The service and repair manual for the 2018 Buick LaCrosse — 3.6L V6 and 2.5L I4 engines, 5 trims. Matched to this exact model year, so the specifications and sequences are the ones Buick published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2018 |
|---|---|
| Engines | 3.6L V6 — DOHC 2.5L I4 — DOHC |
| Trims | Premium Sedan 4-Door · Base Sedan 4-Door · Preferred Sedan 4-Door · Essence Sedan 4-Door · Avenir Sedan 4-Door |
| Federal record | 2 recalls · 19 complaints · 597 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2018 LaCrosse manual
03 / ContentsSections in the manual
- Quick Lookups 732
- General Information 2,056
- Accessories & Equipment 7,332
- Heating, Ventilation & A/C (HVAC) 325
- Body & Frame 2,127
- Hybrid/Electric Powertrain 916
- Brakes 989
- Drivelines & Axles 172
- Restraints 413
- Electrical 4,387
- Steering 360
- Engine Mechanical 921
- Suspension 346
- Engine Performance 3,027
- Transmission 1,057
- First Pass - 111
- Second Pass - Loosen 45
- Final Pass - 199
04 / Known issuesRecalls on federal record for the 2018 LaCrosse
- Service Brakes, Hydraulic — foundation components › disc › caliper · 18V576000A reduction of braking performance can increase the risk of a crash.
- Power Train — automatic transmission · 20V668000Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may p.
Owners have filed 19 complaints and Buick has issued 597 technical service bulletins for the 2018 LaCrosse. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2018 LaCrosse manual
Is this manual specific to the 2018 LaCrosse?
Yes. It is the OEM manual matched to the 2018 model year, covering the 3.6L V6 and 2.5L I4 across the Premium Sedan 4-Door, Base Sedan 4-Door, Preferred Sedan 4-Door, Essence Sedan 4-Door, Avenir Sedan 4-Door trims. Specifications and procedure sequences are the ones Buick published for this year.
What 2018 LaCrosse problems does it help with?
2 recalls are on federal record for the 2018 LaCrosse, covering service brakes, hydraulic, power train. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Buick dealers.
Does it include 2018 LaCrosse wiring diagrams?
Yes — the complete wiring diagrams for the 2018 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $49.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther LaCrosse years and 2018 Buick models
2019 LaCrosse · 2017 LaCrosse · 2016 LaCrosse · 2015 LaCrosse · 2014 LaCrosse · 2013 LaCrosse · 2012 LaCrosse · all 15 years
2018 Buick Cascada · 2018 Buick Enclave · 2018 Buick Enclave Avenir · 2018 Buick Encore · 2018 Buick Envision · 2018 Buick Regal Sportback · 2018 Buick Regal TourX · every 2018 model