Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1994C 2500 SUBURBAN 2WD V8-454 7.4LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - BRAKES AND TRACTION CONTROLELECTRONIC BRAKE CONTROL MODULESERVICE AND REPAIRFOUR WHEEL ANTI-LOCK BRAKE SYSTEM
1994 Chevrolet C 2500 Suburban 2WD V8-454 7.4L
Four Wheel Anti-Lock Brake System
1994 Chevrolet C 2500 Suburban 2WD V8-454 7.4LSECTION Four Wheel Anti-Lock Brake System
Fig. 224 EHCU/BPMV Mounting.:
(EHCU) Electro-Hydraulic Control Unit / (BPMV) Brake Pressure Modulator Valve Module is not serviceable and must be replaced as a unit.
1. Disconnect electrical connectors from EHCU/BPMV module.
2. Disconnect brake pipes from module.
3. Remove module and bracket assembly mounting bolts, then the module and bracket assembly from the vehicle.
4. Remove bolts attaching module to bracket assembly, Fig. 224.
5. Reverse procedure to install, noting the following:
a. Torque module to bracket bolts to 5 ft. lbs.
b. Torque bracket attaching bolts to 33 ft. lbs.
c. Torque brake line fittings to module 16 ft. lbs.
d. Bleed brake system and EHCU/BPMV module. Brake Bleeding
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.