Transfer case switch buttons sticking/not popping back
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Member
Joined: Mar 2021
Posts: 59
Transfer case switch buttons sticking/not popping back
Hi guys!
I searched the forums but couldnt get a clear answer.
So my transfer case switch buttons (4wd, 4hi locked, 4hi unlocked and traction control) stick sometimes and other times they work fine. Especially the traction control button, it sticks and doesnt pop back out and then suddenly at other times it's perfectly fine. Time of the day changes nothing, it works a mind of its own haha.
Should I pull it out and dismantle it and clean the circuit board with electrical contact cleaner? I'm a bit scared to do that, or should I just try to spray it from the gaps?
I searched the forums but couldnt get a clear answer.
So my transfer case switch buttons (4wd, 4hi locked, 4hi unlocked and traction control) stick sometimes and other times they work fine. Especially the traction control button, it sticks and doesnt pop back out and then suddenly at other times it's perfectly fine. Time of the day changes nothing, it works a mind of its own haha.
Should I pull it out and dismantle it and clean the circuit board with electrical contact cleaner? I'm a bit scared to do that, or should I just try to spray it from the gaps?
Thread Starter
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Member
Joined: Mar 2021
Posts: 59
that's the first thing I did but it didnt help. At times it's perfectly fine and works as it should, but at other times it's just messed up
Senior Member
Joined: Jul 2012
Posts: 9,017
From: C-Town
Or liquid air freshener?
#PIP4161
Subject: Service 4WD Light On and The System Inoperative, Switch Contamination Models: 2006-2008 Hummer H3
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
In particular, liquid air fresheners that clip onto the HVAC vents can spill onto the IP components. Air fresheners will chemically blister the paint on the 4WD switch and cause the buttons to stick. A B2725 or B0790 switch DTC may be set. The switch may also smell like perfume. Additional paint blistering may occur on the radio.
The affected components will have to be replaced. However, contamination of this nature does not constitute a defect in materials or workmanship for which General Motors would be responsible. Each suspect vehicle should be carefully inspected and a decision made at the local level regarding GM participation with the repair expenses.
Subject: Service 4WD Light On and The System Inoperative, Switch Contamination Models: 2006-2008 Hummer H3
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment about a Service 4WD Light on and transfer case or rear differential lock system inoperative. Technicians may find various switch DTCs or open fuses and the transfer case select switch contaminatedRecommendation/Instructions:
A number of 4WD switches have been received through the Warranty Parts Center that show obvious signs of contamination caused by liquids being spilled through the HVAC vents. On an H3 vehicle these liquids will run in behind the IP face plate and leak into the 4WD switch, the radio and if severe enough may also cause various fuses to become open.In particular, liquid air fresheners that clip onto the HVAC vents can spill onto the IP components. Air fresheners will chemically blister the paint on the 4WD switch and cause the buttons to stick. A B2725 or B0790 switch DTC may be set. The switch may also smell like perfume. Additional paint blistering may occur on the radio.
The affected components will have to be replaced. However, contamination of this nature does not constitute a defect in materials or workmanship for which General Motors would be responsible. Each suspect vehicle should be carefully inspected and a decision made at the local level regarding GM participation with the repair expenses.
Senior Member
Joined: Oct 2011
Posts: 1,656
From: Wisconsin
Yes, agreed dine in or carry out only lol! I do not allow anyone to eat full meals in my H. No going to Culver's and slob n down a full course meal. People can't be trusted to keep food in there mouth and not all over the truck.
Thread Starter
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Member
Joined: Mar 2021
Posts: 59
Hahaha, exactly. I'm clumsy myself so I don't even think about food in the car. Guess I'll just pull the switches if it gets any worse.
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