SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 184 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 3.0L)DIAGNOSTIC TESTSDTC P2107: THROTTLE ACTUATOR CONTROL MODULE INTERNAL CIRCUITDIAGNOSTIC PROCEDURES
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Diagnostic Procedures

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Diagnostic Procedures
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Diagnostic System Check - Engine Controls? If yes, go to next step. If no, go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS .
  2. Observe the DTC information. Are DTCs P0121, P0122, P0123, P0221, or P0223 also set? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  3. Perform the idle relearn procedure. Refer to IDLE RELEARN PROCEDURE  under PROGRAMMING. Clear the DTCs with a scan tool. Turn ignition off. Start engine. Operate vehicle within the Conditions for Running the DTC. See CONDITIONS FOR RUNNING DTC . You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Does the DTC reset? If yes, go to next step. If no, go to step  14.
  4. Turn ignition off. Visually inspect the throttle body for throttle valves that are NOT in the rest position, throttle valves that are binding open or closed, or throttle valves that are free to move open or closed WITHOUT spring pressure. See DIAGNOSTIC AIDS . Did you find any of the conditions with the throttle body? If yes, go to step  12. If no, go to next step.
    5. NOTE: Disconnecting the throttle body connector will cause additional DTCs to set.
  5. Disconnect the throttle body connector. Turn ignition on, with engine off. Measure the voltage of the Throttle Actuator Control (TAC) motor control 1 and TAC motor control 2 circuits of the throttle actuator motor with a DVOM connected to ground. Is the voltage within 2-4 volts both circuits? If yes, go to next step. If no, go to next step.
  6. Is the voltage less than 2 volts? If yes, go to step  9. If no, go to step  8.
  7. Turn ignition off. Connect the test light between the TAC motor control 1 and TAC motor control 2 circuit terminals. Observe the test light as you turn ON the ignition. Does the test light flash ON and then turn OFF? If yes, go to step  10. If no, go to step  11.
  8. Test the TAC motor control circuit that measured more than the specified value for a short to voltage. Did you find and correct the condition. If yes, go to step  14. If no, go to step  13.
  9. Test the TAC motor control circuit that measured less than the specified value for an open or for a short to ground. Did you find and correct the condition? If yes, go to step  14. If no, go to step  13.
  10. Test for a poor connection or terminal tension at the throttle body connector. Did you find and correct the condition? If yes, go to step  14. If no, go to step  12.
  11. Test for a poor connection or terminal tension at the ECM. Did you find and correct the condition? If yes, go to step  14. If no, go to step  13.
  12. Replace throttle body assembly. After replacing throttle body assembly, go to step  14.
  13. Replace ECM. Perform ECM relearn procedures. See ENGINE CONTROL MODULE  under PROGRAMMING. After replacing ECM, go to next step.
  14. Clear the DTCs with a scan tool. Turn ignition off. Start engine. Operate vehicle within the Conditions for Running the DTC. See CONDITIONS FOR RUNNING 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? If yes, go to step  2. If no, go to next step.
  15. Observe the Capture Info with a scan tool. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.