DTC 58. Chevrolet Joy 2008

For 1990-2009 cars

### Circuit Description

Gears are changed by the following methods:

• | The transmission control module (TCM) controlling solenoid valves A and B

• | The select lever operating the manuals valve

When the select lever is in the P, N, or R position, the manual valve and line pressure operates the gear change mechanically.

In the other positions, shifting up and down to 1st, 2nd, 3rd , and 4th gears is controlled by shift solenoid valves A and B.

### Conditions for Running the DTC

• | Automatic transmission oil temperature is between 0°C (32°F) and 120°C (248°F).

• | The fault is immediately recognized with ignition ON.

• | The fault is immediately recognized after the engine starts.

### Conditions for Setting the DTC

The shift circuit has an open or short to voltage.

### Action Taken When the DTC Sets

• | The TCM illuminates the A/T warning lamp when the diagnostic runs and fails.

• | The converter clutch remains disengaged at all times.

### Conditions for Clearing the MIL/DTC

Gears are changed by the following methods:

The TCM turns OFF the A/T warning lamp when the diagnostic runs and does not fail.

#### DTC 58

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Automatic Transmission

2

1. Ignition OFF.
2. Disconnect TCM connector.
3. Using a DMM, measure resistance between TCM connector terminal 20 and ground.

Is the resistance within the specified value?

11-14 ohms

Go to Step 3

Go to Step 5

3

1. Disconnect the shift solenoid connector.
2. Using a DMM, measure resistance between the shift solenoid connector terminal B2 and the TCM connector terminal 20.

Is the resistance greater than the specified value?

0.3 ohms

Go to Step 6

Go to Step 4

4 | Using a DMM, measure voltage between the shift solenoid connector terminal B2 and the TCM connector terminal 20. | -- | Go to Step 7 | Go to Step 8
5 | Replace the shift solenoid B. Did you complete the replacement? | -- | Go to Step 9 | --
6 | Repair an open in the shift solenoid B circuit. Did you complete the repair? | -- | Go to Step 9 | --
7 | Repair a short to voltage in the shift solenoid B circuit. Did you complete the repair? | -- | Go to Step 9 | --
8 | Replace the TCM. Refer to Transmission Control Module Replacement . Did you complete the replacement? | -- | Go to Step 9 | --

9

1. Clear the DTCs. Refer to Clearing Transmission Diagnostic Trouble Codes .
2. Start the engine.
3. Operate the vehicle within Conditions for Running the DTC.

Does the DTC reset?

--

Go to Step 2

System OK