Tahoe 4WD V8-393 6.5L DSL Turbo VIN S (1995)
Fig. 7 Caliper Bleeding Hose Installation
1. If vehicle is equipped with a vacuum or hydraulic booster, relieve system by applying brakes several times with engine off.
2. Fill master cylinder reservoir with DOT 3 brake fluid. Maintain full level during bleeding procedures.
3. If master cylinder is replaced or suspected to have air in the bore, bleed it before calipers.
a. Disconnect forward brake pipe connection at master cylinder and allow brake fluid to flow from connector port, then reconnect pipe but do not
tighten.
b. Slowly apply brake pedal to allow air to bleed from loose fitting, then tighten fitting before releasing brake pedal.
c. Wait 15 seconds, then repeat sequence, including 15 second wait, until all air has been purged from bore.
d. After all air has been removed from forward pipe, repeat procedure for rear pipe.
4. If the vehicle is equipped with four wheel anti-lock brakes (4WAL), the Brake Pressure Modular Valve (BPMV) may need to be bled. If the
BPMV has been replaced or is suspected of having air trapped inside, bleed system as outlined in "Anti-Lock Brakes chapter."
5. Bleed each wheel in the following sequence:
a. Right rear.
b. Left rear.
c. Right front.
d. Left front.
6. Attach a suitable hose to wheel caliper valve and immerse opposite end of hose into a suitable clean container partially filled with clean brake fluid
, Fig. 7.
7. Slowly apply brake pedal one time and hold, loosen the bleeder valve to purge air from caliper, then tighten bleeder valve and release pedal.
8. Wait 15 seconds, then repeat sequence, including 15 second wait, until all air is purged from caliper.
9. Repeat bleeding sequence at each wheel until system is bled.
10. Check brake pedal for "sponginess and brake warning lamp for an indication of unbalanced pressure. Repeat bleeding procedure to correct either
of these conditions.
Pressure
