LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Cadillac
>>
2005
>>
STS V8-4.6L VIN A
>>
Repair and Diagnosis
>>
Relays and Modules
>>
Relays and Modules - Powertrain Management
>>
Relays and Modules - Computers and Control Systems
>>
Engine Control Module
>>
Description and Operation
>>
Throttle Actuator Control (Tac) System
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Throttle Actuator Control (Tac) System
ENGINE CONTROL MODULE
The engine control module (ECM) determines the driver's intent and then calculates the appropriate throttle response.