GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition ON.
  2. Connect pins 3 and 4 of DLC connector to enter diagnostics.
  3. Check and record the codes.
  4. Exit diagnostics.
  5. Clear error codes. Refer to Clearing DTCs
  6. Enter Diagnostics.

Are any error codes present?

--

Go to Step 2

Go to the appropriate diagnosis chart and Intermittents and Poor Connections

2

Is there a single code set?

--

Go to the appropriate error code diagnosis chart.

Go to Step 3

3

  1. Disconnect the control module.
  2. Check the resistance from drive to ground on each strut.
  3. • LF strut - pin D13 to pin D10
    • RF strut - pin C13 to pin D8
    • LR strut - pin D14 to pin D11
    • RR strut - pin C14 to pin D9
    • Resistance values should be between 20ohms and 60ohms

Does the resistance value on each strut match the resistance values of the other struts?

ohms

Go to Step 1

Go to Step 4

4

Check the connector and strut cavity of the unmatching strut for the following:

    • connector alignment
    • moisture
    • dirt

Are strut cavities and connectors free from moisture and dirt and connected properly?

--

Go to Step 1

Go to Step 5

5

  1. Clean and dry the connector and strut cavity.
  2. Reconnect the connector to the strut.

Are strut cavities and connectors free from moisture and dirt and connected properly?

--

Go to Step 1

--