Need Help?

1989 Chevrolet 3 4 Ton Pickups Base Fleetside 131.5

1989 Chevrolet 3 4 Ton Pickups
Do you own this car?
Estimated Mileage
 Miles
Enter current mileage for most
accurate info about this vehicle


Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.

back to question list

Ask the Community

Ask Our Auto Mechanics


January 24, 2013, 11:09 pm

Richard W
Expert Mechanic

The code reader just reads codes. A scan tool can run the electrical motor in the ABS unit. When you hit the brake and it starts to skid. The ABS soleniod and valve open and close really fast to that the rear brakes don' t lock up. That is why there is a computer for the ABS. The valve is internally bypassing. That is why the pedal move to much and they don't work. If the vehicle does not go on the road and just stays on the rance I would bypass the valve.


0/0 users found this helpful.

January 25, 2013, 6:18 am

Allen L
 

That was kinda what I was thinking...on the other hand I'm always trying to learn more about cars...that kind of thing...and I've never tried to run a brake scan tool. Does it hook up to the same place you read codes at??

Do you have to run the scan tool at the same time you are bleeding the brakes??


Would the scan tool tell me if vale is defective or not??

Thanks


0/0 users found this helpful.

1 2 
Ask our panel of certified auto mechanics a question. We pay for their advice so you don't have to



My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…