this is the second time its happened to me at the same exact spot, and it stays on for a few miles then turns off. just looking for a idea why it would do this. i kinda got on it a little bit going up a hill when i shifted from 4th to 5th around 50 mph or so, its not that steep but a decent size hill and when i shift into 5th and give it that much gas (it might have been a little low rpm for 5th) the abs and brake light sounds the dash alarm and the lights stay on for a little bit then goes off on its own. no check engine light comes on btw.

 

possible speed sensor on top of the rear differential--clean it or replace it

 

ill give it a look thank you.

 

What you find out?? My 06 6spd will set the same lights off when i shift it into 5th and torque out of it any thing under 1500 rpm. But i also have a SB DD drag clutch which makes drive line noise in 5th below the 1500 rpm mark.

 

i didnt find anything for sure that might cause it yet, the first place i was told to check (by a dealership) was the brake fluid level because they aparently have sensors in the master cyclinder, mine was a little low but not that low in my opinion. i also have a almost $3k SB DD clutch in my truck, if i go into 5th a little early i get some clutch noise that transfers up the shifter and a little in 6th but its not as bad.

 

Ya exactly same sounds I get, oh well I just shift higher RPM's all the time now.

 

Low brake fluid would be my first guess due to you going up hill at the time. Also check the power steering fluid. If your RPM's were too low, it could also mean your powersteering pump might not be pushing enough fluid at lower rpm's.