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 1192 (Manual Transmission - Mm6/M12) >> Diagnostic Information and Procedures >> Transmission Shifts Hard >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3. A static shift test is performed by shifting into all of the gear positions with the engine not operating. While performing the test one should note how the shift lever movement is felt. Also while shifting from one gear to the other feel for binding in the shift rails. You should be able to feel the detent plungers operating when coming out of a gear and going into a gear.
  2. 6. A dynamic shift test is performed by shifting into of the gear positions with the engine operating. Test for the correct mesh of the synchronizers and for the clutch releasing correctly. When shifting into a gear and out of the gear feel the shift detent plungers and for the synchronizers sleeve for moving freely.
  3. 8. The transmission uses DEXRON® III transmission fluid that allows proper synchronizer operation. The incorrect fluid may cause hard shifting, from varnish build up or not enough lubrication for proper synchronizer operation.
    Fig 1: Transmission Shifts Hard (1 Of 2)
    G01971287Courtesy of GENERAL MOTORS CORP.
    Fig 2: Transmission Shifts Hard (2 Of 2)
    G01971288Courtesy of GENERAL MOTORS CORP.