Have seen a fair share of encoder motors and the switch on the dash on these go bad, but would not jump to these conclusions.
Jan 12, 2010 at 1:56 PM
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