To the top of the document
Cruze
   
GMDE Start Page Load static TOC Load dynamic TOC Help?

Transmission Shifts Hard

Diagnostic Aids

An intermittent hard shift may be caused by an intermittent clutch condition.

Test Description

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

  1. 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.

  2. A dynamic shift test is performed by shifting into the gear positions with the engine operating. Test for the correct mesh of the synchronisers and for the clutch releasing correctly. When shifting into and out of a gear, feel for the shift detent plungers and for the synchronisers sleeve for moving freely.

    3.

  3. The transmission uses a synthetic transmission fluid that allows proper synchroniser operation. The incorrect fluid may cause hard shifting by varnish build-up, or not enough lubrication for proper synchroniser operation.

Step

Action

Yes

No

DEFINITION: The transmission does not shift smoothly, or without difficulty, from one gear to the other.

1

Did you review the Symptoms - Manual Gearbox and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Manual Gearbox

2

Inspect the clutch system for proper operation. Refer to Clutch System Description and Operation .

Did you find or repair the condition?

Go to Step 12

Go to Step 3

3

  1. Perform a static shift test on the transmission.
  2. Test for the following:
    3. • Blockage preventing full shift lever movement
    • Excessive movement in the shift lever
    • Binding in the shift lever
    • Detent plungers or shift rails binding
    • Shift cable binding
    • Shift cable proper adjustment

Are you able to shift into all gears?

Go to Step 6

Go to Step 4

4
  1. Remove the floor console. Refer to Front Floor Console Replacement .
  2. Inspect for the following:
    3. • Loose mounting
    • Foreign debris

Did you find and repair the condition?

Go to Step 12

Go to Step 5

5

Inspect for proper shift cable adjustment. Refer to Manual Gearbox Gear Lever and Selector Lever Cable Adjustment .

Did you find and repair the condition?

Go to Step 12

Go to Step 6

6

  1. Perform a dynamic shift test on the transmission.
  2. Test for the following:
    3. • Detent plungers or shift rails binding
    • Synchroniser sleeve binding
    • Gear clash into only one gear
    • Gear clash into all gears

Did the transmission shift hard into all gears?

Go to Step 7

Go to Step 11

7

Inspect the transmission for the correct fluid level and type of the transmission fluid. Refer to Transmission Fluid Level Inspection .

Is the transmission at the correct level and the proper fluid being used?

Go to Step 9

Go to Step 8

8

Drain and refill the transmission with the correct type fluid. Refer to Transmission Fluid Level Inspection .

Did you find and repair the condition?

Go to Step 12

Go to Step 9

9
  1. Remove the transmission. Refer to Transmission Replacement .
  2. Inspect the clutch pressure plate and/or clutch driven plate.

Is the clutch pressure plate and/or clutch driven plate worn or faulty?

Go to Step 10

Go to Step 11

10

Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement .

Did you find and repair the condition?

Go to Step 12

Go to Step 11

11

Replace the Transmission. Refer to Transmission Replacement .

Did you find and repair the condition?

Go to Step 12

Go to Diagnostic Aids

12

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1

   


© Copyright Chevrolet. All rights reserved