LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1327 (Automatic Transmission - Mu4 (Introduction, Service & Replacement)) >> Diagnostic Information and Procedures >> Road Test Procedure >> Drive and Reverse Engagement Test

Drive and Reverse Engagement Test

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to ON.
  2. Depress the brake pedal fully.
  3. Place the manual selector in the Park (P) range.
  4. Start the engine.
  5. Move the manual selector from the Park (P) range to the Reverse (R) range.
  6. Observe the reverse engagement.
  7. Move the manual selector from the Reverse (R) range to the Drive (D) range.
  8. Observe the drive engagement.
  9. Move the manual selector from the Drive (D) range to the Park (P) range.
  10. Turn the ignition switch to the LOCK position.
  11. Verify that the following conditions exist:
    • The reverse engagement takes approximately 1.4 seconds at the normal operating fluid temperature. If transaxle is cold run for 10 minutes to bring to proper temperature.

      Normal operating fluid temperature is 70-80°C (158-176°F).

    • The drive engagement from the reverse engagement takes approximately 1.0 seconds.
    • The reverse and the drive engagements should be immediate, but not harsh.

      If the reverse and the drive engagements are slow to engage or seem too harsh, refer to Line Pressure Check Procedure .