GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Colorado Pickup - 2WD 🢒 Engine 🢒 Engine Controls - 2.8L (LK5) 🢒 Brakes Drag

Step

Action

Yes

No

1

Were you sent here from the Hydraulic Brake Symptom table?

Go to Step 2

Go to Diagnostic Starting Point - Hydraulic Brakes

2

Is the vehicle equipped with an adjustable stop lamp switch and/or an adjustable cruise control release switch?

Go to Step 3

Go to Step 4

3
  1. Inspect the stop lamp switch for proper adjustment to ensure that the brake pedal is fully releasing.
  2. Inspect the cruise control release switch, if equipped, for proper adjustment to ensure that the brake pedal is fully releasing.

Did you find and correct a condition?

Go to Step 12

Go to Step 4

4

Inspect the drum brake system for proper operation. Refer to Drum Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 12

Go to Step 5

5

Inspect the park brake system for proper operation. Refer to Park Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 12

Go to Step 6

6

Inspect the disc brake system for proper operation. Refer to Disc Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 12

Go to Step 7

7
  1. Separate the brake booster pushrod from the brake pedal.
  2. Inspect the brake corners to determine if the brake drag condition is still present.

Do the brake corners still exhibit the brake drag condition?

Go to Step 9

Go to Step 8

8

Replace the brake pedal assembly.

Did you complete the replacement?

Go to Step 12

--

9
  1. Separate the master cylinder from the brake booster. Do not disconnect any brake pipes.
  2. Inspect the brake corners to determine if the brake drag condition is still present.

Do the brake corners still exhibit the brake drag condition?

Go to Step 11

Go to Step 10

10

Replace the brake booster assembly.

Did you complete the replacement?

Go to Step 12

--

11

Inspect the hydraulic brake system for proper operation. Refer to Hydraulic Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 12

Go to Diagnostic Starting Point - Hydraulic Brakes

12
  1. Install or connect components that were removed or disconnected during diagnosis.
  2. Road test the vehicle in order to confirm proper operation. Refer to Brake System Vehicle Road Test .

Is the condition still present?

Go to Step 2

System OK