Question about 1994 Oldsmobile Cutlass Supreme

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What is the order to bleed the brakes? - 1994 Oldsmobile Cutlass Supreme

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Step by Step:
Make sure the person in the drivers seat applies adequate pressure, when another person opens the bleed valve.
Step 1: First make sure you have plenty of brake fluid and do not run out.
Step 2: Start by bleeding the Right Rear.
Step 3: Then Bleed the Left Rear.
Step 4: Right Front
Step 5: Left Front is last.
Make Sure all air has been released do not move to the next wheel until all air is out of that wheel. When done make sure Brake fluid is full. Then test pedal position. Recommend bleeding with vehicle not running.

Posted on Oct 10, 2010

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Some recommend starting with the shortest (left front) line, then right front, then left rear, then right rear (shortest to longest). Some recommend the reverse, start with the longest and work back to the shortest. I don't know that it matters, just make sure that you never let the master cylinder go dry, and that you get all the air out. Also make sure that you flush enough fluid out so that it looks clean and clear, sometimes the fluid in the wheel cylinders can be dirty. You should flush at least two or three ounces at each wheel, but you may need to flush more to get all the air out.

Once you are done, the pedal should be firm and steady, and the brake warning light on the dash should NOT be on at any time.

Posted on Oct 10, 2010

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Important:
• Use the two-person bleed procedure under the following conditions:
- Installing a new Electro-Hydraulic Control Unit (EHCU) or new Brake Pressure Modulator Valve (BPMV).
- Air is trapped in the valve body
• Do not drive the vehicle until the brake pedal feels firm.
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Raise the vehicle in order to access the system bleed screws.
Bleed the system at the right rear wheel first.
Install a clear hose on the bleed screw.
Immerse the opposite end of the hose into a container partially filled with clean DOT 3 brake fluid.
Open the bleed screw 1/2 to one full turn.
Slowly depress the brake pedal. While the pedal is depressed to its full extent, tighten the bleed screw.
Release the brake pedal and wait 10-15 seconds for the master cylinder pistons to return to the home position.
Repeat the previous steps for the remaining wheels. The brake fluid which is present at each bleed screw should be clean and free of air.
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Press the brake pedal firmly and run the Scan Tool Automated Bleed Procedure. Release the brake pedal between each test.
Bleed all four wheels again using Steps 3-9. This will remove the remaining air from the brake system.
Evaluate the feel of the brake pedal before attempting to drive the vehicle.
Bleed the system as many times as necessary in order to obtain the appropriate feel of the pedal.

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This is out of the Online GMsevice manual for a 2001 Blazer with 4-WD
Use the two-person bleed procedure under the following conditions:

Raise the vehicle in order to access the system bleed screws.
Bleed the system at the right rear wheel first.
Install a clear hose on the bleed screw.
Immerse the opposite end of the hose into a container partially filled with clean DOT 3 brake fluid.
Open the bleed screw 1/2 to one full turn.
Slowly depress the brake pedal. While the pedal is depressed to its full extent, tighten the bleed screw.
Release the brake pedal and wait 10-15 seconds for the master cylinder pistons to return to the home position.
Repeat the previous steps for the remaining wheels. The brake fluid which is present at each bleed screw should be clean and free of air.
This procedure may use more than a pint of fluid per wheel. Check the master cylinder fluid level every four to six strokes of the brake pedal in order to avoid running the system dry.
Press the brake pedal firmly and run the Scan Tool Automated Bleed Procedure . Release the brake pedal between each test.
Bleed all four wheels again using Steps 3-9. This will remove the remaining air from the brake system.
Evaluate the feel of the brake pedal before attempting to drive the vehicle.
Bleed the system as many times as necessary in order to obtain the appropriate feel of the pedal.

Good luck, i hope this helps.

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Masterclinder


You have one or more problems. Leaking wheel cylinders, leaking master cylinder, air in the brake lines of a combination. When you bleed the brakes, bleed them in this order with a positive pressure brake fluid container. Right rear, left rear, right front left front. If you bleed them on any other order, you will just push the air around in the system. Bleed until no bubbles come out.

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