The Chevrolet Tahoe and GMC Yukon, produced between 1995 and 1999, are early models of two of the most popular full-size SUVs in the market. These vehicles are known for their powerful performance, rugged build, and ability to handle both urban and off-road conditions with ease. Central to their functionality is a well-maintained electrical system, which depends on the fuse box and relays to keep everything running smoothly.
The fuse box in the 1995-1999 Chevrolet Tahoe and GMC Yukon is vital for protecting the vehicle’s electrical circuits. Typically, these SUVs have two main fuse boxes: one located in the engine compartment and another inside the cabin, usually under the dashboard on the driver’s side. The engine compartment fuse box handles high-power systems such as the engine, transmission, and cooling fans, while the interior fuse box manages lower-power systems like the lighting, radio, and power windows. Each fuse is designed to blow if there’s an overload, preventing damage to the associated system.
Relays in these vehicles act as switches for high-current systems, such as the starter motor, fuel pump, and air conditioning. These relays allow these powerful systems to be operated by smaller, low-current circuits, preventing the vehicle’s wiring and switches from being overloaded. For instance, a faulty relay could prevent the engine from starting or cause the cooling fan to fail, leading to potential overheating issues.
Regular inspection of the fuse box and relays is essential for the ongoing reliability of the Chevrolet Tahoe and GMC Yukon. Addressing any issues with blown fuses or faulty relays promptly can prevent more significant problems, ensuring these SUVs continue to deliver reliable performance on all types of terrain.
MUST READ: DYI – How to Check Car Fuses?
(1995-1999) Chevrolet Tahoe and GMC Yukon fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Tahoe and GMC Yukon 1995-1999 fuse assignment
- Cigar lighter (power outlet) fuses in the Chevrolet Tahoe are the fuses №. 7 “AUX PWR” (Aux Power Outlet) and №. 13 “CIG LTR” (Cigarette Lighter) in the Instrument panel fuse box.
Year of production: from 1995, 1996, 1997, 1998, 1999
Instrument Panel Fuse Box
Fuse box location
It is located on the driver’s side of the instrument panel, behind the cover.
Fuse box diagram
Assignment of the fuses in the Instrument Panel
| № | Name | Circuit protected |
|---|---|---|
| 1 | STOP/HAZ | Stop/TCC Switch, Buzzer, CHMSL, Hazard Lamps, Stop Lamps |
| 2 | T CASE | Transfer Case |
| 3 | CTSY | Courtesy Lamps, Cargo Lamp, Glove Box Lamp, Dome/Reading Lamps, Vanity Mirrors, Power Mirrors |
| 4 | GAGES | 1995: IP Cluster, DRL Relay, HDLP Switch, Keyless Entry, Low Coolant Module 1996-1999: Instrument Cluster, DRL Relay, Lamp Switch, Keyless Entry, Low Coolant Module, Illuminated Entry Module, DRAC (Diesel Engine) |
| 5 | RR WAC | RR HVAC Controls |
| 6 | CRUISE | Cruise Control |
| 7 | AUX PWR | Aux Power Outlet |
| 8 | CRANK | 1995: Diesel Fuel Pump, DERM, ECM 1996-1997: AirBag System 1999: Crank |
| 9 | PARK LPS | 1995: Lic Lamp, Park Lamp, Tail Lamp, Roof Marker Lamp, Tdi1 Gate Lamps, Front Side Markers, Door Switch Illum, Fender Lamp 1996-1999: License Lamp, Parking Lamps, Taillamps, Roof Marker Lamps, Tailgate Lamps, Front Sidemarkers, Fog Lamp Relay, Door Switch Illumination, Fender Lamps, Headlamp Switch Illumination |
| 10 | AIR BAG | 1995: DERM 1996-1999: Air Bag System |
| 11 | WIPER | Wiper Motor, Washer Pump |
| 12 | HTR-A/C | A/C, A/C Blower, High Blower Relay |
| 13 | CIG LTR | Power Amp, Rear Liftglass, Cigarette Lighter, Door Lock Relay, Power Lumbar Seat |
| 14 | ILLUM | 1995: 4WD, Indicator, LP Cluster, HVAC Controls, RR HVAC Controls, IP Switches, Radio Illumination 1996-1999: 4WD Indicator, Cluster, Front and Rear Comfort Controls, Instrument Switches, Radio Illumination, Chime Module |
| 15 | DRL-FOG | DRL Relay, Fog Lamp Relay |
| 16 | TURN-B/U | Front and Rear Turn Signals, Back-up Lamps, BTSI Solenoid |
| 17 | RADIO | Radio (Ignition) |
| 18 | BRAKE | 1995: DRAC, 4WAL PCM. ABS, Cruise 1996-1999: 4WAL/VCM, ABS, Cruise Control |
| 19 | RADIO BATT | Radio (Battery) |
| 20 | TRANS | 1995: PRNDL, Auto Transmission, Speedo, Check Gages Tell Tale 1996-1999: PRNDL, Automatic Transmission, Speedometer, Check Gages, Warning Lights |
| 21 | 1995-1996: Not Used 1997-1999: Variable Effort Steering / Security/Steering | |
| 22 | Not Used | |
| 23 | RR Wiper | Rear Wiper, Rear Wash Pump |
| 24 | 4WD | 1995: Frt Axle, 4WD Indicator Lamp 1996-1999: Front Axle, 4WD Indicator Lamp, TP2 Relay (Gasoline Engine) |
| A (Circuit Breaker) | PWR ACCY | Pwr Door Lock, 6-Way Pwr Seat, Keyless Entry Module |
| B (Circuit Breaker) | PWR WDOS | Power Windows |
Engine Compartment Fuse Box
Fuse box location
It is located in the engine compartment on the driver’s side.
Fuse box diagram
Assignment of the fuses and relay in the Engine Compartment (1997-1999)
| Name | Circuit protected |
|---|---|
| ECM-B | Fuel Pump, PCM/VCM |
| RR DEFOG | Rear Window Defogger (If Equipped) |
| IGN-E | Auxiliary Fan Relay Coil, A/C Compressor Relay, Hot Fuel Module |
| FUEL SOL | Fuel Solenoid (Diesel Engine) |
| GLOW PLUG | Glow plugs (Diesel Engine) |
| HORN | Horn, Underhood Lamps |
| AUX FAN | Auxiliary Fan |
| ECM-1 | Injectors, PCM/VCM |
| HTD ST-FR | Heated Front Seats |
| A/C | Air Conditioning |
| HTD MIR | Heated Outside Mirrors (If Equipped) |
| ENG-1 | Ignition Switch, EGR, Canister Purge, EVRV Idle Coast Solenoid, Heated O2, Fuel Heater (Diesel Engine), Water Sensor (Diesel Engine) |
| HTD ST-RR | Not Used |
| LIGHTING | Headlamp and Panel Dimmer Switch, Fog and Courtesy Fuses |
| BATT | Battery, Fuse Block Busbar |
| IGN-A | Ignition Switch |
| IGN-B | Ignition Switch |
| ABS | Anti-Lock Brake Module |
| BLOWER | Hi Blower and Rear Blower Relays |
| STOP/HAZ | Stoplamps |
| HEATED SEATS | Heated Seats (If Equipped) |
Conclusion
For owners and enthusiasts of classic Chevrolet Tahoe and GMC Yukon 1995-1999, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Chevrolet’s craftsmanship and innovation in the automotive industry during that era.
