Bravada 2WD L6-4.2L VIN S (2002)
5.
Replace the ECAS compressor, P/N 15006679, if the ferrule nuts are stripped or cross threaded. Refer to the Air Spring Compressor Replacement
procedure in the Service Manual.
6.
Inspect the ECAS air lines for any kinked or damaged air line from the compressor to the air springs.
7.
Replace any damaged or kinked lines using P/N 15324582 (RH) and P/N 15324581 (LH). Refer to the Air Suspension Air Line Replacement
procedure in the Service Manual.
8.
Inspect the air lines at the air springs for proper line installation. Each air line has a bubble 18-22 mm (0.70-0.80 in) from the end of the line that
acts like a stop. The bubble should be seated against the collet on the top of the air spring. When the air line is properly seated, you should not be
able to pull the air line out of the air spring without pushing down to release the line from the air spring collet.
9.
Seat the air line into the air line collet by pushing the air line into the air spring collet.
10.
Replace the air spring, P/N 15159630, if the line will not seat into the collet. Refer to the Air Spring Replacement procedure in the Service
Manual.
Important:
If very fine scratches are noticed in the air line where it seats into the collet on the air spring, replace both the air line and the air spring.
11.
Remove the air lines from the air springs and inspect the lines for very fine scratches in the line where it seats into the collet.
12.
Replace the appropriate air line, P/N 15324582 (RH) and P/N 15324581 (LH), and the air spring. Refer to the Air Suspension Air Line
Replacement and the Air Spring Replacement procedures in the Service Manual.
Air Leak Diagnosis with Soapy Water
1.
Lower the vehicle.
2.
Reinstall the # 1 30 amp ECAS fuse into the UBEC.
3.
Turn the ignition ON and allow the vehicle to rise until the compressor shuts off and the vehicle has reached its normal curb height.
4.
Turn the ignition OFF.
5.
Remove the # 1 30 amp ECAS fuse from the UBEC.
6.
Raise the vehicle.
7.
Remove the wheelhouse panel on the side that the air spring is deflated. Refer to the Wheelhouse Panel Replacement procedure in the Service
Manual. Use soapy water to aid in the diagnosis of the leak area.
8.
Spray soapy water on the top of the air spring where the line enters the collet on the air spring and look for bubbles.
9.
Spray soapy water on the air lines at the compressor connections and look for bubbles. The bubbles from the soapy water will indicate the leaking
area.
ECAS Compressor Output Procedure
Important:
Use only the accessory inflator tool assembly that comes with the vehicle. The accessory tool has a built in by pass valve and should be the only tool
used to test the compressor output.
1.
Reinstall the # 1 30 amp ECAS fuse into the UBEC.
2.
Open the rear hatch and locate the accessory inflator outlet on the right rear quarter panel.
3.
Turn the ignition ON.
4.
Install the accessory inflator tool assembly provided with the vehicle.
5.
Turn the accessory inflator switch to the on position.
Pressure
