no speedo...abs/brake light on!

SandBoy98 · 09-30-2008, 06:40 PM

speedo doesnt work and both abs and brake dash lights are on...put a new speed sensor on the rear end, nothing...any suggestions? maybe the abs module thats mounted under the hood? any ideas? thanks

__________________
98.5 24v 4x4,smarty,edge comp,4" TB exhaust with straight pipe and 6" tip,afe stg1 intake,2" leveling kit,stock chevy rear blocks,33x13.50x18 mtz's,newer style towing mirrors,18x9 KMC Badlands,FASS 150

totalloser · 09-30-2008, 08:49 PM

The sensor on the rear end is not the speedometer sensor. It is an ABS sensor. The Speed sensor is on the side of the transfer case towards the rear. I would look at the wires/plug first. I would take a look at your brake fluid just in case it is a coincidence. Better safe than sorry, though it is most likely from a bad speedometer circuit.

__________________
01 24v 100hp tips, 4"ss BDbrake &steering brace PSCpump 1.5"dom steering tapped box 1.5"ram manual CAD switch dual carters 3.55's LSD, big shaft nv5600/241HD 6 35's inners pulled in (no spacer) Ugly black and thrashed!

Ramtech · 09-30-2008, 11:03 PM

check the wire that runs along the differential. found one before that had been hit hard with a rock and busted the wire inside the conduit. good luck

SandBoy98 · 10-01-2008, 05:25 AM

alright thanks for the info guys...ill take a look at it tomorrow...i checked the brake fluid not to long ago and i know it has enough...what do you mean by checking it?

__________________
98.5 24v 4x4,smarty,edge comp,4" TB exhaust with straight pipe and 6" tip,afe stg1 intake,2" leveling kit,stock chevy rear blocks,33x13.50x18 mtz's,newer style towing mirrors,18x9 KMC Badlands,FASS 150

09-30-2008, 06:40 PM	#1 (permalink)
SandBoy98 Cummins Fanatic Join Date: Nov 2006 Location: Hanford Ca. Posts: 98 Thanks: 0 Thanked 0 Times in 0 Posts SandBoy98's Truck Pics	no speedo...abs/brake light on! speedo doesnt work and both abs and brake dash lights are on...put a new speed sensor on the rear end, nothing...any suggestions? maybe the abs module thats mounted under the hood? any ideas? thanks __________________ 98.5 24v 4x4,smarty,edge comp,4" TB exhaust with straight pipe and 6" tip,afe stg1 intake,2" leveling kit,stock chevy rear blocks,33x13.50x18 mtz's,newer style towing mirrors,18x9 KMC Badlands,FASS 150

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09-30-2008, 08:49 PM	#2 (permalink)
totalloser Diesel Head Join Date: Oct 2007 Location: Fort Bragg, CA Posts: 1,185 Thanks: 2 Thanked 19 Times in 11 Posts totalloser's Truck Pics	The sensor on the rear end is not the speedometer sensor. It is an ABS sensor. The Speed sensor is on the side of the transfer case towards the rear. I would look at the wires/plug first. I would take a look at your brake fluid just in case it is a coincidence. Better safe than sorry, though it is most likely from a bad speedometer circuit. __________________ 01 24v 100hp tips, 4"ss BDbrake &steering brace PSCpump 1.5"dom steering tapped box 1.5"ram manual CAD switch dual carters 3.55's LSD, big shaft nv5600/241HD 6 35's inners pulled in (no spacer) Ugly black and thrashed!

09-30-2008, 11:03 PM	#3 (permalink)
Ramtech Tech Specialist Join Date: May 2008 Location: Del Rio, TX Posts: 456 Thanks: 0 Thanked 0 Times in 0 Posts Ramtech's Truck Pics	check the wire that runs along the differential. found one before that had been hit hard with a rock and busted the wire inside the conduit. good luck

10-01-2008, 05:25 AM	#4 (permalink)
SandBoy98 Cummins Fanatic Join Date: Nov 2006 Location: Hanford Ca. Posts: 98 Thanks: 0 Thanked 0 Times in 0 Posts SandBoy98's Truck Pics	alright thanks for the info guys...ill take a look at it tomorrow...i checked the brake fluid not to long ago and i know it has enough...what do you mean by checking it? __________________ 98.5 24v 4x4,smarty,edge comp,4" TB exhaust with straight pipe and 6" tip,afe stg1 intake,2" leveling kit,stock chevy rear blocks,33x13.50x18 mtz's,newer style towing mirrors,18x9 KMC Badlands,FASS 150