GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the affected valve actuator for the following conditions:

    • Proper installation
    • Proper connection

Is the affected valve actuator correctly connected and installed?

--

System OK

Go to Step 2

2

  1. Disconnect the actuator from the valve.
  2. Inspect the valve for proper travel and effort.

Does the valve exhibit the proper travel and effort?

--

System OK

Go to Step 3

3

Inspect the electrical connector for the following conditions:

    • Improper connections
    • Loose terminals
    • Corroded terminals

Perform any repairs as necessary.

Were any repairs performed?

--

System OK

Go to Step 4

4

Inspect the actuator for proper operation.

Does the valve exhibit proper operation?

--

System OK

--