Road Test: Notes
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The Road Test Procedure should be performed only as part of the Symptom Diagnosis. Refer to Symptoms - Automatic Transmission .
The following test provides a method of evaluating the condition of the automatic transmission. The test is divided into the following parts:
- Low Voltage Electrical Function Check
- Hydraulic Control Function Check
- High Voltage Electric Machine Control Function Check
NOTE:
Complete the test in the sequence given.
Before the road test, ensure the following:
- The engine is performing properly.
- Transmission fluid level is correct. Refer to Transmission Fluid Level and Condition Check .
- Tire pressure is correct.
During the road test:
- Perform the test only when traffic conditions permit.
- Operate the vehicle in a controlled, safe manner.
- Observe all traffic regulations.
- To view the scan tool data while conducting this test, take along qualified help in order to operate the vehicle safely, or review the data after the drive audit.
- Observe any unusual sounds or smells.
After the road test, check the following:
- Inspect for proper transmission fluid level. Refer to Transmission Fluid Level and Condition Check .
- Inspect for any diagnostic trouble codes (DTCs) that may have set during the testing. Refer to the applicable DTC.
- Monitor the scan tool data for any abnormal readings or data.
- Inspect for fluid leaks. Refer to Fluid Leak Diagnosis .