H3 Keeps switching to 4hi lock on its own

[Hayden]

Hey all,

I know its been a while since ive been on here but im hoping you guys could give me a hand. Im currently at work and my gf is driving the hummer. Shes saying its switching to 4hi on its own and this is the third time its done it so im posting this in hopes that someone will have some insight on what the problem could be so i have an idea of where to start at this weekend

Thanks ahead of time,
Hayden

 

[650Hawk]

Possibly the buttons are stuck/gummed up? Get some QD Electronics Cleaner and spray the heck out of them (remove the button assembly from the dash panel and unplug first).

 

[Happy Hummer]

Beat me to it...lol!
I'd also check to make certain your accuator wiring is not having trouble at the t-case.

 

[Hayden]

Yeah i thought about that but it sounds pretty intermittent from what shes telling me but its definitely worth a shot

 

[08H3]

Props to your girlfriend for noticing. With a lot of people I know, the issue would probably only come to light after a 400 mile interstate trip at 70mph and an exploded transfer case.

 

[Hayden]

Props to your girlfriend for noticing. With a lot of people I know, the issue would probably only come to light after a 400 mile interstate trip at 70mph and an exploded transfer case.

Yeah man exactly! Im definitely appreciative

 

[alrock]

It's also happened when people bump the switch when adjusting the mirror or reaching up there, especially if holding a purse or something.