Push button 4wd 2005 Sierra SLE Z71

[Cobra_fd]

Has anyone else had this as an issue? Every once and awhile, and for no apparent reason, my truck will shift itself into Auto 4wd. It seems to do it after being shut off/parked, and randomly. I think it may have shifted into 4hi a couple times too, but for some reason I haven't figured out yet. Have no codes, fluids changed at recommended intervals etc.etc... Have no issue when manually shifting between any selection, everything seems to work fine in that regard, it just decides to shift on it's own when nobodies watching. I can usually expect it to have shifted if I have been in and out of 4wd for driving reasons, and always check on start up after using 4wd but it is not everytime either. Some times it is a day or two later. Have checked the switch back for the known wiring/solder noted issues and all is good. Is it just my truck telling me it wants to go 4 wheelin' again or do I have gremlins?

 

 

"mud is not just for pig sties, it was meant for driving in too"