I have a 2005 4WD just out of warrenty. I went fast through a puddle the other day and the ABS light came on, the ABS pump under the hood also came on and stayed on! I had to pull the 60 AMP fuse under the hood to get it to stop. I figured one of the speed sensors in the front wheels got wet. Took the front wheels off cleaned and dried the sensor and hub area using an air gun, put the fuse in....pump still stayed on. Bought a new front hub/sensor assembly ($265)and tried plugging it in either side, put the fuse in, the pump still stayed on. Disconnected the battery for a bit, pump still stays on. I am begining to think I have a stuck relay, I need a wiring diagram, what book is the best to buy for the Blazer(Haynes, All Data?).

Any input would be appreciated

 

Haynes will likely be of no help for your problem. If you wanted a book, I would get nothing less than the FSM (factory service manual). A bit pricey, but well worth it if you are doing your own work on your vehicle. AlldataDIY.com is nice because you also get the TSBs (technical service bulletins) which can be great at helping you find the cause of a specific problem, but you will need to have an internet connected computer ready to browse through the information as you work.

As far as your problem, it seems that something has shorted out in the EBCM itself.

 

I took the ABS Electronic brake control module (EBCM) offand sent it to module master. They sent it back repaired within 3 days. They saved me a bundle. It cost only $150 + shipping. Dealer wanted close to $1000.

Ron

 

Thanks for posting back with the result!