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Home/Chevrolet/Silverado 3500/Chevrolet Silverado 3500 (2002-2006)/Repair manual/Manual & Power Steering/Power Steering System: Specifications
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Power Steering System: Specifications Chevrolet Silverado 3500

Manual & Power Steering 9 illustrations ~678 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Accessory Mounting Bracket Bolts50 N.m37 lb ft
Accessory Mounting Bracket Nuts41 N.m30 lb ft
Ball Guide Screws6 N.m53 lb in
Battery Junction Block Retaining Bolt9 N.m80 lb in
Connector Fitting Assembly75 N.m55 lb ft
Coupling Shield and Lock Nut109 N.m80 lb ft
Cylinder End Fitting27 N.m20 lb ft
Filler Neck Retaining Nut25 N.m18 lb ft
Front Power Steering Pump Mounting Bolts50 N.m37 lb ft
Gear To Frame Bolts (Non-Rack and Pinion)150 N.m110 lb ft
Gear To Frame Bolts (Rack and Pinion)185 N.m136 lb ft
Inner Tie Rod to Steering Gear100 N.m74 lb ft
Intermediate Shaft Coupling Pinch Bolt45 N.m33 lb ft
Outer Tie Rod to the Steering Knuckle50 N.m37 lb ft
Pitman Arm to Gear Nut250 N.m184 lb ft
Pitman Arm to Relay Rod Nut62 N.m46 lb ft
Pitman Shaft Cover Bolts (670 Gear)62 N.m46 lb ft
Pitman Shaft Cover Bolts (700 Gear)60 N.m45 lb ft
Power Steering Cooler Mounting Bolts5 N.m44 lb in
Power Steering Mounting Bolts and Nut50 N.m37 lb ft
Power Steering Pump Mounting Bracket Bolts (6.6L Diesel)46 N.m34 lb ft
Power Steering Pump Mounting Bolts (Parallel Hybrid Truck)25 N.m18 lb ft
Power Steering Pump Mounting Bracket Bolts (Parallel Hybrid Truck)25 N.m18 lb ft
Power Steering Pump Pressure Hose Fitting (Parallel Hybrid Truck)32 N.m24 lb ft
Power Steering Pump Mounting Studs58 N.m43 lb ft
Power Steering Pump Wiring Harness Ground Bolt9 N.m80 lb in
Power Steering Rear Bracket Retaining Nuts50 N.m37 lb ft
Pressure Hose Connection (At Gear)28 N.m20 lb ft
Pressure Hose Connection (At Pump)28 N.m20 lb ft
Rack and Pinion Ground Strap Retaining Bolt10 N.m89 lb in
Rack and Pinion Adjuster Lock Nut68 N.m50 lb ft
Rack and Pinion Cylinder Fittings28 N.m20 lb ft
Rack and Pinion Hex Lock Nut30 N.m22 lb ft
Rack and Pinion Piston Plug150 N.m111 lb ft
Rear Pump Mounting Bolt50 N.m37 lb ft
Stub Shaft Housing Bolts63 N.m46 lb ft
Valve End Fitting17 N.m13 lb ft
Variable Assist Steering Actuator62 N.m46 lb ft

Fastener Tightening Specifications

Power Steering Pump Specifications

VehicleEngine CodeEngine SizeHigh Flow (Liters per Minute)High Flow (Gallons per Minute)Pressure Relief (kPa)Pressure Relief (PSI)
C15 Pickup with vacuum brakes. 7200 GVWL35/LU3 LR4 LM7/L594.3L 4.8L 5.3L10.9/12.42.9/3.39825/105141425/1525
K 15 Pickup with vacuum brakes, 7200 GVWL35/LU3 LR4 LM7/L594.3L 4.8L 5.3L10.2/11.72.7/3.19825/105141425/1525
K 15, Sierra Denali with vacuum brakesLQ46.0L1.32/14.73.5/3.99825/105141425/1525
C/K pickup 15HD/25/25HD/35 with hydroboostLQ46.0L13.2/14.73.5/3.99825/105141425/1525
C/K pickup 25/25HD/35LB7 L186.6L Diesel 8.1L13.2/14.73.5/3.99825/105141425/1525

Power Steering Pump Specifications

Scheme 1

Scheme 1: Power Steering Gear Disassembled View (670 Gear)
Scheme 1: Power Steering Gear Disassembled View (670 Gear)
CalloutComponent Name
1Hexagon Bolt
2Lash Adjuster Nut
3Pitman Shaft and Cover Assembly
4O-Ring Seal
5Steering Gear Housing Assembly
6O-Ring Seal
7O-ring Seal
8Stub Shaft Housing (680 Gear)
9Hexagon Bolt
10Stub Shaft Housing (670 Gear)
11Hexagon Bolt
12Needle Bearing Assembly
13Pitman Shaft Seal
14Backup Washer
15Retaining Ring
16Dust Seal
17Pitman Shaft Boot
18Pitman Arm Assembly
19Lock Washer
20Pitman Arm Nut

Scheme 2

Scheme 2: Power Steering Gear Disassembled View (700 Gear)
Scheme 2: Power Steering Gear Disassembled View (700 Gear)
CalloutComponent Name
1Retaining Ring
2Plug
3O-ring Seal
4Side Cover
5Adjuster Lock Nut
6Bolt
7Gasket
8Pitman Shaft
9Steering Gear Housing End Plug
10Teflon Ring
11O-ring Seal
12Rack Piston
13Balls
14Ball Guide
15Clamp
16Screw
17Housing
18Check Valve
19Flat Race
20Thrust Bearing
21Flat Race
22Worm Shaft
23Needle Bearing
24Pitman Shaft Seal
25Backup Washer
26Retaining Ring
27Dust Seal
28Pitman Shaft Boot
29Pitman Shaft Arm
30Lock Washer
31Nut
32Seal
33Stub Shaft
34Valve Spool
35Seal
36Valve Body
37O-ring Seal
38Valve Body Ring
39O-ring Seal
40Valve Body Ring
41O-ring Seal
42Valve Body Ring
43Coupling Shield Retainer and Lock Nut
44Adjuster Nut Assembly
45O-ring Seal
46Thrust Support Assembly

Scheme 3

Scheme 3: Power Steering Gear Disassembled View (Rack and Pinion)
Scheme 3: Power Steering Gear Disassembled View (Rack and Pinion)
CalloutComponent Name
1Hexagon Torque Prevailing Nut
2Tie Rod Seal
3Outer Tie Road Assembly
4Hexagon Jam Nut
5Tie Rod End Clamp
6Rack and Pinion Boot
7Boot Clamp
8Inner Tie Rod Assembly
9Shock Dampener Ring
10Adjuster Plug Lock Nut
11Cylinder Line Assembly (RH)
12Cylinder Line Assembly (LH)
13O-Ring Seal
14O-Ring Seal
15Rack and Pinion Gear Assembly (Partial)
16Needle Bearing Annulus Assembly
17Seal Adapter
18Retaining Ring
19Spool Shaft Seal
20Hexagon Lock Nut
21Dust Cover
22Shock Dampener Ring
23Inner Tie Rod Assembly
24Breather Tube
25Boot Clamp
26Rack and Pinion Boot
27Tie Rod End Clamp
28Hexagon Jam Nut
29Outer Tie Rod Assembly
30Tie Rod Seal
31Hexagon Torque Prevailing Nut

Scheme 4

Scheme 4: Power Steering Pump Disassembled View (Regular)
Scheme 4: Power Steering Pump Disassembled View (Regular)
CalloutComponent Name
1O-ring Seal
2Hydraulic Pump Housing Assembly
3Magnet
4O-ring Seals
5Rectangular Section Seal
6Control Valve
7Flow Control Spring
8Reservoir Assembly
9Reservoir Capstick
10Pump Mounting Studs
11Variable Assist Steering Actuator
12Retaining Ring
13Connector and Fitting Assembly
14O-ring Seal

Scheme 5

Scheme 5: Power Steering System Component Views
Scheme 5: Power Steering System Component Views
CalloutComponent Name
1Power Brake Booster
2Brake Pedal Position Sensor
3C205
4Accelarator Pedal Position (APP) Sensor
5Throttle Actuator Control (TAC) Module Connector

Scheme 6

Scheme 6
Scheme 6
CalloutComponent Name
142V Harness
2Engine Harness
3Battery Cable Bracket
4Electro Hydraulic Power Steering (EHPS) Module

Scheme 7

Scheme 7
Scheme 7
CalloutComponent Name
1Steering Column
2C201
3Steering Wheel Speed/Position Sensor

Brake Pedal Position Sensor Connector Part Information 15332132 3-Way F GT 150 Series (BLK) Pin Wire Color Circuit Number Function A RED 5688 Brake Pedal Position Sensor 5V Supply B DK BLU 5066 Brake Pedal Position Sensor Signal C WHT 5689 Brake Pedal Position Sensor 5V Return

Electro Hydraulic Power Steering (EHPS) C1 Connector Part Information 15355404 2-Way F Maxi 800 SLD (BLK) Pin Wire Color Circuit Number Function A RED 5875 EHPS 42V Battery B BLK 5691 EHPS 42V Ground

Electro Hydraulic Power Steering (EHPS) C2 Connector Part Information 12129225 24-Way F Micro-Pack 100 Series, Sealed (BLK) Pin Wire Color Circuit Number Function 1 - - Not Used 2 BLK/WHT 1851 Ground 3-4 - - Not Used 5 ORN 5688 Brake Pedal Position Sensor 5V Supply 6 YEL 5066 Brake Pedal Position Sensor Signal 7 GRY/BLK 5689 Brake Pedal Position Sensor 5V Return 8 TAN 2501 High Speed GMLAN Serial Data Bus- 9 TAN/WHT 2500 High Speed GMLAN Serial Data Bus+ 10 BLK/WHT 451 Ground 11 PNK 43 Accessory Voltage 12 - - Not Used 13 LT GRN 1763 Steering Wheel Position Signal A 14 - - Not Used 15 LT BLU 1764 Steering Wheel Position Signal B 16-17 - - Not Used 18 YEL/BLK 5696 EHPS Interlock Signal 19 YEL/BLK 5696 EHPS Interlock Signal 20 TAN 2501 High Speed GMLAN Serial Data Bus- 21 TAN/WHT 2500 High Speed GMLAN Serial Data Bus+ 22 PNK 1839 Ignition 1 Voltage 23-24 - - Not Used

Rear Wheel Steering Switch (NYS) Connector Part Information 12047531 10-Way F Micro-Pack 100 (BLK) Pin Wire Color Circuit Number Function 1 - - Not Used 2 ORN 2538 Brake Pedal Position Sensor Signal 3 LT BLU 2568 Brake Pedal Position Sensor 5V Return 4 TAN 2569 4 Wheel Steer Mode Indicator Control 5 BRN/WHT 230 Instrument Panel Lamps Dimming Control 6 BLK 1050 Ground 7 - - Not Used 8 PPL/WHT 1382 LED Dimming Signal/LED Dimming Supply 9 DK GRN/ WHT 2891 Rear Wheel Steering Mode Select Swtich Signal 10 DK BLU 2544 Rear Wheel Steer Mode Select Switch 5V Reference

Steering Wheel Speed/Position Sensor Connector Part Information 12052444 8-Way F Micro-Pack 100 (BLK) Pin Wire Color Circuit Number Function 1 GRY 1056 Steering Wheel Position Sensor 5-Volt Reference 2 BLK 1835 Security System Sensor Low Reference 3 LT GRN 1763 Steering Wheel Position Sensor Phase A Signal 4 LT BLU 1764 Steering Wheel Position Sensor Phase B Signal 5 WHT 1765 Steering Wheel Position Marker Pulse Signal 6 LT BLU 1059 Steering Wheel Position Sensor Signal 7 BRN 41 Ignition 3 Voltage 8 BLK/WHT 1851 Ground

Scheme 8

Scheme 8: Power Steering System Schematics
Scheme 8: Power Steering System Schematics

Scheme 9

Scheme 9
Scheme 9

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Power Steering System in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Begin the system diagnosis with the Diagnostic System Check - Power Steering System . You may want to review the Power Steering System Description and Operation (w/o Electro-Hydraulic Steering) or Power Steering System Description and Operation (w/ Electro-Hydraulic Steering) before beginning the diagnosis. The Diagnostic System Check will provide the following information

  1. The identification of the control modules which command the system
  2. The ability of the control modules to communicate through the GMLAN circuits
  3. The ability of the control module to communicate through the serial data circuit
  4. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

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