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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Corvette 🢒 Body and Accessories 🢒 Body Control System 🢒 Hatch Release Inoperative

Hatch Release Inoperative Domestic

Hatch Release Inoperative -- -- (Domestic)

Step

Action

Value(s)

Yes

No

DEFINITION: The fog lamp switch/rear compartment lid release switch does not open the rear hatch when activated.

1

Were you sent here from the Hatch Release System Check?

--

Go to Step 2

Go to Hatch Release System Check

2
  1. Disconnect the rear compartment lid release switch connector.
  2. Connect a DMM between ground and the fog lamp switch/rear compartment lid release switch terminal 1.
  3. Use the DMM to measure the voltage at terminal 1 of the switch.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 8

Go to Step 3

3

Check the F/TANKDR MiniFuse® #32 for an open circuit.

Is the fuse open?

--

Go to Step 4

Go to Step 5

4

Replace the F/TANKDR MiniFuse® #32.

Does the F/TANKDR MiniFuse® #32 immediately open when installed?

--

Go to Step 6

Go to Step 7

5

Repair the open in CKT 2840.

Is the repair complete?

--

Go to Hatch Release System Check

--

6

Repair a short to ground in CKT 2840.

Is the repair complete?

--

Go to Hatch Release System Check

--

7

Repair a short to ground in CKT 1576.

Is the repair complete?

--

Go to Hatch Release System Check

--

8
  1. Disconnect the Body Control Module (BCM) connector C2.
  2. Connect a DMM between connector C2 terminal D9 of the Body Control Module (BCM) and ground.
  3. Reconnect the rear compartment lid release switch connector.
  4. Press the rear compartment lid release switch button.
  5. Measure the available voltage at the Body Control Module (BCM) connector C2 terminal D9.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 12

Go to Step 9

9
  1. Disconnect the rear compartment lid release switch connector.
  2. Connect a DMM between terminal 6 and terminal 1 of the fog lamp switch/rear compartment lid release switch.
  3. Depress the hatch release button and measure across the switch for continuity with the button depressed.

Is continuity present across the hatch release switch when the button is depressed?

--

Go to Step 10

Go to Step 11

10

Repair the open in CKT 1576.

Is the repair complete?

--

Go to Hatch Release System Check

--

11

Replace the fog lamp switch/rear compartment lid release switch.

Refer to Rear Compartment Lid Switch Replacement

Is the repair complete?

--

Go to Hatch Release System Check

--

12
  1. Disconnect the Body Control Module (BCM) connector C1.
  2. Connect a fused jumper wire between the Body Control Module (BCM) connector C1 terminal B9 and ground.

With the fused jumper connected, does the rear hatch open?

--

Go to Step 13

Go to Step 14

13

Replace the Body Control Module (BCM) and reprogram as needed.

Refer to Body Control Module Replacement

Is the repair complete?

--

Go to Hatch Release System Check

--

14
  1. Remove the HTCHTRK REL Micro Relay #39 from the instrument panel electrical center.
  2. Connect a DMM between the Body Control Module (BCM) connector C1 terminal B9 and the CKT 1344 terminal inside the instrument panel electrical center which is used for the HTCHTRK REL Micro Relay #39.
  3. Measure CKT 1344 for continuity between the instrument panel electrical center CKT 1344 terminal and the Body Control Module (BCM) connector C1 terminal B9.

Is CKT 1344 continuous between these two terminals?

--

Go to Step 16

Go to Step 15

15

Repair the open in CKT 1344.

Is the repair complete?

--

Go to Hatch Release System Check

--

16

Connect a fused jumper wire between the BATTERY CKT terminal and the CKT 383 terminal inside the instrument panel electrical center which is used for the HTCHTRK REL Micro Relay #39.

With the fused jumper connected, does the rear hatch open?

--

Go to Step 17

Go to Step 18

17

Replace the HTCHTRK REL Micro Relay #39.

Is the repair complete?

--

Go to Hatch Release System Check

--

18

Check the HTCHTRK MiniFuse® #26 for an open circuit.

Is the fuse open?

--

Go to Step 19

Go to Step 26

19
  1. Open the rear hatch using the manual release system.
  2. Disconnect both RH/LH rear compartment lid lock release solenoids.
  3. Connect a fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  4. Replace the HTCHTRK MiniFuse® #26.

Does the HTCHTRK MiniFuse® #26 immediately open when installed?

--

Go to Step 20

Go to Step 21

20

Repair a short to ground in CKT 383.

Is the repair complete?

--

Go to Hatch Release System Check

--

21
  1. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal.
  2. Reconnect only the LH rear compartment lid lock release solenoid.
  3. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Does the HTCHTRK MiniFuse® #26 immediately open when the fused jumper wire is reinstalled?

--

Go to Step 22

Go to Step 23

22

Replace the LH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

23
  1. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal.
  2. Disconnect the LH rear compartment lid lock release solenoid.
  3. Reconnect only the RH rear compartment lid lock release solenoid.
  4. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Does the HTCHTRK MiniFuse® #26 immediately open when the fused jumper wire is reinstalled?

--

Go to Step 24

Go to Step 25

24

Replace the RH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

25

Carefully inspect the rear hatch lock release mechanisms for binding and repair.

Is the repair complete?

--

Go to Hatch Release System Check

--

26
  1. Connect the DMM between the LH rear compartment lid lock release solenoid terminal B and ground.
  2. Measure CKT 150 for continuity to ground.

Is CKT 150 continuous to G302?

--

Go to Step 28

Go to Step 27

27

Repair the open in CKT 150 between the LH rear compartment lid lock release solenoid connector and G302.

Is the repair complete?

--

Go to Hatch Release System Check

--

28
  1. Connect the DMM between the RH rear compartment lid lock release solenoid terminal B and ground.
  2. Measure CKT 150 for continuity to ground.

Is CKT 150 continuous to G302?

--

Go to Step 30

Go to Step 29

29

Repair the open in CKT 150 between the RH rear compartment lid lock release solenoid connector and G302.

Is the repair complete?

--

Go to Hatch Release System Check

--

30

Check the operation of each rear compartment lid lock release solenoid individually.

  1. Reconnect the LH rear compartment lid lock release solenoid.
  2. Connect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  3. Disconnect the LH rear compartment lid lock release solenoid.
  4. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  5. Reconnect the RH rear compartment lid lock release solenoid.
  6. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Do both of the rear compartment lid lock release solenoids operate properly when the fused jumper wire is installed?

--

Go to Step 32

Go to Step 31

31

Replace the LH or RH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

32

Repair the binding concern with the LH/RH rear compartment lid lock release solenoid mechanisms or replace weak rear hatch strut supports.

Is the repair complete?

--

Go to Hatch Release System Check

--

Hatch Release Inoperative Export

Hatch Release Inoperative (Export)

Step

Action

Value(s)

Yes

No

DEFINITION: The rear compartment lid/fuel tank filler door lock release switch does not open the rear hatch when activated.

1

Were you sent here from the Hatch Release System Check?

--

Go to Step 2

Go to Hatch Release System Check

2
  1. Disconnect the rear compartment lid release switch connector.
  2. Connect a DMM between ground and the rear compartment lid/fuel tank filler door lock release switch connector terminal D.
  3. Use the DMM to measure the voltage at terminal D of the switch.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 8

Go to Step 3

3

Check the F/TANKDR MiniFuse® #32 for an open circuit.

Is the fuse open?

--

Go to Step 4

Go to Step 5

4

Replace the F/TANKDR MiniFuse® #32.

Does the F/TANKDR MiniFuse® #32 immediately open when installed?

--

Go to Step 6

Go to Step 7

5

Repair the open in CKT 2840.

Is the repair complete?

--

Go to Hatch Release System Check

--

6

Repair a short to ground in CKT 2840.

Is the repair complete?

--

Go to Hatch Release System Check

--

7

Repair a short to ground in CKT 1576.

Is the repair complete?

--

Go to Hatch Release System Check

--

8
  1. Disconnect the Body Control Module (BCM) connector C2.
  2. Connect a DMM between connector C2 terminal D9 of the Body Control Module (BCM) and ground.
  3. Reconnect the rear compartment lid release switch connector.
  4. Press the rear compartment lid release switch button.
  5. Measure the available voltage at the Body Control Module (BCM) connector C2 terminal D9.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 12

Go to Step 9

9
  1. Disconnect the rear compartment lid release switch connector.
  2. Connect a DMM between terminal B and terminal D of the rear compartment lid/fuel tank filler door lock release switch.
  3. Depress the hatch release button and measure across the switch for continuity with the button depressed.

Is continuity present across the hatch release switch when the button is depressed?

--

Go to Step 10

Go to Step 11

10

Repair the open in CKT 1576.

Is the repair complete?

--

Go to Hatch Release System Check

--

11

Replace the rear compartment lid/fuel tank filler door lock release switch.

Refer to Rear Compartment Lid Switch Replacement

Is the repair complete?

--

Go to Hatch Release System Check

--

12
  1. Disconnect the Body Control Module (BCM) connector C1.
  2. Connect a fused jumper wire between the Body Control Module (BCM) connector C1 terminal B9 and ground.

With the fused jumper connected, does the rear hatch open?

--

Go to Step 13

Go to Step 14

13

Replace the Body Control Module (BCM) and reprogram as needed.

Refer to Body Control Module Replacement

Is the repair complete?

--

Go to Hatch Release System Check

--

14
  1. Remove the HTCHTRK REL Micro Relay #39 from the instrument panel electrical center.
  2. Connect a DMM between the Body Control Module (BCM) connector C1 terminal B9 and the CKT 1344 terminal inside the instrument panel electrical center which is used for the HTCHTRK REL Micro Relay #39.
  3. Measure CKT 1344 for continuity between the instrument panel electrical center CKT 1344 terminal and the Body Control Module (BCM) connector C1 terminal B9.

Is CKT 1344 continuous between these two terminals?

--

Go to Step 16

Go to Step 15

15

Repair the open in CKT 1344.

Is the repair complete?

--

Go to Hatch Release System Check

--

16

Connect a fused jumper wire between the BATTERY CKT terminal and the CKT 383 terminal inside the instrument panel electrical center which is used for the HTCHTRK REL Micro Relay #39.

With the fused jumper connected, does the rear hatch open?

--

Go to Step 17

Go to Step 18

17

Replace the HTCHTRK REL Micro Relay #39.

Is the repair complete?

--

Go to Hatch Release System Check

--

18

Check the HTCHTRK MiniFuse® #26 for an open circuit.

Is the fuse open?

--

Go to Step 19

Go to Step 26

19
  1. Open the rear hatch using the manual release system.
  2. Disconnect both RH/LH rear compartment lid lock release solenoids.
  3. Connect a fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  4. Replace the HTCHTRK MiniFuse® #26.

Does the HTCHTRK MiniFuse® #26 immediately open when installed?

--

Go to Step 20

Go to Step 21

20

Repair a short to ground in CKT 383.

Is the repair complete?

--

Go to Hatch Release System Check

--

21
  1. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal.
  2. Reconnect only the LH rear compartment lid lock release solenoid.
  3. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Does the HTCHTRK MiniFuse® #26 immediately open when the fused jumper wire is reinstalled?

--

Go to Step 22

Go to Step 23

22

Replace the LH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

23
  1. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal.
  2. Disconnect the LH rear compartment lid lock release solenoid.
  3. Reconnect only the RH rear compartment lid lock release solenoid.
  4. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Does the HTCHTRK MiniFuse® #26 immediately open when the fused jumper wire is reinstalled?

--

Go to Step 24

Go to Step 25

24

Replace the RH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

25

Carefully inspect the rear hatch lock release mechanisms for binding and repair.

Is the repair complete?

--

Go to Hatch Release System Check

--

26
  1. Connect the DMM between the LH rear compartment lid lock release solenoid terminal B and ground.
  2. Measure CKT 150 for continuity to ground.

Is CKT 150 continuous to G302?

--

Go to Step 28

Go to Step 27

27

Repair the open in CKT 150 between the LH rear compartment lid lock release solenoid connector and G302.

Is the repair complete?

--

Go to Hatch Release System Check

--

28
  1. Connect the DMM between the RH rear compartment lid lock release solenoid terminal B and ground.
  2. Measure CKT 150 for continuity to ground.

Is CKT 150 continuous to G302?

--

Go to Step 30

Go to Step 29

29

Repair the open in CKT 150 between the RH rear compartment lid lock release solenoid connector and G302.

Is the repair complete?

--

Go to Hatch Release System Check

--

30

Check the operation of each rear compartment lid lock release solenoid individually.

  1. Reconnect the LH rear compartment lid lock release solenoid.
  2. Connect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  3. Disconnect the LH rear compartment lid lock release solenoid.
  4. Disconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.
  5. Reconnect the RH rear compartment lid lock release solenoid.
  6. Reconnect the fused jumper wire between the instrument panel electrical center BATTERY CKT terminal and the CKT 383 terminal which is used for the HTCHTRK REL Micro Relay #39.

Do both of the rear compartment lid lock release solenoids operate properly when the fused jumper wire is installed?

--

Go to Step 32

Go to Step 31

31

Replace the LH or RH rear compartment lid lock release solenoid.

Is the repair complete?

--

Go to Hatch Release System Check

--

32

Repair the binding concern with the LH/RH rear compartment lid lock release solenoid mechanisms or replace weak rear hatch strut supports.

Is the repair complete?

--

Go to Hatch Release System Check

--