2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
SPECIFICATIONS FASTENER TIGHTENING SPECIFICATIONS Fastener Tightening Specifications Specification Application Ignition Lock Cylinder Case Bolt Intermediate Shaft to Steering Gear Bolt Horn Switch Contact Bolts Linear Shift Assembly Bolt Multifunction Turn Signal Switch Screws Steering Column Bracket Screws Steering Column Mounting Nut Steering Column Shift Lever Bolt Steering Wheel Nut Upper Intermediate Shaft to Lower Intermediate Shaft Bolt Upper Intermediate Shaft to Steering Column Nut
Metric 7 N.m 47 N.m 8 N.m 10 N.m 3 N.m 6 N.m 27 N.m 20 N.m 41 N.m 50 N.m 62 N.m
English 62 lb in 35 lb ft 71 lb in 89 lb in 27 lb in 53 lb in 20 lb ft 15 lb ft 30 lb ft 37 lb ft 46 lb ft
SCHEMATIC AND ROUTING DIAGRAMS STEERING WHEEL AND COLUMN SCHEMATIC ICONS Steering Wheel and Column Schematic Icons 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.
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
STEERING WHEEL SCHEMATICS
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Fig. 1: Heated Steering Wheel Schematic Courtesy of GENERAL MOTORS CORP.
COMPONENT LOCATOR STEERING WHEEL AND COLUMN COMPONENT VIEWS
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Fig. 2: Steering Wheel Components Courtesy of GENERAL MOTORS CORP. Callouts For Fig. 2 Callout 1 2 3 4 5
Component Name Horn Switch Heated Steering Wheel Control Module (KA9) Steering Wheel Control Switch Assembly - Right (UK3) Steering Wheel Control Switch Assembly - Left (K34/KA9) Horn Switch
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Fig. 3: Steering Column Components Courtesy of GENERAL MOTORS CORP. Callouts For Fig. 3 Callout 1 2 3 4 5 6 7 8
Component Name Turn Signal Multifunction Switch Ignition Lock Cylinder Tow/Haul Switch Steering Angle Sensor Shift Interlock Solenoid Theft Deterrent Control Module Ignition Switch Inflatable Restraint Steering Wheel Module Coil
STEERING WHEEL AND COLUMN CONNECTOR END VIEWS Heated Steering Wheel (KA9)
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Fig. 4: Heated Steering Wheel (KA9) Connector End View Courtesy of GENERAL MOTORS CORP. Heated Steering Wheel (KA9) Connector Parts Information 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)
Heated Steering Wheel (KA9) Connector Terminal Identification Pin Wire Color Circuit No. Function A BK 1050 Ground B YE 5888 Heated Steering Wheel High Control Microsoft Sunday, April 18, 2010 8:31:46 AM
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
C D
L-GN/BK RD/BK
5886 5885
Heated Steering Wheel Sensor Signal Low Reference
STEERING COLUMN DISASSEMBLED VIEW
Fig. 5: Steering Column Disassembled View Courtesy of GENERAL MOTORS CORP. Callouts For Fig. 5 Callout 1 2 3 4 5 6 7 8 9 10 11
Component Name Intermediate Steering Shaft Steering Column Upper Steering Column Cover Shift Lever Seal Shift Lever Linear Shift Assembly Ignition Cylinder and Case Ignition Switch Steering Wheel Trim Covers Steering Wheel Switch SIR Coil
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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Steering Wheel Nut Horn Switch Contact Assembly Steering Wheel Inflatable Restraint Module Steering Wheel Lower Steering Column Cover Steering Wheel Switch Turn Signal Cancel Cam Assembly Steering Shaft and Upper Bearing Assembly Tilt Assembly Multifunction Turn Signal Switch Steering Shaft Lower Bearing Adaptor Steering Wheel Position Sensor
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.
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
ď Ź
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. Did you review the Heated Steering Wheel operation Go to Steering and perform the necessary inspections? Wheel and Column 1 Description and Go to Step 2 Operation 1. Turn the ignition ON. 2. Press the heated steering wheel switch.
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Does the heated steering wheel indicator turn ON?
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Go to Step 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 .
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Go to Testing for Intermittent Conditions and Poor Connections
Is battery voltage present on the circuit when the heater is ON? 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+? Test the heated steering switch LED control circuit for an open. Refer to Circuit Testing . Did you find and correct the condition? Test the heated steering switch LED signal circuit for an open or short to voltage. Refer to Circuit Testing . Did you find and correct the condition? Inspect for poor connections at the heated steering wheel switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector
Go to Step 4
Go to Step 5
Go to Step 7
Go to Step 6
Go to Step 13
Go to Step 8
Go to Step 13
Go to Step 9
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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Repairs . Did you find and correct the condition? Inspect for poor connections at the heated steering wheel control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? Inspect for poor connections at the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? Replace the heated steering wheel switch. Refer to Steering Wheel Control Switch Assembly Replacement . Did you complete the replacement? Replace the heated steering wheel control module. Refer to Steering Wheel Heat Module Replacement. Did you complete the replacement? Replace the BCM. Refer to Control Module References . Did you complete the replacement?
Go to Step 13
Go to Step 10
Go to Step 13
Go to Step 11
Go to Step 13
Go to Step 12
Go to Step 13
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Go to Step 13
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Go to Step 13
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System OK
Go to Step 3
Yes
Go to Step 2
No Go to Steering Wheel and Column Description and Operation
System OK
Go to Step 3
Go to Step 9
Go to Step 4
Go to Step 9
Go to Step 5
1. Install the SIR inflator module. Refer to Inflatable Restraint Steering Wheel Module Replacement . 2. Operate the system in order to verify the repair.
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Did you correct the condition? STEERING COLUMN TILT FUNCTION INOPERATIVE Steering Column Tilt Function Inoperative Step Action Did you review the Steering Wheel and Column Description and Operation and perform the necessary 1 inspections?
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3 4
Verify that the steering column tilt function is inoperative. Does the steering column tilt function operate normally? Verify that the shoe is not seized on the pivot pin. Is the shoe seized on the pivot pin? Inspect the shoe grooves for dirt, burrs, or rust. Are the shoe grooves free of dirt, burrs, and rust?
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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Inspect weak or broken shoe lock spring. Is the shoe lock spring weak or broken? Inspect the pivot pins for binding. Are the pivot pins binding? Inspect for a weak or broken wheel tilt spring. Is the wheel tilt spring weak or broken? Inspect the steering column wiring harness for tightness. Is the steering column wiring harness too tight? Replace the Steering Column. Refer to Steering Column Replacement. Is the repair complete? Replace the pivot pins. Refer to Steering Shaft Upper Bearing Replacement. Is the repair complete? Replace the tilt spring. Refer to Tilt Spring Replacement. Is the repair complete? Reroute the steering column wiring harness to the correct location. Is the steering column wiring harness routed properly? Operate the steering column tilt function in order to verify the repair. Did you correct the condition?
Go to Step 9
Go to Step 6
Go to Step 10
Go to Step 7
Go to Step 11
Go to Step 8
Go to Step 12
Go to Step 3
Go to Step 13
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Go to Step 13
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Go to Step 13
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Go to Step 13
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System OK
Go to Step 3
HEATED STEERING WHEEL INOPERATIVE Heated Steering Wheel Inoperative 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. Did you review the Heated Steering Wheel Go to Steering operation and perform the necessary Wheel and 1 inspections? Column Description Go to Step 2 and Operation Attempt to operate the heated steering wheel. Go to Testing for Does the system operate normally? Intermittent 2 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 Microsoft Sunday, April 18, 2010 8:31:46 AM
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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to Circuit Testing and Wiring Repairs . Did you find and correct the condition?
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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 .
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Did you find and correct the condition? Test the ground circuit of the heated steering wheel module for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?
Go to Step 4
Go to Step 5
Go to Step 9
Go to Step 14
Go to Step 6
Go to Step 14
Go to Step 7
Go to Step 8
Go to Step 13
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Did you find continuity in the switch? 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 .
Go to Step 14
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1. Disconnect the heated steering wheel connector from the heated steering wheel 1.58-2.86 control module. It is a black connector on ohms (leather the top right of the steering wheel. wheel) 2. Measure the resistance of the heated 1.69-2.93 steering wheel heating element. ohms (wood wheel) Does the resistance measure within the specified range? 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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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
the resistance may vary outside of the specified range.
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Measure the resistance of the heated steering wheel thermistor.Does the resistance measure within the specified range? Inspect for poor connections at the heated steering wheel switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? 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? Replace the steering wheel heat module. Refer to Steering Wheel Heat Module Replacement. Did you complete the replacement? Replace the heated steering wheel switch. Refer to Steering Wheel Control Switch Assembly Replacement . Did you complete the replacement? Replace the heated steering wheel. Refer to Steering Wheel Replacement. Did you complete the replacement?
6K-35K ohms
1. Install the SIR inflator module. Refer to Inflatable Restraint Steering Wheel Module Replacement . 2. Operate the system in order to verify the repair.
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Did you correct the condition?
Go to Step 10
Go to Step 13
Go to Step 14
Go to Step 12
Go to Step 11
Go to Step 11
Go to Step 14
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Go to Step 14
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Go to Step 14
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System OK
Go to Step 3
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NOISE IN STEERING COLUMN Noise in Steering Column Step Action Did you review the Steering wheel and Column Description and Operation and perform the necessary 1 inspections?
Yes
Go to Step 2 2
No Go to Steering Wheel and Column Description and Operation
Verify that noise is present in the steering column during operation. Is noise present in the steering column during
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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operation? Inspect the steering column components for looseness. Is the steering column components loose? Inspect the SIR/SRS coil for noise. Is the SIR/SRS coil noisy? Inspect the horn contact ring for lubrication. Is the horn contact ring lubricated? Inspect the lock plate retaining ring for the correct installation. Is the lock plate retaining ring installed properly? Inspect the shaft bearing for the following conditions:
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Go to Step 3
System OK
Go to Step 9
Go to Step 4
Go to Step 10
Go to Step 5
Go to Step 11
Go to Step 6
Go to Step 12
Go to Step 7
Go to Step 13
Go to Step 8
Go to Step 14
Go to Step 3
Go to Step 15
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Go to Step 15
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Go to Step 15
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Go to Step 15
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Go to Step 15
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Go to Step 15
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System OK
Go to Step 3
Damage Lubrication Wear Proper seating
Are the bearings in need of repair or replacement? Inspect the steering column coupling for looseness. Is the steering column coupling loose? Tighten the steering column components to specifications. Refer to Fastener Tightening Specifications. Did you complete the repair? Replace the SIR coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement . Did you complete the repair? Lubricate the horn contact ring. Did you complete the repair? Install the lock plate retaining ring properly. Did you complete the repair? Repair the shaft bearings as necessary. Refer to Steering Shaft Upper Bearing Replacement. Did you complete the repair? Tighten the steering column coupling to specifications. Refer to Fastener Tightening Specifications. Did you complete the repair? Operate the system in order to verify the repair. Did you correct the condition?
HIGH SHIFT EFFORT High Shift Effort Microsoft Sunday, April 18, 2010 8:31:46 AM
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Step 1
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Action Did you review the Steering wheel and Column Description and Operation?
Verify that a high shift effort is required in order to shift out of the PARK position. Does the shifter operate normally? Inspect for worn or damaged shift linkage components. Are the shift linkage components worn or damaged? Inspect for a damaged linear shift assembly. Is the linear shift assembly damaged? Inspect the shift cable for binding or misadjustment. Is the shift cable binding or misadjusted? Replace the shift cable. Refer to Automatic Transmission Range Selector Lever Cable Replacement in Automatic Transmission - 4L60E/4L65-E or to Automatic Transmission Range Selector Lever Cable Replacement in Automatic Transmission - 4L80-E/4L85-E. Did you complete the repair? Replace the linear shift assembly. Refer to Linear Shift Assembly Replacement. Did you complete the repair? Adjust the shift cable. Refer to Automatic Transmission Range Selector Lever Cable Adjustment in Automatic Transmission - 4L60E/4L65-E or to Automatic Transmission Range Selector Lever Cable Adjustment in Automatic Transmission - 4L80-E/4L85-E. Did you complete the repair? Operate the system in order to verify the repair. Did you correct the condition?
Yes
Go to Step 2
No Go to Steering Wheel and Column Description and Operation
System OK
Go to Step 3
Go to Step 6
Go to Step 4
Go to Step 7
Go to Step 5
Go to Step 8
Go to Step 3
Go to Step 9
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Go to Step 9
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Go to Step 9
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System OK
Go to Step 3
Yes
Go to Step 2
No Go to Steering Wheel and Column Description and Operation
Go to Step 3
System OK
LOOSENESS IN STEERING COLUMN Looseness in Steering Column Step Action Did you review the Steering Wheel and Column Description and Operation and perform the necessary 1 inspections? 2
Verify that the steering column is loose. Is the steering column loose? Inspect the steering column mounting brackets for
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
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looseness. Are the steering column mounting brackets loose? Verify that the steering column bracket capsule is not sheared. Is the steering column bracket capsule sheared? Inspect the support screws for looseness. Are the support screws loose? Inspect the intermediate shaft for worn joints or looseness. Is the intermediate joint worn or loose? Inspect the tilt head, support and pivot pins for looseness. Are there any loose components? Tighten the brackets to specifications. Refer to Fastener Tightening Specifications. Did you complete the repair? Replace the Steering Column. Refer to Steering Column Replacement. Did you complete the replacement? Tighten the support screws to specifications. Refer to Fastener Tightening Specifications. Did you complete the repair? Tighten or replace the intermediate shaft as needed. Refer to the following procedures:
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Go to Step 8
Go to Step 4
Go to Step 9
Go to Step 5
Go to Step 10
Go to Step 6
Go to Step 11
Go to Step 7
Go to Step 9
Go to Step 2
Go to Step 12
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Go to Step 12
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Go to Step 12
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Go to Step 12
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System OK
Go to Step 3
Upper Intermediate Steering Shaft Replacement Lower Intermediate Steering Shaft Replacement
Did you complete the repair? Operate the system in order to verify the repair. Did you correct the condition?
REPAIR INSTRUCTIONS INTERMEDIATE STEERING SHAFT SEAL REPLACEMENT Removal Procedure
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2007 Cadillac Escalade 2007 STEERING Steering Wheel and Column - Avalanche, Escalade, Suburban, Tahoe & Yukon
Fig. 6: View Of Steering Column Seal & Nuts Courtesy of GENERAL MOTORS CORP. 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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