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4x4 issue...

1K views 8 replies 3 participants last post by  Rob_mu330 
#1 ·
When I turn ny wheel while 4-wheel drive is engaged, my brakes almost give out and the truck makes a horrible moaning sound. Anyone else had this type of trouble?
 
#2 ·
What do you mean by 'brakes almost give out'? :thinking:
 
#7 ·
ABS is what I suspected, even before you mentioned the sound ... :thinking:

Do you have the traction control / etc. ?

The 4WD engagement wiring doesn't interact directly with the ABS circuits, but the traction control stuff does. The 4WD circuit interacts with the Skid Control ECU (which uses the ABS to manage the wheels).

I'm wondering if there's a hydraulic fault (like a pinched line) or an electrical fault that's causing the ABS to go nuts ... If it's the ABS, I'd just about bet the Skid Control ECU is involved somehow.
 
#8 ·
I have the off-road package with rear differential lock but i have never engaged it actually. I don't have actual traction control in the truest sense of the word though. Thanks for the comments. I've made an appointment for service tomorrow. I hope it doesn't cost an arm and a leg!!
 
#9 ·
The guy at the dealership (mechanic) told me the abs was kicking in and this feeling was normal. I don't like it but he drove it and rode with me and felt the pressure and heard the noise and still said it was the abs doing it's thing. I believe him since he told me he was just happy to not be fixing gas pedals on recall. Thanks for the help.
 
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