Chevrolet Suburban 1500 Problem Report
Chevrolet Suburban 1500 Service 4WD Message May be Displayed
The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
4WD Service light came on intermittently. 4WD/2WD indicator lights would indicate Neutral or 4WD-L and the engine would bog down until it shifted out of Low. "System Stability Disabled" warning would also come on. Took to a mechanic that want about $570 to instal the new 4WD Transfer Case Postion Sensor. this really seams to be a manufacturing defect, but it past warranty. - elmtulsa
service 4x4 light on - Visitor
On 4 wheel drive indicator panel, light goes from 2WH to Neutral, service 4wheel drive is displayed and Traction Control System is disabled. - Visitor
sometimes when driving my truck will shift into 4wd and when i push the button to put it back into 2wd the light just flashes. i have to restart my truck several times before it will switch back. - Visitor
Service 4 wheel drive message information center and sometimes the switch is disabled with no orange lights and disabling the control. - Visitor
My truck automatically goes from 2wd to 4wd then stays in neutral - Visitor
shifts it self out of 2 wheel drive, lite blinks and will not engage and go into gear. Works later after a few minutes. When in 4 wheel , it will not in engage sometimes and message comes on to service 4 wheel drive. From research it seem that it is the transfer case sensor. It has done one or more of these things in the last 30 days and then run ok - Visitor
I replaced the 4wd transfer switch in 2007 and
now again it is not working, this would be the
second switch I would replace, all GM parts - Visitor
Tranny went out at 128,000 miles, spent $2000.00 (at Aamco) for a rebuilt transmission. Now it will not go into gear unless I put it in 4WD Auto.
Aamco now states;" it needs a new Transfer Case and Encoder motor at $800.00.
It doesn't pass the smell test for me!!!!!
Elston Howard - Visitor
the "service 4WD" notice goes on, the stability system will not work and the lights go off on the selector for 2 or 4WD HI and LOW; the car cannot be used in 4WD and it gets very scary. I has not been fixed. - Visitor
service four wheel drive - Visitor
service 4 wheel drive message p01837 - Visitor
At approx 30000, SER 4WD message, dealer said it was a bad transfer case motor, replaced motor.
At 65000 same problem same solution.
At 105000 same problem, now wondering if outside moisture is causing problem. Dried transfer case motor
out and problem seems to be gone. Recall last times problem occured was raining and damp for prolong time. Another Suburban owner stated he cured problem by sealing around transfer case motor with HD sealer. Might be worth a try. - Fat Jimm
Had the 4wd service come on at 55,000. Boss had an 2003 Tahoe that did the same thing. Both vehicles had sensor replaced. Now it is back on with 88,000 miles. Will try cleaning grounds. - Visitor
I had to take to dealer who replaced sensor and charged me 1800.00 to fix 2 years later the kight is coming on again but it isnt locked in 4wd this time like last time - sam g
I pushed the 4HI position a couple weeks ago and it just blinked at me and would not engage. I...
Service 4wd light is on, selector won't go into 2wd, stuck in 4whi. Replaced selector, motor,...
I've seen the Service 4wd message come up occasionally. The truck won't go into 4wd while the m...
I just used the Suburban to pull a friend out of a mud they had managed to get stuck using 4wd...
While turning sharply, the 4wd engages and almost stops the vehicle. Seems to be fine going st...