Test Description

2008 Chevrolet Aveo LT, AutomaticSECTION Test Description

The number below refers to the step number on the diagnostic table.

  1. 2:  This step determines if condition is present.
Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Turn the cruise On/Off control switch ON.
  4. With the scan tool, observe the Cruise Resume/Accel. Switch parameter.
Does the Cruise Resume/Accel. Switch parameter display On?
Go to Step 3  Go to Diagnostic Aids
3
  1. Turn OFF the ignition.
  2. Disconnect the cruise control switch connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool, observe the Cruise Resume/Accel. Switch parameter.
Does the Cruise Resume/Accel. Switch parameter display On?
Go to Step 4  Go to Step 5 
4 Test the cruise control resume/accel switch signal circuit for a short to voltage.
Did you find and correct the condition?
Go to Step 9  Go to Step 6 
5 Inspect for poor connections at the harness connector of the cruise control switch. Refer to Testing for Intermittent Conditions and Poor Connections .
Did you find and correct the condition?
Go to Step 9  Go to Step 8 
6 Inspect for poor connections at the harness connector of the engine control module (ECM). Refer to Testing for Intermittent Conditions and Poor Connections .
Did you find and correct the condition?
Go to Step 9  Go to Step 7 
7 Replace the ECM. Refer to:
Did you complete the replacement?
Go to Step 9  -
8 Replace the cruise control switch.
Did you complete the replacement?
Go to Step 9  -
9
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Setting the DTC.
Does the DTC reset?
Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.