Aspen 2WD V8-4.7L Flex Fuel (2009)
Vacuum Brake Booster: Description and Operation
Power Brake Booster - Description
Without ESP
WITHOUT ESP
All models use a tandem diaphragm, power brake booster (3).
NOTE: The power brake booster is not a repairable component. The booster must be replaced as an assembly if diagnosis indicates a
malfunction has occurred.
With ESP
WITH ESP
The booster assembly consists of a housing divided into separate chambers by two internal diaphragms. The outer edge of each diaphragm is attached to
the booster housing (1).