2010 Chevrolet Suburban Service Repair Manual

2007 STEERING
Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
Fastener Tightening Specifications
SCHEMATIC AND ROUTING DIAGRAMS
STEERING WHEEL AND COLUMN SCHEMATIC ICONS
Steering Wheel and Column Schematic Icons
Application
Specification
Metric English
Ignition Lock Cylinder Case Bolt 7 N.m 62 lb in
Intermediate Shaft to Steering Gear Bolt 47 N.m 35 lb ft
Horn Switch Contact Bolts 8 N.m 71 lb in
Linear Shift Assembly Bolt 10 N.m 89 lb in
Multifunction Turn Signal Switch Screws 3 N.m 27 lb in
Steering Column Bracket Screws 6 N.m 53 lb in
Steering Column Mounting Nut 27 N.m 20 lb ft
Steering Column Shift Lever Bolt 20 N.m 15 lb ft
Steering Wheel Nut 41 N.m 30 lb ft
Upper Intermediate Shaft to Lower Intermediate Shaft Bolt 50 N.m 37 lb ft
Upper Intermediate Shaft to Steering Column Nut 62 N.m 46 lb ft
Icon Icon Definition
CAUTION:
When performing service on or near the SIR
components or the SIR wiring, the SIR system
must be disabled. Refer to SIR Disabling and
Enabling . Failure to observe the correct
procedure could cause deployment of the SIR
components, personal injury, or unnecessary
SIR system repairs.
2007 Cadillac Escalade
2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Microsoft
Sunday, April 18, 2010 8:31:45 AM Page 1 © 2006 Mitchell Repair Information Company, LLC.
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STEERING WHEEL SCHEMATICS
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Fig. 1: Heated Steering Wheel Schematic
Courtesy of GENERAL MOTORS CORP.
COMPONENT LOCATOR
STEERING WHEEL AND COLUMN COMPONENT VIEWS
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Fig. 2: Steering Wheel Components
Callouts For Fig. 2
Callout Component Name
1 Horn Switch
2 Heated Steering Wheel Control Module (KA9)
3 Steering Wheel Control Switch Assembly - Right (UK3)
4 Steering Wheel Control Switch Assembly - Left (K34/KA9)
5 Horn Switch
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Fig. 3: Steering Column Components
Callouts For Fig. 3
STEERING WHEEL AND COLUMN CONNECTOR END VIEWS
Heated Steering Wheel (KA9)
1 Turn Signal Multifunction Switch
2 Ignition Lock Cylinder
3 Tow/Haul Switch
4 Steering Angle Sensor
5 Shift Interlock Solenoid
6 Theft Deterrent Control Module
7 Ignition Switch
8 Inflatable Restraint Steering Wheel Module Coil
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Fig. 4: Heated Steering Wheel (KA9) Connector End View
Heated Steering Wheel (KA9) Connector Parts Information
Heated Steering Wheel (KA9) Connector Terminal Identification
Connector Part Information
 OEM: 12047786
 Service: 12085536
 Description: 4-Way M Metri-Pack 150 Series (BK)
Terminal Part Information
 Terminal/Tray: 12047581/2
 Core/Insulation Crimp: E/A
 Release Tool/Test Probe: 12094429/J-35616-3 (GY)
Pin Wire Color Circuit No. Function
A BK 1050 Ground
B YE 5888 Heated Steering Wheel High Control
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STEERING COLUMN DISASSEMBLED VIEW
Fig. 5: Steering Column Disassembled View
Callouts For Fig. 5
C L-GN/BK 5886 Heated Steering Wheel Sensor Signal
D RD/BK 5885 Low Reference
1 Intermediate Steering Shaft
2 Steering Column
3 Upper Steering Column Cover
4 Shift Lever Seal
5 Shift Lever
6 Linear Shift Assembly
7 Ignition Cylinder and Case
8 Ignition Switch
9 Steering Wheel Trim Covers
10 Steering Wheel Switch
11 SIR Coil
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DIAGNOSTIC INFORMATION AND PROCEDURES
SYMPTOMS - STEERING WHEEL AND COLUMN
Review the system description and operation in order to familiarize yourself with the system functions. Refer to
Steering Wheel and Column Description and Operation.
Visual/Physical Inspection
 Inspect for aftermarket devices which could affect the operation of the steering wheel and column.
 Inspect the easily accessible or visible system components for obvious damage or conditions which could
cause the symptom.
Symptoms List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
 Steering Column Tilt Function Inoperative
 Ignition Key Cannot Be Removed from the Ignition Lock Cylinder
 Ignition Key Cannot Turn or Sticks in Any Position
 Noise in Steering Column
 High Shift Effort
 Looseness in Steering Column
HEATED STEERING WHEEL INDICATOR MALFUNCTION
Diagnostic Aids
 If the cruise control indicator works but the heated steering wheel indicator does not, then the problem
does not lie with the BCM or with the LED signal circuit.
12 Steering Wheel Nut
13 Horn Switch Contact Assembly
14 Steering Wheel Inflatable Restraint Module
15 Steering Wheel
16 Lower Steering Column Cover
17 Steering Wheel Switch
18 Turn Signal Cancel Cam Assembly
19 Steering Shaft and Upper Bearing Assembly
20 Tilt Assembly
21 Multifunction Turn Signal Switch
22 Steering Shaft Lower Bearing Adaptor
23 Steering Wheel Position Sensor
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 The heated steering wheel will remain ON if the heated steering wheel switch is disconnected while the
heated steering wheel is ON.
Heated Steering Wheel Indicator Malfunction
Step Action Yes No
Schematic Reference: Steering Wheel Schematics
Connector End View Reference: Steering Wheel and Column Connector End Views
DEFINITION: The heated steering wheel operates OK, but the indicator will not turn ON.
1
Did you review the Heated Steering Wheel operation
and perform the necessary inspections?
Go to Step 2
Go to Steering
Wheel and Column
Description and
Operation
2
1. Turn the ignition ON.
2. Press the heated steering wheel switch.
Does the heated steering wheel indicator turn ON?
Go to Testing for
Intermittent
Conditions and
Poor Connections Go to Step 3
3
1. Remove the SIR inflator module from the
steering wheel. Refer to Inflatable Restraint
Steering Wheel Module Replacement
2. Turn the ignition ON, and press the heated
steering wheel switch once.
3. Disconnect the heated steering wheel switch. It is
a grey connector on the left side of the steering
wheel.
4. Measure the voltage on the heated steering wheel
switch LED control circuit with a DMM
connected to ground. Refer to Circuit Testing .
Is battery voltage present on the circuit when the heater
is ON? Go to Step 4 Go to Step 5
4
Measure the voltage and frequency on the heated
steering wheel switch LED signal circuit, with a DMM
connected to B+. Refer to Circuit Testing .
Does the DMM measure 8.0 - 12.6 volts, and 130 Hz
frequency, between the LED signal circuit and B+? Go to Step 7 Go to Step 6
5
Test the heated steering switch LED control circuit for
an open. Refer to Circuit Testing .
Did you find and correct the condition? Go to Step 13 Go to Step 8
6
Test the heated steering switch LED signal circuit for
an open or short to voltage. Refer to Circuit Testing .
7
Inspect for poor connections at the heated steering
wheel switch. Refer to Testing for Intermittent
Conditions and Poor Connections and Connector
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STEERING COLUMN TILT FUNCTION INOPERATIVE
Steering Column Tilt Function Inoperative
Repairs .
8
Inspect for poor connections at the heated steering
wheel control module. Refer to Testing for
Intermittent Conditions and Poor Connections and
Connector Repairs .
9
Inspect for poor connections at the body control
module (BCM). Refer to Testing for Intermittent
Conditions and Poor Connections and Connector
Repairs .
10
Replace the heated steering wheel switch. Refer to
Steering Wheel Control Switch Assembly
Replacement .
Did you complete the replacement? Go to Step 13 -
11
Replace the heated steering wheel control module.
Refer to Steering Wheel Heat Module Replacement.
12
Replace the BCM. Refer to Control Module
References .
13
1. Install the SIR inflator module. Refer to
Inflatable Restraint Steering Wheel Module
Replacement .
2. Operate the system in order to verify the repair.
Did you correct the condition? System OK Go to Step 3
Step Action Yes No
1
Did you review the Steering Wheel and Column
Description and Operation and perform the necessary
inspections?
Go to Step 2
Go to Steering
Wheel and Column
Description and
Operation
2
Verify that the steering column tilt function is
inoperative.
Does the steering column tilt function operate
normally? System OK Go to Step 3
3
Verify that the shoe is not seized on the pivot pin.
Is the shoe seized on the pivot pin? Go to Step 9 Go to Step 4
4
Inspect the shoe grooves for dirt, burrs, or rust.
Are the shoe grooves free of dirt, burrs, and rust? Go to Step 9 Go to Step 5
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HEATED STEERING WHEEL INOPERATIVE
Heated Steering Wheel Inoperative
5
Inspect weak or broken shoe lock spring.
Is the shoe lock spring weak or broken? Go to Step 9 Go to Step 6
6
Inspect the pivot pins for binding.
Are the pivot pins binding? Go to Step 10 Go to Step 7
7
Inspect for a weak or broken wheel tilt spring.
Is the wheel tilt spring weak or broken? Go to Step 11 Go to Step 8
8
Inspect the steering column wiring harness for
tightness.
Is the steering column wiring harness too tight? Go to Step 12 Go to Step 3
9
Replace the Steering Column. Refer to Steering
Column Replacement.
Is the repair complete? Go to Step 13 -
10
Replace the pivot pins. Refer to Steering Shaft Upper
Bearing Replacement.
11
Replace the tilt spring. Refer to Tilt Spring
Replacement.
12
Reroute the steering column wiring harness to the
correct location.
Is the steering column wiring harness routed properly? Go to Step 13 -
13
Operate the steering column tilt function in order to
verify the repair.
Step Action Values Yes No
Schematic Reference: Steering Wheel Schematics
Connector End View Reference: Steering Wheel and Column Connector End Views
DEFINITION: This diagnostic is for a heated steering wheel that will not turn ON.
1
Did you review the Heated Steering Wheel
operation and perform the necessary
inspections? -
Go to Step 2
Go to Steering
Wheel and
Column
Description
and Operation
2
Attempt to operate the heated steering wheel.
Does the system operate normally?
-
Go to Testing
for
Intermittent
Conditions and
Poor
Connections Go to Step 3
Test the ignition voltage circuit at the underhood
fuse block for an open or short to ground. Refer
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3
to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
-
Go to Step 14 Go to Step 4
4
1. Remove the SIR inflator module from the
steering wheel. Refer to Inflatable
Restraint Steering Wheel Module
Replacement
2. Disconnect the heated steering wheel
switch connector. It is a grey connector on
the left side of the steering wheel.
3. Test the switch for continuity, making
sure that the switch is pressed as you test,
between the switch signal side and the
ground side of the switch. Refer to
Circuit Testing .
Did you find continuity in the switch?
-
5
1. Disconnect the green connector at the
bottom of the steering wheel (C227).
2. Test the ignition 1 voltage circuit of the
heated steering wheel module for an open
or short to ground. If the circuit is open,
Inspect both the 7.5 A inline fuse near the
SIR coil and the 15 A HTD STR/WHL
fuse in the underhood fuse block. Refer to
Circuit Testing and Wiring Repairs .
-
6
Test the ground circuit of the heated steering
wheel module for an open. Refer to Circuit
Testing and Wiring Repairs .
-
7
1. Disconnect the heated steering wheel
connector from the heated steering wheel
control module. It is a black connector on
the top right of the steering wheel.
2. Measure the resistance of the heated
steering wheel heating element.
Does the resistance measure within the specified
range?
1.58-2.86
ohms (leather
wheel)
1.69-2.93
ohms (wood
wheel)
IMPORTANT:
The thermistor resistance varies according to
the temperature. Therefore, if you measure
the resistance while the wheel is still warm,
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NOISE IN STEERING COLUMN
Noise in Steering Column
8
Measure the resistance of the heated steering
wheel thermistor.Does the resistance measure
within the specified range?
the resistance may vary outside of the
specified range.
6K-35K ohms
9
Inspect for poor connections at the heated
steering wheel switch. Refer to Testing for
Intermittent Conditions and Poor
Connections and Connector Repairs .
-
10
Inspect for poor connections at the harness
connector of the control module. Refer to
Testing for Intermittent Conditions and Poor
Connections .
Did you find the condition?
-
11
Replace the steering wheel heat module. Refer
to Steering Wheel Heat Module Replacement.
Did you complete the replacement?
-
Go to Step 14 -
12
Replace the heated steering wheel switch. Refer
to Steering Wheel Control Switch Assembly
Replacement .
-
Go to Step 14 -
13
Replace the heated steering wheel. Refer to
Steering Wheel Replacement.
-
Go to Step 14 -
14
1. Install the SIR inflator module. Refer to
Inflatable Restraint Steering Wheel
Module Replacement .
2. Operate the system in order to verify the
repair.
Did you correct the condition?
-
System OK Go to Step 3
Step Action Yes No
1
Did you review the Steering wheel and Column
inspections?
Go to Step 2
Go to Steering
Wheel and Column
Description and
Operation
2
Verify that noise is present in the steering column
during operation.
Is noise present in the steering column during
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HIGH SHIFT EFFORT
High Shift Effort
operation? Go to Step 3 System OK
3
Inspect the steering column components for looseness.
Is the steering column components loose? Go to Step 9 Go to Step 4
4
Inspect the SIR/SRS coil for noise.
Is the SIR/SRS coil noisy? Go to Step 10 Go to Step 5
5
Inspect the horn contact ring for lubrication.
Is the horn contact ring lubricated? Go to Step 11 Go to Step 6
6
Inspect the lock plate retaining ring for the correct
installation.
Is the lock plate retaining ring installed properly? Go to Step 12 Go to Step 7
7
Inspect the shaft bearing for the following conditions:
 Damage
 Lubrication
 Wear
 Proper seating
Are the bearings in need of repair or replacement? Go to Step 13 Go to Step 8
8
Inspect the steering column coupling for looseness.
Is the steering column coupling loose? Go to Step 14 Go to Step 3
9
Tighten the steering column components to
specifications. Refer to Fastener Tightening
Specifications.
Did you complete the repair? Go to Step 15 -
10
Replace the SIR coil. Refer to Inflatable Restraint
Steering Wheel Module Coil Replacement .
11
Lubricate the horn contact ring.
12
Install the lock plate retaining ring properly.
13
Repair the shaft bearings as necessary. Refer to
Steering Shaft Upper Bearing Replacement.
14
Tighten the steering column coupling to specifications.
Refer to Fastener Tightening Specifications.
15
Operate the system in order to verify the repair.
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LOOSENESS IN STEERING COLUMN
Looseness in Steering Column
Step Action Yes No
1
Did you review the Steering wheel and Column
Description and Operation?
Go to Step 2
Go to Steering
Wheel and Column
Description and
Operation
2
Verify that a high shift effort is required in order to
shift out of the PARK position.
Does the shifter operate normally? System OK Go to Step 3
3
Inspect for worn or damaged shift linkage components.
Are the shift linkage components worn or damaged? Go to Step 6 Go to Step 4
4
Inspect for a damaged linear shift assembly.
Is the linear shift assembly damaged? Go to Step 7 Go to Step 5
5
Inspect the shift cable for binding or misadjustment.
Is the shift cable binding or misadjusted? Go to Step 8 Go to Step 3
6
Replace the shift cable. Refer to Automatic
Transmission Range Selector Lever Cable
Replacement in Automatic Transmission - 4L60-
E/4L65-E or to Automatic Transmission Range
Selector Lever Cable Replacement in Automatic
Transmission - 4L80-E/4L85-E.
7
Replace the linear shift assembly. Refer to Linear
Shift Assembly Replacement.
8
Adjust the shift cable. Refer to Automatic
Transmission Range Selector Lever Cable
Adjustment in Automatic Transmission - 4L60-
E/4L65-E or to Automatic Transmission Range
Selector Lever Cable Adjustment in Automatic
Transmission - 4L80-E/4L85-E.
9
Step Action Yes No
1
Did you review the Steering Wheel and Column
inspections?
Go to Step 2
Go to Steering
Wheel and Column
Description and
Operation
2
Verify that the steering column is loose.
Is the steering column loose? Go to Step 3 System OK
Inspect the steering column mounting brackets for
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REPAIR INSTRUCTIONS
INTERMEDIATE STEERING SHAFT SEAL REPLACEMENT
Removal Procedure
3
looseness.
Are the steering column mounting brackets loose? Go to Step 8 Go to Step 4
4
Verify that the steering column bracket capsule is not
sheared.
Is the steering column bracket capsule sheared? Go to Step 9 Go to Step 5
5
Inspect the support screws for looseness.
Are the support screws loose? Go to Step 10 Go to Step 6
6
Inspect the intermediate shaft for worn joints or
looseness.
Is the intermediate joint worn or loose? Go to Step 11 Go to Step 7
7
Inspect the tilt head, support and pivot pins for
looseness.
Are there any loose components? Go to Step 9 Go to Step 2
8
Tighten the brackets to specifications. Refer to
Fastener Tightening Specifications.
9
Replace the Steering Column. Refer to Steering
Column Replacement.
10
Tighten the support screws to specifications. Refer to
Fastener Tightening Specifications.
11
Tighten or replace the intermediate shaft as needed.
Refer to the following procedures:
 Upper Intermediate Steering Shaft
Replacement
 Lower Intermediate Steering Shaft
Replacement
12
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Fig. 6: View Of Steering Column Seal & Nuts
1. Disconnect the lower intermediate shaft from the upper intermediate shaft. Refer to Lower Intermediate
Steering Shaft Replacement.
2. Remove the nuts from the studs.
3. Remove the seal from the vehicle.
Installation Procedure
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Fig. 7: View Of Steering Column Seal & Nuts
1. Install the seal to the vehicle.
2. Install the nuts to the studs.
Tighten: Tighten the nuts to 3 N.m (27 lb in).
NOTE: Refer to Fastener Notice .
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3. Connect the lower intermediate shaft to the upper intermediate shaft. Refer to Lower Intermediate
Steering Shaft Replacement.
UPPER INTERMEDIATE STEERING SHAFT REPLACEMENT
Tools Required
J 42640 Steering Column Anti-Rotation Pin
Removal Procedure
Fig. 8: Identifying J 42640
NOTE: The wheels of the vehicle must be straight ahead and the steering column
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1. Install the J 42640 in the steering column lower access hole.
2. Mark the relationships of the following components:
 Mark the relationship of the bolt and clamp at both ends of the upper intermediate shaft.
 Mark the relationship of the upper intermediate shaft to the lower intermediate shaft.
in the LOCK position before disconnecting the steering column or
intermediate shaft from the steering gear. Failure to do so will cause the
SIR coil assembly to become uncentered, which may cause damage to the
coil assembly.
IMPORTANT: Mark the relationship of the intermediate shaft components in order to
assure proper installation.
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Fig. 9: View Of Upper & Lower Intermediate Shafts & Components
3. Remove the upper intermediate shaft to lower intermediate shaft pinch bolt and nut.
4. Separate the upper intermediate shaft from the lower intermediate shaft.
5. Remove the intermediate shaft seal retaining nuts.
6. Remove the intermediate seal.
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Fig. 10: View Of Upper Intermediate Shaft Pinch Bolt, Nut & Steering Column
7. Remove the upper intermediate shaft pinch bolt and nut from the steering column.
8. Separate the intermediate shaft from the steering column.
9. Remove the upper intermediate shaft from the vehicle from under the hood.
Installation Procedure
1. Install the lower end of the upper intermediate shaft through the bulkhead.
2. Connect the upper intermediate shaft to the steering column.
IMPORTANT: If you are installing the same shaft, align the marks and the relationship of
the bolt and clamp made during the removal procedure.
NOTE: Refer to Fastener Notice .
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Fig. 11: View Of Upper Intermediate Shaft Pinch Bolt, Nut & Steering Column
3. Install the intermediate shaft pinch bolt and nut.
Tighten: Tighten the intermediate shaft pinch nut to 62 N.m (46 lb ft).
4. Position the intermediate shaft seal over the shaft.
5. Install the intermediate shaft seal nuts.
Tighten: Tighten the nuts to 3 N.m (27 lb in).
6. Connect the upper intermediate shaft to the lower intermediate shaft.
IMPORTANT: The intermediate shaft pinch bolt is held by a keeper and not to be
tightened. To obtain proper torque, tighten at the intermediate shaft nut.
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Fig. 12: View Of Upper & Lower Intermediate Shafts & Components
7. Install the upper intermediate shaft to lower intermediate shaft pinch bolt and nut.
Tighten: Tighten the bolt to 50 N.m (37 lb ft).
IMPORTANT: The upper intermediate shaft to lower intermediate shaft pinch nut is held
by a keeper and not to be tightened. To obtain proper torque, tighten at
the pinch bolt.
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Fig. 13: Identifying J 42640
8. Remove the J 42640 from the steering column lower access hole.
LOWER INTERMEDIATE STEERING SHAFT REPLACEMENT
Tools Required
J 42640 Steering Column Anti-Rotation Pin
Removal Procedure
CAUTION: Refer to SIR Caution .
Microsoft

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