I was cleaning my radiator and intercooler today and putting some rust inhibidtor on the frame and rear axle. On the way home my ABS light came on for a second then went off , 10 min later it came on while i was slowing down and my speedo started boucing from 0 to 30mph then the light went off and speedo went to normal. It did this once more after i got diesel. As soon as i got home i checked the dash by cycing on and off there was none it said it was clear. So i checked the DTC with the superchips and nothing came up ,i cleared them anyway. Any thoughts on this before i bring it in like the owners manual says to do. THANK YOU very much p.s. i love all the information on here. 110,789 miles on the truck.

 

Any chance some of that rust inhibitor got into the sensor connection on the top of the rear differential?


phox

 

Its possible,I did just about all of the rearend but only with a paint brush. will I have to replace this or just clean it. If so how. Thanks dieselfan.

 

The sensor itself makes a pretty good seal, otherwise the rear diff would be full of water.

As to the connection, some connection cleaner squirted in there should clean it good enough,
if that's the problem.


phox

 

I,ll try that tomorrow . Thanks for the quick response
dieselfan

 

I had the same symtoms, replaced the sensor , problems went away . One of the few cheap parts on that truck .

Dew