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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1881 (Automatic Transmission - 5AT - Service, Diagnosis & Troubleshooting) >> Stall Speed Test

Stall Speed Test

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT:
    • Do not test stall speed for more than 10 seconds at a time.
    • Stall speed tests should be used for diagnostic purposes only.
    • Stall speed should be the same in D, I, L and R positions.
    • Do not test stall speed with the automatic transmission pressure gage installed.
  1. Engage the parking brake firmly, and block all four wheels.
  2. Connect the scan tool.
  3. Ensure the A/C switch is OFF.
  4. After the engine has warmed to normal operating temperature and the radiator fan turns on, shift to the D position.
  5. Fully press the brake pedal and accelerator pedal for 6-8 seconds, and note the engine speed. Do not move the shift lever while raising engine speed.

    Specification:  2400 RPM +/- 150 RPM

  6. Allow 2 minutes for cooling, then repeat the test in the I, L, and R positions.
  7. If the measurements are out of service limit, refer to High Stall Speed in Drive, Intermediate and Low , Stall Speed High in Reverse  and Low Stall Speed .
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