Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 635 (WIRING SYSTEMS (COMPONENT LOCATOR))COMPONENT LOCATORELECTRICAL CENTER IDENTIFICATION VIEWSFUSE BLOCK - UNDERHOOD, LABEL
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Fuse Block - Underhood, Label
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Fuse Block - Underhood, Label
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Fuse Block Identification View - Underhood, Label Usage
| No. | Device | Rating | Description |
|---|---|---|---|
| 1 | FUEL PUMP | 15A | FUEL PUMP Relay 50 |
| 2 | A/C CLU | 10A | A/C CLU Relay 51 |
| 3 | HOG | 15A | HOG Relay 49 |
| 4 | ENG CONTROLS (LA1) | 10A |
|
| 4 | ABS (LY7) | 10A | Electronic brake control module (EBCM) |
| 5 | PCM (LA1) | 10A | Powertrain control module (PCM) |
| 5 | ECM (LY7) | 10A | Engine control module (ECM) |
| 6 | ABS (LA1) | 10A | Electronic brake control module (EBCM) |
| 6 | PT RLY (LY7) | 15A | Powertrain Relay |
| 7 | TRANS SOL (LA1) | 10A | Automatic transaxle |
| 7 | PT SENSORS (LY7) | 15A |
|
| 8 | TCM (LY7) | 10A | Transmission control module |
| 9 | ABS SOL | 25A | Electronic brake control module (EBCM) |
| 10 | O2 SENSORS (LA1) | 15A |
|
| 10 | O2/MAF SENS | 15A | Heated oxygen sensor 1 (HO2S1) |
| 11 | FUEL INJ (LA1) | 15A | Fuel injectors |
| 11 | INJ EVEN (LY7) | 15A | Fuel injectors - Bank 2 |
| 12 | - | - | Not Used |
| 13 | ELEC ENG (LA1) | 15A | Ignition control module (ICM) |
| 13 | INJ ODD (LY7) | 15A | Fuel injectors - Bank 1 |
| 14 | DRL | 10A | Headlamp, RH (high beam) |
| 15 | LO BEAM-RT | 10A | Headlamp, RH (low beam) |
| 16 | TRANS (LY7) | 10A |
|
| 17 | LO BEAM-L- | 10A | Headlamp, LH (low beam) |
| 18 | HI BEAM-L- | 10A | Headlamp, LH (high beam) |
| 19 | IGN 3/ IGN 1 | 20A | Ignition switch |
| 20 | PRK LPS | 15A | PRK LPS Relay 55 |
| 21 | ECM IGN 1 | 15A | Engine Control Module |
| 22 | - | - | Not Used |
| 23 | HI BEAM-RT | 10A | Headlamp, RH (high beam) |
| 24 | VENT SOL | 10A | Evaporative emission (EVAP) canister solenoid |
| 25 | DVD | 15A | DVD System |
| 26 | FOG LPS | 10A | FOG LPS Relay |
| 27 | IGN1 MAIN | 10A |
|
| 28 | BCM | 10A | Body control module (BCM) |
| 29 | S BAND | 2A | Digital radio receiver |
| 30 | AWD | 15A | Differential clutch pump actuator check valve |
| 31 | CRUISE | 10A |
|
| 32 | FRT AUX | 20A |
|
| 33 | BTSI | 2A |
|
| 34 | STRTR SOL | 40A | Starter soleniod |
| 35 | ABSMTR | 40A | Electronic brake control module (EBCM) |
| 36-37 | - | - | Not Used |
| 38 | COOL FAN2 | 30A |
|
| 39 | COOL FAN1 | 30A | COOL FAN1 Relay 61 |
| 40 | IGN 1 | 60A |
|
| 41 | BATT 3 | 60A | REAR DEFOG Relay |
| 42-43 | - | - | Not Used |
| 44 | BATT 2 | 60A |
|
| 45 | - | - | Not Used |
| 46 | IGN 3 | 40A |
|
| 47 | BATT 1 | 60A |
|
| 48 | - | - | Not Used |
| 49 | HOG Relay | - | Horns |
| 50 | FUEL PUMP Relay | - | Fuel pump |
| 51 | A/C CLU Relay | - | A/C compressor clutch |
| 52 | DRL Relay | - |
|
| 53 | HDLP LO-BEAM Relay | - |
|
| 54 | PARK LPS Relay | - | Exterior lighting |
| 55 | HDLP HI-BEAM Relay | - |
|
| 56 | FOG LPS Relay | - | Fog lamps |
| 57 | CRANK Relay | - | Starter motor |
| 58 | COOL FAN2 Relay | - | Cooling fan - Right |
| 59 | IGNITION Relay (LA1) | - | Fuses:
Relays: A/C CLU Relay 51 |
| 59 | PTRAIN Relay (LY7) | - | Fuses:
Relays: A/C CLU Relay 51 |
| 60 | COOL FAN2 Relay | - | Cooling fans |
| 61 | COOL FAN1 Relay | - | Cooling fan - Left |
| 62 | IGNITION Relay (LY7) | - | Fuses:
|
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.