Automatic Transmission
AW-1 Automatic Transmission Fluid (GM Part No. 19256039, in Canada 19256040).
Applies to: Automatic Transmission
Owner’s manual specs
2018 Buick LaCrosse Specs: Oil Capacity, Fluids, Maintenance Schedule & Fuse Box
Figures for the 2018 Buick LaCrosse, copied from Buick’s own owner’s manual. Every one links to the manual page it came from.
From the manufacturer’s manuals. Every figure here is copied from the manufacturer's own manual, with a link to the page it came from. Where a manual is unclear or contradicts itself, we leave the figure out.
Engines in this manual: 2.5L L4, 3.6L V6. Figures that differ by engine say which engine they are for.
Fluids & capacities
All engines
Engine Coolant
50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System 0 239.
Applies to: Engine Coolant
Engine Cooling System
9.5 qt
9 L
Engine Oil
Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 is recommended. See Engine Oil 0 234.
Applies to: Engine Oil
2.5L L4
Engine Oil with Filter
5 qt
4.7 L
Applies to: 2.5L L4 Engine · with filter
3.6L V6
Engine Oil with Filter
6 qt
5.7 L
Applies to: 3.6L V6 Engine · with filter
Maintenance schedule
Normal service schedule
Use this for ordinary driving.
| Service | When |
|---|---|
| Replace engine air cleaner filter. (3) | Every 45,000 mi(72,000 km) |
| Replace passenger compartment air filter. (1) | Every 22,500 mi(36,000 km) |
| Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. | Every 7,500 mi(12,000 km) |
Severe service schedule
Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.
| Service | When |
|---|---|
| Replace engine air cleaner filter. (3) | Every 45,000 mi(72,000 km) |
| Replace passenger compartment air filter. (1) | Every 22,500 mi(36,000 km) |
| Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. | Every 7,500 mi(12,000 km) |
Oil life & reset procedures
Engine oil life system reset
Before you start
- Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change.
Steps
- Using the DIC controls on the right side of the steering wheel, display REMAINING OIL LIFE on the DIC. See Driver Information Center (DIC) 0 126. When remaining oil life is low, the CHANGE ENGINE OIL SOON message will appear on the display.
- Press V on the DIC controls and hold down for a few seconds to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%.
You’ll know it worked: The system is reset when the CHANGE ENGINE OIL SOON message is off.
Fuse box locations & fuse chart
Engine Compartment Fuse Block
What each fuse protects
| Fuse | Amps | Protects | Source |
|---|---|---|---|
| 3 | — | ABS pump | p.255 |
| 4 | — | AC DC inverter | p.256 |
| 5 | — | AC DC inverter | p.255 |
| 6 | — | Rear closure | p.255 |
| 7 | — | Left corner lamp | p.255 |
| 8 | — | Power windows/ Rearview mirror/ Power seats | p.255 |
| 9 | — | Engine boost | p.255 |
| 10 | — | Airbag sensing diagnostic module/ Passenger sensing module -eAssist | p.255 |
| 11 | — | DC DC Battery 1 | p.255 |
| 12 | — | Rear window defogger | p.255 |
| 13 | — | Heated mirrors | p.255 |
| 15 | — | Passive entry/ Passive start | p.255 |
| 16 | — | Front wipers | p.255 |
| 17 | — | Passenger power seat | p.255 |
| 18 | — | ABS valve | p.255 |
| 19 | — | Driver power seat | p.255 |
| 20 | — | Rear defogger | p.256 |
| 21 | — | Sunroof | p.255 |
| 22 | — | Right corner lamp | p.255 |
| 23 | — | Auto headlamp leveling | p.255 |
| 26 | — | Transmission control module/Ignition | p.255 |
| 27 | — | Instrument panel/ Ignition | p.255 |
| 28 | — | Electronic precision shift/Ignition | p.255 |
| 29 | — | Rear vision camera/ Ventilation | p.255 |
| 32 | — | Canister vent solenoid | p.255 |
| 33 | — | Front heated seats | p.255 |
| 34 | — | BSM (eAssist)/Fan control module/ Damping control module (SADS) | p.255 |
| 35 | — | Fog lamps | p.255 |
| 36 | — | Fuel module | p.255 |
| 37 | — | Front wiper speed | p.257 |
| 40 | — | Steering columnn lock | p.255 |
| 42 | — | Transmission auxiliary pump | p.257 |
| 43 | — | Heated steering wheel | p.255 |
| 44 | — | Headlamp leveling/ Rear seat ventilation | p.255 |
| 46 | — | Engine control module/Ignition | p.255 |
| 48 | — | Engine boost/Left cooling fan | p.256 |
| 49 | — | DC DC battery 2/AWD | p.256 |
| 57 | — | Transmission auxiliary pump | p.256 |
| 58 | — | TRCM | p.256 |
| 59 | — | High-beam headlamps | p.256 |
| 60 | — | Cooling fan | p.256 |
| 64 | — | A/C control | p.257 |
| 66 | — | Powertrain | p.257 |
| 69 | — | Right HID low-beam headlamps | p.256 |
| 70 | — | Left HID low-beam headlamps | p.256 |
| 71 | — | HID low-beam headlamps | p.257 |
| 72 | — | Starter pinion | p.256 |
| 73 | — | Starter motor | p.257 |
| 74 | — | Starter motor | p.256 |
| 75 | — | Engine control module | p.256 |
| 76 | — | Powertrain - off engine | p.256 |
| 78 | — | Horn | p.256 |
| 79 | — | Washer pump | p.256 |
| 80 | — | Starter pinion | p.257 |
| 81 | — | Transmission control module/ Engine control module | p.256 |
| 83 | — | Ignition coils | p.256 |
| 85 | — | Engine control module switch 2 | p.256 |
| 86 | — | Engine control module switch 1 | p.256 |
| 87 | — | SAI reaction pump | p.256 |
| 88 | — | Aeroshutter | p.256 |
| 89 | — | Headlamp washer | p.256 |
| 90 | — | SAI reaction solenoid | p.257 |
| 92 | — | TPIM motor generator unit pump | p.256 |
| 93 | — | Headlamp leveling | p.256 |
| 94 | — | Headlamp washer | p.257 |
| 95 | — | SAI reaction solenoid | p.256 |
| 96 | — | Fuel heater | p.256 |
| 98 | — | SAI reaction pump | p.257 |
| 99 | — | Coolant pump | p.256 |
Instrument Panel Fuse Block
Where to find it
Instrument Panel Fuse Block The instrument panel fuse block is in the instrument panel, on the driver side of the vehicle.
open the fuse panel by pulling down at the top.
More fuse pages in the manual
Diagrams and printed legends we can’t host. Check the box name printed on a diagram before counting positions.