Suburban 1/2 Ton 2WD V8-5.3L VIN T (2004)
visible in the clear adapter tube). If fluid is seen coming out of the inlet port adapter up to 65 Nm (48 lb-ft) maximum torque, the hydro-boost
booster assembly is "OK", Proceed to Step 19.
A.
If NO fluid is seen exiting from the inlet port adapter, complete Steps 19-27 and then repeat Steps 1-18.
B.
If no fluid is visible from the second evaluation, replace the hydro-boost unit. Proceed to the appropriate procedure found in this bulletin.
19.
Loosen the clamp bolt, remove the clamp containment bolt, and remove the accumulator pressure clamp. Remove the inlet port adapter from the
supply port of the booster. Wipe the excess power steering fluid off of the adapter with a clean, lint-free shop cloth. Store the adapter in a clean
location, such as a plastic bag.
20.
Reinstall the supply hose/tube to the booster.
Tighten
Tighten to 28 N.m (21 lb-ft).
21.
Clean any spilled fluid from the outside of the booster.
22.
For Express/Savana only:
^
Connect the reservoir outlet hose to the booster unit. Keeping the hose end higher than reservoir, reposition the reservoir onto the mounting
studs.
A.
Install the remote power steering reservoir mounting nuts.
Tighten
Tighten to 7 Nm (58 lb in).
23.
Start the engine and run at idle. Depress the brake pedal 5 times. Turn the steering wheel to the "steering lock" position. Hold for 1-2 seconds.
Check to see if there is any leakage from the ports/fittings.
24.
Turn the engine off.
25.
If leaks were observed, re-check that the fittings are at the recommended torque values. Repeat Steps 17 and 18.
26.
Check the power steering reservoir fluid level, add fluid if necessary.
27.
Close the hood.
Hydro-Boost(R) Replacement - Avalanche, Express, Savana, Silverado, Sierra, Suburban, Yukon XL
Tools Required
^
J 35555 Metal Mityvac
^
J 43485 Power Steering Bleeder Adapter
Removal
1.
Apply the park brake and block the wheels.
