What is a t/g rel on a fuse box - 1994 Chevrolet K1500

Voltage is applied at all times through the TRUNK REL/RFA fuse to the rear compartment lid release switch and the switch side of the rear compartment lid release relay. When the release switch is pressed, the following actions occur:
• The switch closes.
• Voltage is applied to the coil side of the rear compartment lid release relay.
When the transaxle is in PARK or NEUTRAL, the rear compartment lid release relay is grounded through the transaxle range switch. With the coil side of the relay energized, the relay contacts close, applying voltage to the rear compartment lid release motor.
If the vehicle is equipped with remote entry, the switch operation is the same, except when the contacts in the rear compartment lid release relay close, voltage is applied through the normally closed contacts of the remote control door lock receiver. This action occurs in order to apply voltage to the rear compartment lid release motor.

Can you check fuse's , relay ? Both are located in the left insturment panel fuse box . Fuse Block - Left I/P
On the left side of the I/P
you need to open the drivers door to get to it ,on very end of the insturment panel .
Do you know anything about relay's , how they work ? If you pull the relay out of the fuse box an look on the bottom you will see four set's of numbers . 30 & 87 . if you took a piece of wire an jumped were this pins plug into the fuse box the trunk would open . provided there is B+ voltage at pin 30 .
There are videos on youtube showing how to test relays and their circuits .

trunk fuse will be R / CMPT REL. look under hood passenger side fuse box.

Center counsel fuse block, BCM D fuse and GATE REL fuse. The locks are powered and grounded by the BCM. there is not a specific fuse for them.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The fuse if its open is located in the left side of the instrument panel juction fuse box it is a 10 amp fuse listed as Trunk Rel,Rfa,

Sound like you missing a ground somewhere,Only in park,The park signal is in the instrument cluster,The goes to the BCM, go to the engine juction fuse box check fuses listed as GATE REL this is 20 amps,then check IPMDL fuse this is10 amps. , Then check the BCM D fuse this is the 25 amp fuse it is located in the center console or the floor, If every thing is good you can try a reflash of the BCM.

Woohoo Just Found The Answer. Its in the fuse box located under the headlamp switch labeled "T/G REL" and it's a 25 amp fuse!

In the engine copartment there is a fuse/relay box. Check the rel;ay for power door locks, It should click when you push the door lock remorte button or the door switch. If it doesnt replace that relay. If it does click then the issue could be with the computer in which it would need to be whats called "flash programming". This is basically a software update much like when you computer does all that software update stuff itself. For the flash update that will need to be done at the dealership.

FUSE USAGE

1. 10 AMP LOW BEAM-LEFT
2. 10 AMP LOW BEAM-RIGHT
3. 30 AMP BRKR POWER WDO/SUNROOF
4. 30 AMP BRKR PWR ACSRY
5. 20 AMP BRKR LIGHNG CONTROL MODULE
6. 15 AMP IGN/REM ACSRY CONT/INST CSTR
7. 10 AMP SUPPLEMENTAL INFLATABLE RST
8. 20 AMP CORNERING LPS/TURN SIG
9. 10 AMP CRANK SIGNAL-SIR
10. 20 AMP TRK REL/FUEL FILL REL/BACK-UP LPS
11. 15 AMP BAT/RADIO/PWR ANT/CIG LGTR/ INST CSTR
12. 20 AMP ELECTRONIC LEVEL CONTROL
13. 20 AMP BRAKE & HAZARD LAMPS
14. 15 AMP PARK LAMPS
15. 15 AMP COURTESY LPS/PWR MIRRORS
16. 10 AMP COOLING FAN
17. 25 AMP HEATING/AIR CONDITIONING (C67)
18. 15 AMP A/C AUTOMATIC ELECTRONIC (CJ2)
19. 10 AMP ANTILOCK BRAKES
20. 10 AMP LOW COOLANT/LAMP MONITOR
21. 10 AMP IP LIGHTS
22. 10 AMP HI BEAM-RIGHT
23. 10 AMP HI BEAM-LEFT
24 10 AMP IGNITION/RADIO
25 25 AMP WIPER/WASHER

FOR ACCESS TO ADDITIONAL FUSES
REMOVE RIHT SOUND INSULATOR

Your fuse panel is located by the emergency brake.Depress the two tabs and the fuse box will swing down, the panel diagram is written on the panel door.