How to perform an operating check on the power brake booster?

To perform an operating check on the power brake booster, begin by depressing the brake pedal multiple times with the engine off to ensure there is no change in the pedal reserve distance. Then, depress the pedal and start the engine to see if it goes down slightly, indicating normal operation. To check air tightness, turn the engine on and off. Depress the brake pedal and check if it lowers farther the first time but gradually rises after the second or third time.

Genuine Chevrolet HHR Brake Booster

Brake Power Booster

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Chevrolet HHR Power Brake Booster ASSEMBLY
Part Number: 20812025
Product Specifications
- Other Name: Booster Assembly, Power Brake ; Booster, Hydraulic Power Brake Booster; Booster, Brake Booster
- Replaces: 15831183
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2011 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF PANEL, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.2L Flex, 4 Cyl 2.4L
View related parts
Chevrolet HHR Power Brake Booster ASSEMBLY
Part Number: 25862275
Product Specifications
- Other Name: Booster Assembly, Power Brake ; Booster, Hydraulic Power Brake Booster; Booster, Brake Booster
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK SS, 5 DOOR HIGH ROOF PANEL SS | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.2L Flex, 4 Cyl 2.4L
View related parts
Chevrolet HHR Power Brake Booster ASSEMBLY
Part Number: 22713809
Product Specifications
- Other Name: Booster Assembly, Power Brake ; Booster, Hydraulic Power Brake Booster; Booster, Brake Booster
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF PANEL, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L

Chevrolet HHR Brake Booster Parts Questions & Experts Answers

Power Brake Booster ASSEMBLY
20812025
Q: How to perform an operating check on the power brake booster?
A: To perform an operating check on the power brake booster, begin by depressing the brake pedal multiple times with the engine off to ensure there is no change in the pedal reserve distance. Then, depress the pedal and start the engine to see if it goes down slightly, indicating normal operation. To check air tightness, turn the engine on and off. Depress the brake pedal and check if it lowers farther the first time but gradually rises after the second or third time.