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Home >> Chevrolet >> 2003 >> SSR Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 5.3L (DTC P0601 - U0107) >> Diagnostic Information & Procedures >> DTC P2108: Throttle Actuator Control (TAC) Module Performance >> Test Description

Test Description

The number below refers to the step number on the diagnostic table.

  1. 4:  Locating and repairing an individual condition may correct more than one DTC.
DTC P2108

Step Action Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views
1 Did you perform the Diagnostic System Check - Engine Controls? Go to Step 2  Go to Diagnostic System Check - Engine Controls
2 Replace the throttle actuator control (TAC) module. Refer to Throttle Actuator Control (TAC) Module Replacement .
Did you complete the replacement?		 Go to Step 3  -
3
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 2  Go to Step 4 
4  Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List System OK
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