My 2006 tahoe is getting a service 4WD error and traction control light on the cluster. I has replaced the transfer case recently. After driving 200 miles and using the 4HI a couple times suddenly the light showed up and the 4x4 selector buttons don't light up. Then after switching it off for a bit it started working again. Today I went on a trip but on the way back I got the light again without using the 4x4. I always leave it in 2HI. After leaving it switched off for a while it stared working again. Then after a while the error returned. There are no proper workshops here that is experienced with these vehicles so its a bit hard.
Service 4WD
- Thread starter Sandaman
- Start date
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also with this check your harness's, could have worked it's way loose after driving a while, unplug, clean with crc cleaner and then apply some dielectric grease, then plug back in and see how it goes.
Also, check the sensor wires at the front hubs and for play at the front hubs.
bad hubs "should" throw a abs code way before a service 4wd error, my money is on poor connection somewhere or stuck solenoid or actuator
Will try this and let you know thanks.
rockola1971
Full Access Member
How exactly are you "After leaving it switched off for a while it stared working again."? There is no on/off switch for the 2/4wd. You are in either 2wd hi or one of the other modes inlcuding neutral.
I mean once I get the service 4wd I leave the tahoe switched off for a bit. I dont know if it cools down or something but it starts working again. then after a while again service 4wd.
Either of those symptoms will call for a DTC, so you'll need a scanner that can read ABS and the 4wd codes. Otherwise you're in the dark about what's causing the messages.
will connect and check once i get the error again. gone for now.
