Underhood Bussed Electrical Center (UBEC) Details (Base Pickup)
No. | Fuse/Circuit Breaker | Rating | Description |
|---|---|---|---|
Maxi Fuses | |||
1 | INT BATT | 50A | HDLP SW, MIR/LKS, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses |
2 | ABS | 60A | Electronic Brake Control Module (EBCM) Assembly |
3-4 | -- | -- | Not Used |
5 | IGN B | 50A | Ignition Switch |
6 | RAP | 50A | Retained Accessory Power Relay |
7 | IGN A | 40A | Starter Relay and Ignition Switch |
8 | STUD #2 | 30A | Not Used |
Mini Fuses | |||
9-11 | -- | -- | Not Used |
12 | VEH B/U | 15A | Backup Lamps, Right and Left |
13 | RT TURN | 10A | Turn Signal Assembly, Right Front |
14 | LT TURN | 10A | Turn Signal Assembly, Left Front |
15 | LT TRN | 10A | Tail Lamp Assembly, Left Rear |
16 | RT TRN | 10A | Tail Lamp Assembly, Right Rear |
17 | RR PRK | 10A | License Lamp, Marker Lamp Assembly, and Tail Lamp Assembly (All Right Side) |
18 | FR PRK | 10A | Turn Signal Lamp Assembly and Tail Lamp Assembly (All Right Side) |
19 | -- | -- | Not Used |
20 | LT HDLP | 10A | Headlamp Low Beam, Left Side, and Daytime Running Lamp (DRL) Relay |
21 | RT HDLP | 10A | Headlamp Low Beam and Headlamp High Beam (All Right Side) |
22 | ENG 1 | 10A | Evaporative Emission Canister Purge Solenoid, Evaporative Emission Canister Vent Solenoid, Mass Air Flow Sensor (4.3L), and Camshaft Position Sensor (4.3L) |
23 | ECM B | 20A | Fuel Pump Relay, Powertrain Control Module (PCM) (2.2L), Vehicle Control Module (4.3L), and Fuel Pump and Engine Oil Pressure Gauge Sensor |
24 | HORN | 15A | Horn, Left and Right Side |
25 | ECM 1 | 15A | Electronic Ignition Control Module, Powertrain Control Module/Vehicle Control Module, Crankshaft Position Sensor, Fuel Injectors 1-6, and Ignition Coil |
26 | BTSI | 10A | Stop Lamp Switch Assembly and Transfer Case Control Module |
27 | B/U LP | 25A | Backup Lamps Switch/Transmission Range Switch |
28 | -- | -- | Not Used |
29 | IGN E | 10A | A/C Compressor Clutch Relay |
30 | FOG LP | 15A | Fog Lamp Relay and Headlamp Ground Relay |
31 | OXYSEN | 20A | Heated Oxygen Sensor, Post-Converter (2.2L), Heated Oxygen Sensor, Left Front, Heated Oxygen Sensor, Post-Converter, Heated Oxygen Sensor, Right Front, and Heated Oxygen Sensor, Pre-Converter |
32 | LR PRK | 10A | Tail Lamp Assembly, Left Side, Marker Lamp Assembly, Left Rear, and License Lamp, Left Side |
33 | IGN C | 20A | Ignition Switch |
34 | -- | -- | Not Used |
35 | PARK LP | 20A | Park Lamp Relay and Headlamp Switch Assembly |
36 | -- | -- | Not Used |
37 | -- | -- | Not Used |
38 | HVAC | 30A | Blower Motor Relay |
39-40 | -- | -- | Not Used |
41 | CRANK | 10A | Transfer Case Control Module, Manual Transmission Clutch Start Switch, and Transmission Range Switch (Automatic) |
42 | HAZ LP | 20A | Hazard Switch |
43 | VECHMSL | 10A | Dome and High Mounted Stop Lamp and Cruise Control Module |
44 | -- | -- | Not Used |
45 | STOP LP | 20A | High Mounted Stop Lamp Relay and Stop Lamp Switch |
46 | TBC | 10A | Truck Body Control Module (TBC) and RFA Module Assembly (Remote Keyless Entry) |
Micro Relays | |||
47 | HDLP PWR | -- | Power Supply to the Headlamps |
48 | DRL | -- | Power Supply to the Daytime Running Lamps (DRL) |
49 | F/Pump | -- | Power Supply to the Fuel Pump |
50 | Horn | -- | Power Supply to the Horns |
51 | -- | -- | Not Used |
52 | HDLP GRD | -- | Ground Supply to the Headlamps |
53 | -- | -- | Not Used |
54 | CHMSL | -- | Power Supply to the Rear Brake Lamps |
Mini Relays | |||
55 | Starter | -- | Power Supply to the Starter |
56 | -- | -- | Not Used |
Diode | |||
57 | DRL | -- | Prevent Feedback from the DRL Relay |
Underhood Bussed Electrical Center (UBEC) Details (Uplevel Pickup)
No. | Fuse/Circuit Breaker | Rating | Description |
|---|---|---|---|
Maxi Fuses | |||
1 | INT BATT | 50A | HDLP SW, MIR/LKS, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses |
2 | ABS | 60A | Electronic Brake Control Module (EBCM) Assembly |
3-4 | -- | -- | Not Used |
5 | IGN B | 50A | Ignition Switch |
6 | RAP | 50A | Retained Accessory Power Relay |
7 | IGN A | 40A | Starter Relay and Ignition Switch |
8 | STUD#2 | 30A | Not Used |
Mini Fuses | |||
9-11 | -- | -- | Not Used |
12 | VEH B/U | 15A | Backup Lamps, Right and Left |
13 | RT TURN | 10A | Turn Signal Assembly, Right Front |
14 | LT TURN | 10A | Turn Signal Assembly, Left Front |
15 | LT TRN | 10A | Tail Lamp Assembly, Left Rear |
16 | RT TRN | 10A | Tail Lamp Assembly, Right Rear |
17 | RR PRK | 10A | License Lamp, Marker Lamp Assembly, and Tail Lamp Assembly (All Right Side) |
18 | FR PRK | 10A | Turn Signal Lamp Assembly and Tail Lamp Assembly (All Right Side) |
19 | -- | -- | Not Used |
20 | LT HDLP | 10A | Headlamp Low Beam- Left, Headlamp High Beam-Left (ZR2 w/ Service Harness), and Daytime Running Lamp (DRL) Relay |
21 | RT HDLP | 10A | Right Headlamps |
22 | ENG 1 | 10A | Evaporative Emission Canister Purge Solenoid, Evaporative Emission Canister Vent Solenoid, Mass Air Flow Sensor (4.3L), and Camshaft Position Sensor (4.3L) |
23 | ECM B | 20A | Fuel Pump Relay, Powertrain Control Module (PCM) (2.2L), Vehicle Control Module (4.3L), and Fuel Pump and Engine Oil Pressure Gauge Sensor |
24 | HORN | 15A | Horn, Left and Right Side |
25 | ECM 1 | 15A | Electronic Ignition Control Module, Powertrain Control Module/Vehicle Control Module, Crankshaft Position Sensor, Fuel Injectors 1-6, and Ignition Coil |
26 | BTSI | 10A | Stop Lamp Switch Assembly and Transfer Case Control Module |
27 | B/U LP | 25A | Backup Lamps Switch/Transmission Range Switch |
28 | A/C | 10A | A/C Compressor Clutch Relay |
29 | IGN E | 10A | A/C Compressor Clutch Relay |
30 | FOG LP | 15A | Fog Lamp Relay and Headlamp Ground Relay |
31 | OXYSEN | 20A | Heated Oxygen Sensor, Post-Converter (2.2L), Heated Oxygen Sensor, Left Front, Heated Oxygen Sensor, Post-Converter, Heated Oxygen Sensor, Right Front, and Heated Oxygen Sensor, Pre-Converter |
32 | LR PRK | 10A | Tail Lamp Assembly, Left Side, Marker Lamp Assembly, Left Rear, and License Lamp, Left Side |
33 | IGN C | 20A | Ignition Switch |
34 | -- | -- | Not Used |
35 | PARK LP | 20A | Park Lamp Relay and Headlamp Switch Assembly |
36 | ATC | 20A | Transfer Case Control Module |
37 | -- | -- | Not Used |
38 | HVAC | 30A | Blower Motor Relay |
39-40 | -- | -- | Not Used |
41 | CRANK | 10A | Transfer Case Control Module, Manual Transmission Clutch Start Switch, and Transmission Range Switch (Automatic) |
42 | HAZ LP | 20A | Hazard Switch |
43 | VECHMSL | 10A | Dome and High Mounted Stop Lamp and Cruise Control Module |
44 | -- | -- | Not Used |
45 | STOP LP | 20A | High Mounted Stop Lamp Relay and Stop Lamp Switch |
46 | TBC | 10A | Truck Body Control Module (TBC) and RFA Module Assembly (Remote Keyless Entry) |
Micro Relays | |||
47 | HDLP PWR | -- | Power Supply to the Headlamps |
48 | DRL | -- | Power Supply to the Daytime Running Lamps (DRL) |
49 | F/Pump | -- | Power Supply to the Fuel Pump |
50 | Horn | -- | Power Supply to the Horns |
51 | A/C | -- | A/C Compressor Relay |
52 | HDLP GRD | -- | Ground Supply to the Headlamps |
53 | FOG LP | -- | Power Supply to the Fog Lamps |
54 | CHMSL | -- | Power Supply to the Rear Brake Lamps |
Mini Relays | |||
55 | Starter | -- | Power Supply to the Starter |
56 | -- | -- | Not Used |
Diode | |||
57 | DRL | -- | Prevent Feedback from the DRL Relay |
Underhood Bussed Electrical Center (UBEC) Details (Uplevel Utility)
No. | Fuse/Circuit Breaker | Rating | Description |
|---|---|---|---|
Maxi Fuses | |||
1 | INT BATT | 50A | HDLP SW, MIR/LKS, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses |
2 | ABS | 60A | Electronic Brake Control Module (EBCM) Assembly |
3-4 | -- | -- | Not Used |
5 | IGN B | 50A | Ignition Switch |
6 | RAP | 50A | Retained Accessory Power Relay |
7 | IGN A | 40A | Starter Relay and Ignition Switch |
8 | STUD#2 | 30A | AUX PWR Stud, UBEC |
Mini Fuses | |||
9 | TRL TRN | 10A | Turn Signal, Left Side Trailer |
10 | TRR TRN | 10A | Turn Signal, Right Side Trailer |
11 | TRL B/U | 10A | Backup Lamp, Trailer |
12 | VEH B/U | 15A | Backup Lamps, Right and Left |
13 | RT TURN | 10A | Turn Signal Assembly, Right Front |
14 | LT TURN | 10A | Turn Signal Assembly, Left Front |
15 | LT TRN | 10A | Tail Lamp Assembly, Left Rear |
16 | RT TRN | 10A | Tail Lamp Assembly, Right Rear |
17 | RR PRK | 10A | Tail Lamp Assembly, Right Side |
18 | FR PRK | 10A | Front Turn Signal Lamp Assembly, RH, LH |
19 | TRL PRK | 10A | Tail Lamp, Trailer, LH, RH, Vehicle Lisense Plate Lamps |
20 | LT HDLP | 10A | Headlamp Low Beam, Left Side, and Daytime Running Lamp (DRL) Relay |
21 | RT HDLP | 10A | Headlamp Low Beam and Headlamp High Beam (All Right Side) |
22 | ENG 1 | 10A | Evaporative Emission Canister Purge Solenoid, Evaporative Emission Canister Vent Solenoid, Mass Air Flow Sensor (4.3L), and Camshaft Position Sensor (4.3L) |
23 | ECM B | 20A | Fuel Pump Relay, Powertrain Control Module (PCM) (2.2L), Vehicle Control Module (4.3L), and Fuel Pump and Engine Oil Pressure Gauge Sensor |
24 | HORN | 15A | Horn, Left and Right Side |
25 | ECM 1 | 15A | Electronic Ignition Control Module, Powertrain Control Module/Vehicle Control Module, Crankshaft Position Sensor, Fuel Injectors 1-6, and Ignition Coil |
26 | BTSI | 10A | Stop Lamp Switch Assembly/BTSI Solenoid and Transfer Case Control Module |
27 | B/U LP | 25A | Backup Lamps Switch/Transmission Range Switch |
28 | A/C | 10A | A/C Compressor Clutch Relay |
29 | IGN E | 10A | A/C Compressor Clutch Relay |
30 | FOG LP | 15A | Fog Lamp Relay and Headlamp Ground Relay |
31 | OXYSEN | 20A | Heated Oxygen Sensor, Post-Converter (2.2L), Heated Oxygen Sensor, Left Front, Heated Oxygen Sensor, Post-Converter, Heated Oxygen Sensor, Right Front |
32 | LR PRK | 10A | Tail Lamp Assembly, Left Side, Marker Lamp Assembly, Left Rear, and License Lamp, Left Side |
33 | IGN C | 20A | Ignition Switch |
34 | HTD SEAT | 20A | Heated Seat Assembly |
35 | PARK LP | 20A | Park Lamp Relay and Headlamp Switch Assembly |
36 | ATC | 20A | Transfer Case Control Module |
37 | RRDEFOG | 30A | Rear Window Defogger |
38 | HVAC | 30A | Blower Motor Relay/Blower Motor |
39 | TRCHMSL | 10A | Trailer Wiring Provision |
40 | RR W/W | 15A | Rear Window Wiper |
41 | CRANK | 10A | Transfer Case Control Module, Manual Transmission Clutch Start Switch, and Transmission Range Switch (Automatic) |
42 | HAZ LP | 20A | Hazard Switch |
43 | VECHMSL | 10A | Dome and Mounted Stop Lamp and Cruise Control Module |
44 | HTDMIR | 10A | Heated Mirrors |
45 | STOP LP | 20A | Stop Lamp Switch, High Mounted Stop Lamp Relay |
46 | TBC | 10A | Truck Body Control Module (TBC) and RFA Module Assembly (Remote Keyless Entry) |
Micro Relays | |||
47 | HDLP PWR | -- | Power Supply to the Headlamps |
48 | DRL | -- | Power Supply to the Daytime Running Lamps (DRL) |
49 | F/Pump | -- | Power Supply to the Fuel Pump |
50 | Horn | -- | Power Supply to the Horns |
51 | A/C | -- | A/C Compressor Relay |
52 | HDLP GRD | -- | Ground Supply to the Headlamps |
53 | FOG LP | -- | Power Supply to the Fog Lamps |
54 | -- | -- | Not Used |
Mini Relays | |||
55 | Starter | -- | Power Supply to the Starter |
56 | RR DEFOG | -- | Power Supply to the Rear Defog |
Diode | |||
57 | DRL | -- | Prevent Feedback from the DRL Relay |
Underhood Bussed Electrical Center (UBEC) Details (Envoy)
No. | Fuse/Circuit Breaker | Rating | Description |
|---|---|---|---|
Maxi Fuses | |||
1 | INT BATT | 60A | HDLP SW, MIR/LKS, AUX PWR, RDO BATT, CIGAR LTR, CTSY LP, and PWR LKS Fuses |
2 | ABS | 60A | Electronic Brake Control Module (EBCM) Assembly |
3-4 | -- | -- | Not Used |
5 | IGN B | 50A | Ignition Switch |
6 | RAP | 50A | Retained Accessory Power Relay |
7 | IGN A | 40A | Starter Relay and Ignition Switch |
8 | STUD | 30A | Not Used |
Mini Fuses | |||
9 | TRL TRN | 10A | Turn Signal, Left Side Trailer |
10 | TRR TRN | 10A | Turn Signal, Right Side Trailer |
11 | TRL B/U | 10A | Backup Lamp, Trailer |
12 | VEH B/U | 15A | Backup Lamps, Right and Left |
13 | RT TURN | 10A | Turn Signal Assembly, Right Front |
14 | LT TURN | 10A | Turn Signal Assembly, Left Front |
15 | LT TRN | 10A | Tail Lamp Assembly, Left Rear |
16 | RT TRN | 10A | Tail Lamp Assembly, Right Rear |
17 | RR PRK | 10A | License Lamp, Marker Lamp Assembly, and Tail Lamp Assembly (All Right Side) |
18 | FR PRK | 10A | Turn Signal Lamp Assembly and Tail Lamp Assembly (All Right Side) |
19 | TRL PRK | 10A | Tail Lamp, Trailer |
20 | LT HDLP | 10A | Headlamp Low Beam, Left Side, and Daytime Running Lamp (DRL) Relay |
21 | RT HDLP | 10A | Headlamp Low Beam and Headlamp High Beam (All Right Side) |
22 | ENG 1 | 10A | Evaporative Emission Canister Purge Solenoid, Evaporative Emission Canister Vent Solenoid, Mass Air Flow Sensor (4.3L), and Camshaft Position Sensor (4.3L) |
23 | ECM B | 20A | Fuel Pump Relay, Powertrain Control Module (PCM) (2.2L), Vehicle Control Module (4.3L), and Fuel Pump and Engine Oil Pressure Gauge Sensor |
24 | LT HI | 15A | Left Hi Beam |
25 | RT HI | 15A | Right Hi Beam |
26 | HORN | 10A | Horn, Left and Right Side |
27 | ECM 1 | 15A | Electronic Ignition Control Module, Powertrain Control Module/Vehicle Control Module, Crankshaft Position Sensor, Fuel Injectors 1-6, and Ignition Coil |
28 | DRL | 15A | Daytime Running Lamps |
29 | BTSI | 10A | Stop Lamp Switch Assembly and Transfer Case Control Module |
30 | B/U LP | 25A | Backup Lamps Switch/Transmission Range Switch |
31 | A/C | 10A | A/C Compressor Clutch Relay |
32 | IGN E | 10A | A/C Compressor Clutch Relay |
33 | FOG LP | 15A | Fog Lamp Relay and Headlamp Ground Relay |
34 | OXYGEN | 20A | Heated Oxygen Sensor, Post-Converter (2.2L), Heated Oxygen Sensor, Left Front, Heated Oxygen Sensor, Post-Converter, Heated Oxygen Sensor, Right Front, and Heated Oxygen Sensor, Pre-Converter |
35 | LR PRK | 10A | Tail Lamp Assembly, Left Side, Marker Lamp Assembly, Left Rear, and License Lamp, Left Side |
36 | IGN C | 20A | Ignition Switch |
37 | HTD SEAT | 20A | Heated Seat Assembly |
38 | PARK LP | 20A | Park Lamp Relay and Headlamp Switch Assembly |
39 | ATC | 20A | Transfer Case Control Module |
40 | RRDEFOG | 30A | Rear Window Defogger |
41 | HVAC | 30A | Blower Motor Relay |
42 | TRCHMSL | 10A | Blunt Cut Wire |
43 | RR W/W | 15A | Rear Window Wiper |
44 | CRANK | 10A | Transfer Case Control Module, Manual Transmission Clutch Start Switch, and Transmission Range Switch (Automatic) |
45 | LD LEV | 25A | Load Leveling |
46 | HI BEAM | 20A | HID Headlamps |
47 | HAZ LP | 20A | Hazard Switch |
48 | VECHMSL | 10A | Dome and High Mounted Stop Lamp and Cruise Control Module |
49 | HTDMIR | 10A | Heated Mirrors |
50 | STOP LP | 20A | High Mounted Stop Lamp Relay and Stop Lamp Switch |
51 | TBC | 10A | Truck Body Control Module (TBC) and RFA Module Assembly (Remote Keyless Entry) |
Micro Relays | |||
52 | DRL | -- | Power Supply to the Daytime Running Lamps (DRL) |
53 | F/Pump | -- | Power Supply to the Fuel Pump |
54 | Horn | -- | Power Supply to the Horns |
55 | A/C | -- | A/C Compressor Relay |
56 | FOG LP | -- | Power Supply to the Fog Lamps |
Mini Relays | |||
57 | LOW BEAM | -- | Power Supply to the Low Beam Headlamps |
58 | STARTER | -- | Power Supply to the Starter |
59 | RR DEFOG | -- | Power Supply to the Rear Defog |
IP Fuse Block Details
Fuse No. | Fuse/Circuit Breaker | Rating | Description |
|---|---|---|---|
-- | Power Windows/Circuit Breaker A | 30A | Door Lock and Side Window Switch Assembly, Left and Right Side |
1 | HDLP SW | 10A | Headlamp Switch |
2 | CIGAR LTR | 15A | Cigar Lighter and Data Link Connector |
3 | CRUISE | 10A | Truck Body Control Module (TBC), Cruise Control Module and Cruise Control Switch |
4 | GAUGES | 10A | Truck Body Control Module (TBC) and Instrument Cluster |
5 | ILLUM | 10A | Radio, Heater Controller (Non-A/C), Heater and A/C Controller (w/ A/C), Fog Lamp Switch, IP Module Switch, Truck Body Control Module (TBC), Transfer Case Select Switch, and Instrument Cluster |
6 | -- | -- | Not Used |
7 | MIR/LKS | 5A | Outside Rear View Mirror Switch and Door Lock and Side Window Switch Assembly, Left and Right Side |
8 | CTSY LP | 10A | Console Courtesy Lamp, Left and Right Side, Transfer Case Control Module and Inadvertent Power Lamp Relay |
9 | HVAC | 20A | Heater Controller (Non-A/C) and Heater and A/C Controller (w/ A/C) |
10 | TURN | 20A | Hazard Lamp Switch and Turn Signal Switch |
11 | CLSTR | 10A | Instrument Cluster, Powertrain Control Module (2.2L), Vehicle Control Module (4.3L), and Automatic Transmission |
12 | PARK LPS | 10A | IP Ashtray Lamp, Truck Body Control Module (TBC), Outside Rear View Mirror Switch, and Door Lock and Side Window Switch Assembly, Left and Right Side |
13 | AUX PWR | 20A | Auxiliary Power Outlet, Left and Right Side |
14 | PWR LKS | 15A | Door Lock Relay, Door Unlock Relay, and Driver Door Lock Relay |
15 | 4WD | 10A | Vehicle Control Module, Transfer Case Select Switch, Transfer Case Control Module, and Front Axle Switch |
16 | SIR | 15A | IP Module Switch and Supplemental Restraint Sensing and Diagnostic Module |
17 | FRT WPR | 25A | Windshield Wiper Motor and Windshield Wiper/Washer Control Switch |
18 | -- | -- | Not Used |
19 | RDO BATT | 15A | Radio and Instrument Cluster |
20 | AMP F (Envoy Only) | 25A | Amplifier |
21 | HVAC1 | 10A | Air Temperature Valve and Air Temperature Valve Electric Actuator |
22 | ABS | 10A | Stop Lamp Switch and Electronic Brake Control Module Assembly |
23 | RR WPR | 15A | Rear Wiper Switch, Rear Window Washer Motor |
24 | RDO IGN | 10A | Radio |
