Monday, April 22, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 167


Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Wiring Repairs/GMLAN Wiring Repairs)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming



B153A



DTC B153A



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC B153A 00



- Liftgate Latch Switch Signal Circuit



DTC B153A 08



- Liftgate Latch Switch Signal Circuit Signal Invalid



Diagnostic Fault Information



Circuit/System Description



The ratchet, pawl, and sector switches are part of the liftgate latch assembly and are used by the liftgate module (LGM) to determine the state of the



latch during the process of latching or unlatching. The ratchet and pawl switches will be inactive when the primary and secondary latches are latched,

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