Syclone V6-262 4.3L Turbo (1991)
EHCU Module Mounting (Lines Removed)
EHCU MODULE REPLACEMENT
The Electro-Hydraulic Control Module (EHCU) is not serviceable. The module should be replaced when the diagnosis charts shows the module to
be malfunctioning.
Before replacing the EHCU module, bleed down the brake booster by depressing the brake pedal several times.
REMOVE OR DISCONNECT
1. Washer lank reservoir bolts and set washer tank reservoir out of the way.
2. Electrical connectors from the EHCU module.
3. Brake lines from EHCU module.
CAUTION: Take care not to get brake fluid on paint or electrical connections.
4. Bolts connecting upper bracket assembly to the lower bracket assembly.
5. EHCU module and upper bracket assembly from the vehicle.
6. Six bolts and the mounting bracket from the EHCU module.
INSTALL OR CONNECT
1. Mounting bracket to the EHCU module.
2. Six bolts holding the EHCU module to the mounting bracket and tighten to 9 Nm (84 in lbs).
NOTE: Over tightening these bolts could result in excessive noise transfer from the EHCU module.
3. Turn the modulator bleed valves 1/4 to 1/2 turn counter clockwise.
4. EHCU module and bracket assembly into the vehicle and tighten bolts to 27 Nm (20 ft lbs).
5. Electrical connectors to the EHCU module.
6. Brake lines to the EHCU module in the same port locations as removal and tighten fittings to 25 Nm (16 ft lbs).
7. Bleed the EHCU module before each of the wheels.
