GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value

Yes

No

DEFINITION:

The transmission does not shift smoothly or without difficulty into another gear.

1

Check the transmission for improper lubricant. Refer to Lubrication Specifications .

Is the recommended lubricant being used?

--

Go to step 2

Go to step 3

2

Check the transmission for loose shift lever housing bolts.

Are the bolts loose?

--

Go to step 4

Go to step 5

3

Drain and refill the transmission with the recommended lubricant. Refer to Fluid Replacement .

Does the transmission shift smoothly?

--

System OK

Go to step 5

4

Align the component parts and tighten the fasteners.

Refer to Fastener Tightening Specifications .

Does the transmission shift smoothly?

--

System OK

Go to step 5

5

Check for proper clutch operation.

Refer to Preliminary Checks .

Was the clutch the cause of hard shifting?

--

System OK

Go to step 6

6

  1. Remove the transmission. Refer to Transmission Replacement .
  2. Disassemble the transmission. Refer to Transmission Disassemble .
  3. Replace all worn or damaged parts.

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