Question about 2001 GMC Yukon XL
Put in 4 wheel low and it wouldn't go back to 2 wd.
Replaced the transmission swith however it didn't help. Switch now doesn't light up, checked fuse and fuse is OK
Modulator stuck or damaged located at transfer case take a rubber mallet and hit around where modulator and case connect than try to shift again if nothing than un bolt and lube and move actuator rod, with out try to move electronically w/switch back to 2 wheel drive -if moves should work can replace but look for replacement as back up if happens again just change over
Posted on Oct 05, 2009
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Posted on Jan 02, 2017
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