Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 GMC Acadia SLFACTORY OEM SERVICE PROCEDURE
Section 239 (Object Detection System)
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- Object Detection Wiring Schematics
- Park Assist - Power, Ground, Serial Data and Control (UD7/UD5)
- Park Assist - Rear Sensors (UD7/UD5)
- Park Assist - Front Sensors (UD5)
- Rearview Camera (UVC)
- Lane Keep Assist (UHX-UGN) and Forward Collision Alert (UEU)
- Rear Cross Traffic Alert (UFG) and Side Object Detection (UKC)
- Collision Avoidance - Camera and Module Power, Ground and Controls (UGN)
- Collision Avoidance - Serial Data Camera, Module and Long Range Radar (UGN)
- Collision Avoidance - Serial Data Short Range Radars (UVZ)
- Safety Alert Seat (A45+UEU/UHX/UGN)
- Pedestrian Impact Detection System (B3T)
- Object Detection Wiring Schematics
- Diagnostic Information and Procedures
- DTC B094B or B094C: Left Side Object Detection Control Module/Right Side Object Detection Control Module
- DTC B094D or B094E: Left Side Object Detection Indicator Circuit/Right Side Object Detection Indicator Circuit
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0954, B0955, B0956, or B0957: Parking Assist Front Sensors
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0958, B0959, B0960, or B0961: Parking Assist Rear Sensors
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0967 or B0968: Parking Assist On/Off Switch
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing (without UGN)
- Circuit/System Testing (with UGN)
- Component Testing
- Repair Instructions
- DTC B0987: Vehicle Direction Camera Indicator Circuit
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B1011: System Disabled Information Stored
- DTC B1015: Vehicle Identification Number Information Malfunction
- DTC B101D: Electronic Control Unit Hardware
- DTC B101E: Electronic Control Unit Software (with Pedestrian Impact Detection, B3T)
- DTC B127B: Rearview Camera Input Signal Circuit
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B1405: Control Module Voltage Reference Output 2 Circuit (with rear park assist, UD7)
- DTC B1405: Control Module Voltage Reference Output 2 Circuit (with front and rear park assist UD5)
- DTC B172E or B172F: Driver Seat Cushion Left Rear/Right Rear Haptic Alert Motor Control Circuit Short
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B356A: Vehicle Direction Warning Switch Circuit Short
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B390A: Short Range Object Sensor
- DTC B390C: Long Range Radar Sensor Module Incorrect Mounting
- DTC B390D: Frontview Camera Module Incorrect Mounting
- DTC P15F6: Front Object Detection Control Module Torque Request Signal Message Counter Incorrect
- DTC P15F7: Rear Object Detection Control Module Torque Request Signal Message Counter Incorrect
- Symptoms - Object Detection
- Seat Haptic Signal Motor Malfunction
- Forward Collision Alert System Malfunction
- Parking Assist System Malfunction
- Rear Cross Traffic Alert System Malfunction
- Rear Vision Camera System Malfunction
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- Side Blind Spot Alert System Malfunction
- Lane Departure Warning System Malfunction
- Repair Instructions
- Front Seat Lane Departure Warning Actuator Replacement
- Forward Range Radar Module Replacement
- Short Range Radar Sensor Replacement (Front)
- Short Range Radar Sensor Replacement (Rear)
- Active Safety Control Module Replacement
- Forward Collision Alert Display Replacement
- Parking Assist Alarm Disable Switch Replacement
- Parking Assist Control Module Replacement (Sedan)
- Parking Assist Control Module Replacement (Coupe)
- Front Parking Assist Alarm Sensor Replacement
- Front Object Alarm Sensor Housing Replacement
- Side Object Sensing Alert Module Replacement
- Rear Parking Assist Alarm Sensor Replacement
- Rear Object Sensor Housing Replacement
- Multifunction Relay Module Bracket Replacement
- Vehicle Performance Camera Replacement
- Front View Camera Replacement (With UGN)
- Front View Camera Replacement (With UFL)
- Rearview Driver Information Camera Replacement
- Front View Camera Module Learn
- Radar Sensor Module - Long Range Learn
- Description and Operation
- Parking Assist Description and Operation (with Rear Park Assist, UD7)
- Parking Assist Description and Operation (with Front and Rear Park Assist, UD5)
- Lane Departure Warning Description and Operation
- Lane Keep Assist Description and Operation
- Cross Traffic Alert Description and Operation
- Active Safety Seat Description and Operation
- Side Blind Zone Alert Description and Operation
- Forward Collision Alert Description and Operation
- Active Safety System Description and Operation (with Active Safety System, UGN, except N America)
- Active Safety System Description and Operation (with Active Safety System, UGN, N America)
- Adaptive Cruise Control Description and Operation (with Adaptive Cruise Control, KSG, N America)
- Adaptive Cruise Control Description and Operation (with Adaptive Cruise Control, KSG, except N America)
- Rear Vision Camera Description and Operation
- Safety Alert Seat Description and Operation
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.