My ABS light came on then about a week or so later my service 4 wheel drive light came on. I checked fuses and their fine. I have no problems with my brakes either. I have not used my 4 wheel drive since the 2011/2012 winter season. Now it's winter again and I need to know if they are related and how to fix them.
ABS on ? DTC'S - diagnostic trouble code's are probably stored in the ABS control module . 4X4 an ABS are not related . To fix , take it to a qualified repair shop.
SERVICE 4WD: Refer to Transfer Case Circuit Description in
Transfer Case Shift Control Module
The transfer case shift control module uses the VIN information for calculations that are required for the different calibrations used based on axle ratio, transmission, tire size, and engine. The system does not know which calibration to use without this information. The transfer case shift control module monitors the speed of the front and rear propshafts in order to detect wheel slippage. When wheel slippage is detected, the module applies a clutch pack contained in side the transfer case. This clutch pack is used to lock-in and apply the front propshaft, transferring torque to the front wheels. The clutch pack is applied by a motor/encoder assembly. When slip is no longer detected by the transfer case shift control module, the clutch is no longer applied.
These are all code's for 4X4 Do you know what a DTC is ? diagnostic trouble code
DTC B0770
DTC B0775
DTC B0780
DTC B0785
DTC B0790
DTC B2725
DTC C0300
DTC C0305
DTC C0306
DTC C0321
DTC C0327
DTC C0359
DTC C0374
DTC C0379
DTC C0550
ABS DTC'S
DTC C0221-C0227 or C021
DTC C0229 or C029
DTC C0235-C0237, C035-C037, or P1504
DTC C0238 or C038
DTC C0241-C0254 or C041-C054
DTC C0265 or C0266 and C065 or C066
DTC C0267 or C0268 and C067 or C068
DTC C0269 or C0274 and C069 or C074
DTC C0271-C0273, C0284
DTC C0279
DTC C0281 or C081
DTC C0283 (w/NW7)
DTC C0287, P1644, or P1689
DTC C0290 or C0292
DTC C0291
DTC C0297
DTC C0298 or P1571
SOURCE: 1989 sierra no brake lights
The wiring foe the ignition switch and the actual switch is mounted on the lower end of the steering column inside. It's connected to the key switch bt a rod. Check your turn sugnal flasher. it is sererate from your four ways. First
SOURCE: gmc yukon has the abs & parking brake light
you have to fix the problem with ur brakes- first check the wiring ,connectors and connection clips to the abs sensors and modulator if looks ok than have truck scanned some auto stores such as auto zone / advanced auto do it for free the code will give u a start point towards fixing ur problem--visual inspection of brakes doesnt always show problem
SOURCE: My 2002 Envoy will not shift into 4 wheel drive or
check the transfer case selector motor, they go bad and thats what happens, no 4wd and no other lights on switch because its not doing any changing of the tranfer case, to test remove motor ground it and with connector connected, try to switch to 4wd see if motor moves, you can use a test light to make sure its getting power, hope this helps.
SOURCE: brake lights won't work. tail lights do. I
need to know if your third brake light up high is working or not.if it isn't,you need to check the brake light switch on the brake pedal with a test light,one side hot all the time,the other side should turn hot when brake pedal is pushed.
http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html
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4 wheel drive system will not disengage?
http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html
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4WD light is flashing and beeping? NO 4WD
high?
http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html
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2002 Jeep Wrangler: 4WD Idiot Light is ON?
http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html
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Traction control switch will
not engage on 4WD High or Low
http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html
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Service 4wd warning light on Dash?
http://howtobyme.blogspot.com/2011/11/service-4wd-warning-light-on-dash.html
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Car automatically switches to 4wd
low?
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These are the help links related to your issue.Going through these help links,will guide you to troubleshoot and solve the issue noticed on your car.
Keep updated for more help.
Thanks.
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