GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value

Yes

No

1

Check the main power switch.

Is the switch on?

--

Go to Step 3

Go to Step 2

2

  1. Turn on the Main Power switch.
  2. Check the circuit for power.

Is there power?

--

System OK

Go to Step 3

3

Check the power plug.

Is the power cord plugged in?

--

Go to Step 5

Go to Step 4

4

Plug in the power cord.

Is the repair complete?

--

System OK

--

5

Check the circuit for power.

Is there power?

--

Go to Step 6

Go to Step 7

6

Check the digital display.

Does the display read Full?

--

Go to Step 8

Go to Step 9

7

Restore power to the circuit.

Does the circuit have power?

--

System OK

--

8

Change the tank according to the manufacturer's instructions.

Is the replacement complete?

--

System OK

--

9

Check the digital display.

Does the display read Hi-P?

--

Go to Step 10

Go to Step 11

10

Check the valves on the unit tank.

Are the valves open?

--

System OK

--

11

Check the components.

Are the components faulty?

--

Go to Step 12

Go to Step 13

12

Operate recycling only to activate automatic air purge. Excessive air raises the tank pressure. Refer to manufacturer's instructions.

Is the automatic air purge operating?

--

System OK

--

13

Call a Tech Assist. 1-800-345-2233.

Did you call Tech Assist.?

--

System OK

--