GM Service Manual Online
For 1990-2009 cars only

Object Number: 155116  Size: SF

Circuit Description

This symptom table identifies undefined DTCs which are caused by an internal malfunction in the EBCM/EBTCM.

Step

Action

Value(s)

Yes

No

1

Was the Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check

2

  1. Turn the ignition switch to the OFF position.
  2. Install a Scan Tool .
  3. Turn the ignition switch to the RUN position.
  4. Use the Scan Tool in order to clear DTCs.
  5. Turn the ignition switch to the OFF position.
  6. Turn the ignition switch to the RUN position.

Does the undefined DTC or DTCs reset?

--

Go to Step 3

Go to Step 4

3

Replace the EBCM/EBTCM.

Is the repair complete?

--

Go to Diagnostic System Check

--

4

The malfunction is not present at this time.

Is the repair complete?

--

Go to Diagnostic Aids

--