Chevrolet Silverado / GMC Sierra. Service manual — part 2706

POWER STEERING FLUID LEAKS

17

Replace the power steering gear. Refer to
Steering Gear Replacement (Rack and
Pinion) or Steering Gear Replacement
(Non-Rack and Pinion).
Did you complete the replacement?

-

Go to Step

18

-

18

Test the power steering system for the
original condition.
Does the original condition still exist?

-

Go to Step 5

Go to Step

19

19

1. Disconnect and remove the J 44721

from the vehicle. See Special Tools.

2. Connect the vehicle power steering

pipes/hoses.

3. Bleed the power steering system and

add fluid as necessary. Refer to
Power Steering System Bleeding.

Did you complete the repair?

-

System OK

-

Step

Action

Yes

No

1

Did you review the Power Steering System
General Description?

Go to Step 2

Go to Power
Steering System
Description and
Operation

2

Inspect the power steering system for the
following:

Inspect the power steering fluid level and
condition.

Inspect for aftermarket devices which
could affect the operation of the power
steering system.

Inspect the power steering system
components for obvious damage or
conditions which could cause leaks.

If necessary, clean the power steering
system components, start the engine, and

2008 Chevrolet Silverado 1500

2008 STEERING Power Steering - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

rotate the steering wheel from stop to stop.
Turn the engine off and inspect all power
steering system components for leaks.

Is the power steering system leaking?

Go to Step 3

Go to Step 15

3

Inspect the power steering system fittings.
Are the fittings leaking?

Go to Step 9

Go to Step 4

4

Inspect the power steering hoses.
Are the hoses leaking?

Go to Step 10

Go to Step 5

5

Inspect the following power steering pump
components for leaks:

Flow control valve seal

Power steering pump shaft seal

Power steering pump reservoir and seals

Power steering pump

Is the power steering pump components
leaking?

Go to Step 11

Go to Step 6

6

Inspect the following power steering gear
components for leaks:

Power steering cylinder lines and/or seals

Power steering gear stub shaft seals

Power steering gear pitman shaft and/or
seals

Is the power steering gear components leaking?

Go to Step 12

Go to Step 7

7

Inspect the power steering cooler for leaks.
Is the power steering cooler leaking?

Go to Step 13

Go to Step 8

8

Inspect the hydraulic brake booster assembly for
leaks. Refer to Power Brake Booster Leak
Inspection .
Is the hydraulic brake booster assembly
leaking?

Go to Step 14

Go to Step 15

2008 Chevrolet Silverado 1500

2008 STEERING Power Steering - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

9

Tighten the fittings. Refer to Fastener
Tightening Specifications.Did you complete
the repair?

IMPORTANT:

If fitting is still to leaking after tightening, inspect
for damage to the fitting and seals. Replace the
damaged component as necessary.

Go to Step 15

-

10

Replace the power steering hoses. Refer to the
appropriate procedure(s):

Power Steering Gear Inlet Pipe/Hose
Replacement (Gas With Hydroboost)
or Power Steering Gear Inlet Pipe/Hose
Replacement (Gas Without
Hydroboost) or Power Steering Gear
Inlet Pipe/Hose Replacement (Diesel)

Power Brake Booster Inlet Hose
Replacement

Power Brake Booster Outlet Hose
Replacement

Power Steering Gear Outlet Pipe/Hose
Replacement (Gas With Hydroboost)
or Power Steering Gear Outlet
Pipe/Hose Replacement (Gas Without
Hydroboost) or Power Steering Gear
Outlet Pipe/Hose Replacement (Diesel)

Did you complete the repair?

Go to Step 15

-

Replace the leaking power steering pump
component. Refer to the appropriate procedure
(s):

Power Steering Pump Flow Control
Valve Replacement - Off Vehicle

Power Steering Pump Shaft Seal
Replacement

2008 Chevrolet Silverado 1500

2008 STEERING Power Steering - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

11

Power Steering Fluid Reservoir
Replacement - Off Vehicle

Power Steering Pump Replacement
(4.3L) or Power Steering Pump
Replacement (4.8L, 5.3L, 6.0L, and
6.2L) or Power Steering Pump
Replacement (6.6L)

Did you complete the repair?

Go to Step 15

-

12

Replace the leaking power steering gear
component. Refer to the appropriate procedure
(s):

Steering Gear Cylinder Pipe Assembly
and Seals Replacement - Off Vehicle

Steering Gear Pitman Shaft Seal and
Bearing Replacement - Off Vehicle

Stub Shaft Housing Replacement

Steering Gear Pitman Shaft and
Housing Cover Replacement - Off
Vehicle

Steering Gear Replacement (Rack and
Pinion) or Steering Gear Replacement
(Non-Rack and Pinion)

Did you complete the repair?

Go to Step 15

-

13

Replace the power steering fluid cooler. Refer
to Power Steering Fluid Cooler
Replacement (Without Hydroboost) or

Power Steering Fluid Cooler Replacement
(With Hydroboost)

.

Did you complete the repair?

Go to Step 15

-

14

Replace the hydraulic brake booster assembly.
Refer to Power Brake Booster Replacement
(Adjustable Pedals) or Power Brake Booster
Replacement (Non-Adjustable Pedals) .

2008 Chevrolet Silverado 1500

2008 STEERING Power Steering - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado