Thread: More frequent 3 amigos with bad bumps...wheel sensor getting worse?

Chase up a local member with a Nanocom,it should pick up where the issue is.Once triggered 3 times them lights will stay on all the time.Mine was on for ages,the sensor I sorted and replaced had over 200 faults registered against it.
Andrew

Thanks Andy - I think I understood from one of your threads about your problems that the traction control still works even if the lights are permanently logged on...or am I wrong about that.

Cheers

Yes the sytem is still operational,in the event of a total faliure of the sensor,ABS/TC wont work on that wheel but will on the others.
A Nanocom reading will tell you wich sensor is the issue,assuming it is a sensor.
Andrew

sounds more like a bad joint in your abs modulator, and it is possible even though you have a new one, see this post

http://www.hummerknowledgebase.com/brakes/absmod.pdf

Well I've just started a 120km round trip each day for work and they come on every day day now. Always clears on a re-start but I'm getting peed off. Sometimes on start up, sometimes while moving. Thought it might have been low/dodgy/squeely pads but occurs even when not braking.
Not happy!

see my post above, i think often this problem is mis-diagnosed.
my front bake pads squeal and never set off the 3 amigos.
i had an intermittant problem initially which was front passenger wheel speed sensor - the SLABS ECU told me this, i replaced it and then 8 weeks later the 3 amigos were coming on every day over bumps - assumed another dodgy sensor but it was a dry joint in the modulator.

3 faults of the ABS wheel spend sensor generally leaves 3 amigos on constantly... whereas i think the abs modulator issue will bring the lights up but they go away after you restart the car.... and then come back on when the connection is lost..

Andrew

Thanks matey - yep mine has come on about 5 times now and goes away on re-start.

I will look at your thread to see if there is an easy at home fix.

Cheers

PS. Off to Fraser this week, very powdery at moment so keen for her to work properly if possible. I have found the TCS, particularly at walking pace to be very effective is deep soft sand.

Interesting article. I see now that MR have done a few kits - about $200 for the parts - Shuttle Valve Kit and fitting them at a guess would be about 2-3 hours. Much better than going off to buy a replacement modulator unit.

Cheers