GAC ECU Modules and Addresses

Observations from the map

The GAC map ranks 22 with 27 definitions; the largest module types are: ecu_module (9), driver assist and safety modules (5), door module (2).

27 of the addresses use 11-bit CAN identifiers and 0 use 29-bit identifiers. 1 definitions have scan priority 1; priority decides which module a scan starts from.

The map contains 2 safety-critical module definitions (ABS/brakes and airbag). Opening a diagnostic session on these can turn on a warning lamp; the vehicle must not be driven during the operation.

Modules in the map

Module name	Type	Address	Response	Priority
Engine	Engine Control Unit	`7E0`	`7E8`	1
Transmission	Transmission Control Unit	`7E1`	`7E9`	2
ABS/ESP/Brakes safety-critical	ABS / ESP Module	`710`	`790`	3
SRS/AirBag safety-critical	Airbag / SRS Module	`727`	`7A7`	4
ICM (Instrument cluster)	Instrument Cluster	`728`	`7A8`	5
EPS	Steering Module	`714`	`794`	6
BMS	High-Voltage Battery Module	`7E2`	`7EA`	7
VCU	High-Voltage System Modules	`7E3`	`7EB`	8
SVM (360 camera)/FAPA (Auto Parking)	Camera Module	`739`	`7B9`	9
FR/MRR/FCW (Front Radar)	Driver Assist and Safety Modules	`73E`	`7BE`	10
Front left radar	Driver Assist and Safety Modules	`712`	`792`	11
Front right radar	Driver Assist and Safety Modules	`713`	`793`	12
Rear left radar	Driver Assist and Safety Modules	`74A`	`7CA`	13
Rear right radar	Driver Assist and Safety Modules	`73F`	`7BF`	14
Parking Assistance System	Park Assist Module	`731`	`7B1`	15
DCU (HV Drive Controller)	Door Module	`7E4`	`7EC`	16
Tailgate door module	Door Module	`724`	`7A4`	17
HUD	—	`741`	`7C1`	18
IBCM	—	`720`	`7A0`	19
ACU	—	`72B`	`7AB`	20
ADAS	—	`70E`	`78E`	21
IFC_VNE/IFC_BOSCH	—	`740`	`7C0`	22
PCU	—	`723`	`7A3`	23
TMM	—	`701`	`781`	24
IPS	—	`7E6`	`7EE`	25
NIDU (Integrated Power Drive Unit)	—	`67E`	`6FE`	26
ITS (Integrated Thermal System)	—	`67B`	`6FB`	27

← ECU maps by make

See the modules in your vehicle

With an ELM327-based BLE OBD2 adapter, CarCoding scans the vehicle’s modules, reads fault codes from those it can reach and explains every code in plain language. Which modules are reachable depends on the make and on the vehicle. The app is free to download.

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Some advanced features require an in-app purchase.

Data source: the CarCoding ECU scan map (ecuDatabase.ts). The addresses and names in the table are definitions from the map; they can differ depending on the hardware and software version in your vehicle.

Disclaimer: This page offers general information and does not replace an inspection by a qualified workshop. Any work carried out on the vehicle is your own responsibility.