How to bleed GM ABS brakes with scan tool?
Scan Tool. 1 Step 1. Attach a pressure bleeder to the master cylinder reservoir and turn the ignition key to the On position. Pressurize the system to 35 pounds 2 Step 2. 3 Step 3.
Can You Bleed the brakes on a GM car?
Bleeding the brake system after changing the brakes can be hard on some anti-lock braking systems. The good news is that on some GM vehicles, a scan tool isn’t needed to bleed ABS brakes. A scan tool is only needed with a DBC-7 anti-lock braking system, and then only if air entered the ABS modulator during brake …
What kind of brakes does a GM car have?
The GM vehicles using the DBC-7 system include many recent Chevy and Pontiac cars, so check with your manual or dealer to see which braking system your GM vehicle has.
What happens when you bleed the brake pedal?
Bleed the brake on the opposite end next (the left front if you started with the right front). Test the brake pedal after all the brakes are bled. Once you are certain of a firm pedal, drive the vehicle at more than three miles per hour so the controller can automatically reset the system.
When to troubleshoot a GMC ABS brake system?
Instead, the ABS system will pump the brakes to provide better control over the vehicle for the driver. If you suspect you are having trouble with the GMC ABS brake system, you should troubleshoot the problem to verify whether there is a failure in the system. Open the fuse panel underneath the dash.
How to remove ABS pump sinking brake pedal?
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Why does my GMC ABS light keep coming on?
If the ABS dash light comes on and stays lit, and none of the ABS wires are damaged, it is likely that there is a partial failure in the ABS sensor. For specific information about GMC ABS braking systems, consult the particular vehicle’s manual (see Resources).
Where is the fuse on a GMC ABS system?
Remove the fuse for the ABS system with the fuse puller located on the dash panel lid. Inspect the fuse. If the fuse is popped, then you’ll need to replace it. If it is not popped, then put the fuse back into the ABS fuse slot.
What to do when your brake pedal goes to floor?
The first thing to check when your brake pedal goes to floor is to raise the hood and check the brake master cylinder’s reservoir. If the reservoir is empty or the brake fluid level is low, there is most likely a leak somewhere in the brake system.
Bleed the brake on the opposite end next (the left front if you started with the right front). Test the brake pedal after all the brakes are bled. Once you are certain of a firm pedal, drive the vehicle at more than three miles per hour so the controller can automatically reset the system.
Is there a way to bleed the rear brakes?
Stop the vehicle afterward and bleed the rear brakes. Attach a pressure bleeder to the master cylinder reservoir and turn the ignition key to the On position. Pressurize the system to 35 pounds per square inch with the bleeder screws closed. Connect the scan tool and set it to “Automatic Bleed Procedure.”