Workshop Repair and Service Manuals GMC SIERRA
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Brake Control and Vehicle Dynamics

ABS Description and Operation Dynamics Control ABS Control - part 6      The IPC illuminates the ABS indicator when the following occurs. The EBCM detects an ABS-disabling malfunction and sends a serial data message to theIPC requesting illumination.The IPC performs the bulb check.The IPC detects a...
ABS Description and Operation Dynamics Control ABS Control - part 5      Therefore, at the beginning of each ignitioncycle, the EBCM must perform an initialization procedure to observe how the VSES sensorsare correlated with each other and also to determine what each sensor value is whenthe...
ABS Description and Operation Dynamics Control ABS Control - part 4      When a yaw rate error isdetected, the EBCM attempts to correct the vehicle's yaw motion by applying brakepressure to one or more of the wheels. The amount of brake pressure which is appliedvaries, depending on the correction...
ABS Description and Operation Dynamics Control ABS Control - part 3      The isolation valve is opened and the dump valve is closed. The increasedpressure is delivered from the master cylinder. Electronic Brake Distribution (EBD) The electronic brake distribution (EBD) is a control system that...
ABS Description and Operation Dynamics Control ABS Control - part 2      As the wheel spins, the wheel speed sensor produces a square wave DCsignal voltage. The wheel speed sensor increases the signal frequency as the wheelspeed increases, but does not increase the signal amplitude.Yaw/lateral...
ABS Description and Operation Dynamics Control ABS Control      This vehicle is equipped with a Bosch ABS/EBD/TCS/VSES brake system. The electronicbrake control module (EBCM) and the brake pressure modulator valve is serviced separately.The brake pressure modulator valve uses a 4-circuit...
Antilock Brake System Automated Bleed Dynamics Control ABS Control - part 5      Refer toHydraulic Brake System Bleeding.If the brake pedal feel is now firm, repeat the automated bleeding procedure.If the brake pedal stills feels spongy after repeating the base hydraulic brake systembleeding procedure,...
Antilock Brake System Automated Bleed Dynamics Control ABS Control - part 4      Do not leave the bleeder valve open for longer than-60-seconds. If the RR bleeder valve was not fully bled within the-60-second cycle time, pressStart to repeat Step-47-until the brake fluid is clear of any air.Press Enter to...
Antilock Brake System Automated Bleed Dynamics Control ABS Control - part 3      When instructed by the scan tool, stop performing the brake applications and pressEnter. The scan tool will instruct to perform Steps-23–25-2-more times. When instructed by the scan tool, press Start to continue. Note:The...
Antilock Brake System Automated Bleed Dynamics Control ABS Control - part 2      Using the scan tool, perform the following steps:Select DiagnosticsSelect the appropriate vehicle informationSelect ChassisSelect Electronic Brake Control Module (EBCM)Select Special FunctionsSelect Automated BleedPress Start...
Antilock Brake System Automated Bleed Dynamics Control ABS Control      Special ToolsJ-29532 Diaphragm Pressure BleederJ-29532-A Brake Pressure Bleeder, or equivalentJ 35589-A Brake Bleeder Adapter, or equivalent Warning:At times during this brake bleed procedure brake fluid willbe under higher...
Electronic Brake Control Module Replacement Dynamics Control ABS Control      Electronic Brake Control Module Replacement Callout Component Name Caution:Always connect or disconnect the wiring harness connectorfrom the EBCM/EBTCM with the ignition switch in the OFF position.Failure to observe...
Front Wheel Speed Sensor Replacement Sensors Wheel Speed Sensors      Front Wheel Speed Sensor Replacement Callout Component Name Warning:Refer toBrake Dust Warning. Preliminary ProceduresRaise and support the vehicle. Refer toLifting and Jacking the Vehicle.Remove the tire and wheel...
Input and Output Speed Sensor Replacement Sensors Wheel Speed Sensors      Input and Output Speed Sensor Replacement Callout Component Name Preliminary ProceduresRaise and support the vehicle. Refer toLifting and Jacking the Vehicle.Remove the transmission fluid pan and filter. Refer...
Input Speed Sensor Installation Sensors Wheel Speed Sensors      Inspect the input speed sensor-(ISS) assembly forthe following conditions:Cracked or damaged housingWorn, broken or missing harness brackets; replace the ISSassembly if necessaryDamaged or worn wining or electrical...
Input Speed Sensor Removal Sensors Wheel Speed Sensors      Remove the input speed sensor-(ISS) retainingbolt-(247).Use a small tipped screwdriver to carefully pry the ISSwiring harness retaining brackets from the pump housing. Beingcareful not to damage retainer clips.Remove the...
Output Speed Sensor and Case Extension Installation Sensors Wheel Speed Sensors      .. .. .. Output Speed Sensor and Case Extension Installation Callout Component Name 1 Gasket-(2WD Output Only) 2 2WD Output Housing Extension Assembly 3 A/Trans Rear...
Output Speed Sensor and Case Extension Removal Sensors Wheel Speed Sensors      .. .. .. Output Speed Sensor and Case Extension Removal Callout Component Name 1 A/Trans Rear Case Bolt-M10-x-1.5-x-45 (Qty:-6) 2 2WD Output Housing Extension Assembly Note:There is also a 4WD option with...
Output Speed Sensor Removal (2WD) Sensors Wheel Speed Sensors      Remove the vehicle speed sensor bolt-(1) thatretains the output speed sensor-(2) to the low andreverse clutch housing – 2WD.Remove the output speed sensor-(2).Remove the vehicle speed sensor O-ring-(3) fromthe output speed...
Output Speed Sensor Replacement Sensors Wheel Speed Sensors      Output Speed Sensor Replacement Callout Component Name Preliminary Procedure Raise and support the vehicle. Refer toLifting and Jacking the Vehicle. 1 Output Speed Sensor Bolt Caution:Refer toFastener...
PIT4683F Additional Wheel Speed Sensor Diagnostics - (Jul 31 2012) Sensors Wheel Speed Sensors - part 2      Use the appropriate SI wiring diagrams to determinethe WSS Supply Voltage and WSS Low Signal Return. A. Ignition OFF, disconnect the harness connector at the suspect wheel speed sensor.B. Connect a 3 amp fused jumper wire...
PIT4683F Additional Wheel Speed Sensor Diagnostics - (Jul 31 2012) Sensors Wheel Speed Sensors      Subject: Additional Wheel Speed Sensor Diagnostics Models:  2008 - 2013 Buick Enclave 2007 - 2013 Cadillac Escalade, Escalade ESV, Escalade EXT 2009 Cadillac XLR 2007 - 2013 Chevrolet Avalanche, Silverado,...
PIT4815C Additional Vehicle Speed Sensor Diagnostic Information - (Nov 8 2012) Sensors Wheel Speed Sensors - part 2      The EBCM toggles the voltage onthis circuit to ground creating the signal. Connect the Fluke meter's red lead tocircuit 817 and the black lead to ground. Then set the meter to D/C voltage and pressthe "HZ" button.Warranty...
PIT4815C Additional Vehicle Speed Sensor Diagnostic Information - (Nov 8 2012) Sensors Wheel Speed Sensors      Subject: Additional Vehicle Speed Sensor Diagnostic Information Models:  2007-2013 Cadillac Escalade Models 2007-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2008-2013 Chevrolet Express 2008-2013...