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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0500: Vehicle Speed Sensor (VSS) Circuit ("F" Body) >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
    CAUTION: On vehicles with independent suspension, support lower control arms so drive axles are in normal horizontal position or drive axles will be damaged.
  2. Turn ignition off. Raise and support drive axles. Disable ASR/TCS system (if equipped). Start engine. With engine at idle, place transmission in gear. Using scan tool, monitor vehicle speed. If displayed vehicle speed is greater than zero, see DIAGNOSTIC AIDS . If displayed vehicle speed is zero MPH, go to next step.
  3. Turn ignition off. Disconnect VSS harness connector. Connect Signal Generator Tester (J-33431-B) to VSS harness. Turn ignition on. Set tester to generate VSS signal. Using scan tool, monitor displayed vehicle speed. If displayed vehicle speed is greater than zero MPH, go to next step. If displayed vehicle speed is zero MPH, go to step  5.
  4. Replace faulty VSS harness connector or faulty VSS. After repairs, go to step  12.
  5. Using DVOM, check voltage between VSS signal circuit to chassis ground. If voltage reading is about 5 volts, go to next step. If voltage reading is not about 5 volts, go to step  9.
  6. Using DVOM, check voltage between VSS signal circuit to VSS ground circuit. If voltage reading is about 5 volts, go to next step. If voltage reading is not about 5 volts, go to step  10.
  7. Check vehicle calibration code. If calibration is correct, go to next step. If calibration is incorrect, go to step  11.
  8. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to step  12.
  9. Repair signal circuit to VSS. After repairs, go to step  12.
  10. Repair ground circuit to VSS. After repairs, go to step  12.
  11. Install proper or most current calibration code. After entering calibration code, go to next step.
  12. Using scan tool, select DTC, CLEAR INFO function. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step  2.
  13. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test.
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