GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Fuel Filler Door Release System Check?

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Go to Step 4

Go to Fuel Filler Door Release System Check

2

  1. Disconnect the fuel door release actuator connector.
  2. Connect a J 39200 digital multimeter (DMM) between terminal B and ground.

Is the measured voltage within the specified range?

10-15 V

Go to Step 4

Go to Step 3

3

Inspect the TRUNK REL fuse.

Is the fuse OK?

--

Go to Step 11

Go to Step 12

4

  1. Connect a DMM between the fuel door release actuator connector terminals A and B.
  2. Press the fuel door release switch.

Is the measured voltage within the specified range?

10-15 V

Go to Step 5

Go to Step 6

5

  1. Inspect the fuel door release actuator connector for poor terminal contact.
  2. If the contact is OK, replace the fuel door release actuator. Refer to Fuel Tank Filler Door Lock Actuator Replacement .

Is the repair complete?

--

Go to Step 13

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6

  1. Disconnect the fuel door release switch connector.
  2. Use a DMM in order to measure the resistance between switch connector terminal B and ground.

Is the resistance less than the specified value?

5 ohms

Go to Step 8

Go to Step 7

7

Repair the open in CKT 450 (BLK).

Is the repair complete?

--

Go to Step 13

--

8

  1. Connect a fused jumper across the fuel door release switch connector terminals A and B.
  2. Use a DMM in order to measure the resistance between the fuel door release actuator connector terminal A and ground.

Is the resistance less than the specified value?

5 ohms

Go to Step 9

Go to Step 10

9

  1. Inspect the fuel door release switch connector for poor terminal contact.
  2. If the contact is OK, replace the fuel door release switch. Refer to Fuel/Rear Compartment Release Switch Replacement .

Is the repair complete?

--

Go to Step 13

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10

Repair CKT 79 (PNK).

Is the repair complete?

--

Go to Step 13

--

11

Repair the open in CKT 1140 (ORN).

Is the repair complete?

--

Go to Step 13

--

12

  1. Repair the short to ground in CKT 1140 (ORN).
  2. Replace the TRUNK REL fuse.

Is the repair complete?

--

Go to Step 13

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13

  1. Ensure that any of the components removed during diagnosis are installed in place.
  2. Ensure that all of the connectors are connected.
  3. Repeat the system check. Refer to Fuel Filler Door Release System Check .

Is the system check complete?

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System OK

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