My 2017 Buick LaCrosse Premium AWD experienced a sudden, dangerous mechanical failure of the Accelerator Pedal Position Sensor system while operating the vehicle under normal road conditions. The vehicle suffered an immediate loss of engine continuity and engine power, forcing the car into a hazardous low-speed limp mode while in active traffic. A certified repair facility inspected the vehicle, confirmed a complete failure of the internal pedal sensor circuit, and replaced the unit to restore safe operating throttle control. This specific electronic and mechanical defect represents a widespread manufacturing vulnerability that General Motors has officially acknowledged under Special Coverage Adjustment N182188250. This failure poses an immediate safety hazard to occupants and surrounding traffic, as a sudden drop in throttle response on highways or busy intersections leaves the driver unable to maintain safe traveling speeds or accelerate out of oncoming hazards. General Motors has opened Corporate Case #113840289 regarding this failure but has failed to issue my safety reimbursement.
The worst 2017 Buick Lacrosse problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical11
- Transmission9
- Engine5
- Acceleration4
- Suspension4
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical11
- Transmission9
- Engine5
- Acceleration4
- Suspension4
- Airbags2
- Body1
- Brakes1
- Driver assistance1
- Fuel system1
- Seat belts1
- Seats1
- Steering1
- Visibility1
Recalls 2
Suspension: rear
- What is wrong
- General Motors LLC (C) is recalling certain 2017 Buick LaCrosse vehicles. The rear suspension toe-links may have been incorrectly installed, and, as a result, they may loosen and disconnect from the rear suspension system.
- Risk
- If a rear-suspension toe-link disconnects, it may cause a loss of vehicle control, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will inspect the left and right rear suspension toe-link assemblies, correcting their installation as necessary, free of charge. The recall began May 25, 2017. Owners may contact Buick's customer service at 1‑800‑521‑7300. GM's number for this recall is 17168.
Recall number 17V267000 · Recall details
Steering: electric power assist system
- What is wrong
- General Motors LLC (GM) is recalling certain 2017 Buick LaCrosse vehicles. The electrical connectors for the Electronic Power Steering (EPS) system may not be properly sealed. As a result, water may enter and corrode the connectors possibly resulting in a loss of power steering.
- Risk
- A loss of power steering may result in increased manual steering effort, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will inspect correct the seal seating and secure the EPS connector seals, free of charge. The recall began on March 14, 2017. Owners may contact Buick customer service at 1‑800‑521‑7300. GM's number for this recall is 17085.
Recall number 17V116000 · Recall details
Technical service bulletins for the 2017 Buick Lacrosse 1,204
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- PI to help diagnose A/C concern
- This preliminary information communicates information about how to determine if a wheel and tires size...
- This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a...
- This Preliminary Information communication provides information to the technician about vehicles that have...
- New Vehicle Monitoring Programs Section in IVH
- This Preliminary information communicates a possible issue with an engine timing chain, gear or crankshaft...
- Provide info on that parts restriction ending for the rear diff clutch control 19435910
2017 Buick Lacrosse crash test ratings
Government 5-star crash tests. Higher is safer. Each row is a body style and drivetrain that was tested.
| Version | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| Buick LaCrosse 4 DR AWD | 5 | 5 | 5 | 5 |
| Buick LaCrosse 4 DR FWD | 5 | 5 | 5 | 5 |
2017 Buick Lacrosse fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 3.6L 6‑cyl | FWD | 21 | 31 | 25 |
| 3.6L 6‑cyl | AWD | 20 | 29 | 23 |
What 2017 Buick Lacrosse owners say
Most recent owner complaints, unedited.
My 2017 Buick LaCrosse Premium AWD (116,220 miles) experienced a severe all-wheel-drive failure causing significant binding and a loud rumbling/clunking noise during sharp, low-speed cornering and acceleration. The vehicle has been officially inspected by two separate authorized manufacturer service centers. On September 25, 2026, a certified GM technician at Advantage Buick GMC formally documented that the vehicle has a prominent rear drivetrain failure, identifying it as a "rear diff or driveshaft issue" that requires full component replacement. Prior to the complete mechanical failure, no warning lights or dashboard indicators illuminated. The binding symptoms appeared suddenly during normal city driving maneuvers. This drivetrain failure directly aligns with documented corporate engineering safety campaigns, specifically Customer Satisfaction Program #16069 (propeller shaft/driveshaft C-clip disengagement defect) and TSB #18-NA-049 (catastrophic twin-clutch carrier assembly failure). The failure of this component poses a severe, immediate driving hazard as a sudden disengagement of the driveshaft or differential lockup at road speeds can result in a catastrophic loss of vehicle control. General Motors has ghosted my corporate case (#113840289) and refused to remedy this manufacturing vulnerability
This vehicle has major suspension issues containing the complete strut assembly, lower control arms, and strut yokes/forks, which can not be replaced due to the discontinuance of the vehicle and parts itself. Because of this the car cannot receive an alignment which cause the tires to be eaten up at a rapid rate. When going over a bump in the highway the steering column goes one way while the car goes another. The car slides all over the road. Extreme safety concerns for my family and I.
The contact owns a 2017 Buick Lacrosse. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the front driver's side wheel well. The contact stated that increased effort was needed to maneuver the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the front driver's side strut. The vehicle was not repaired because parts were not available. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was unknown. The VIN was not available.
The air bag warning light in the dash came on intermittently during driving. I took the vehicle to the dealer for service December 27, 2023, since it was a safety issue that the authorized dealer needs to take care of. At first, they said it was a bad battery and the safety system needed reprogramming. Which they did for about $800. When driving home from the dealer the air bag light came back on so a few days later I returned the car to the dealer. Then they said it was the passenger seat safety module that needed to be replaced. That was back in January of 2024, over 6 months ago. At that point I learned that the car is not drivable since the air bag could deploy at any time or would not function if requested in an accident. General Motors says they do not have the part that is critical to the operation of the air bag system to replace. That was over 6 months ago, with no prediction when they will have the part. This is a critical part of the safety system that they can't replace which leads me to believe there is more to this than they are telling me!! Federal law requires them to have parts for vehicles less than 7 years old - they don't!! How many other vehicles have this part? Is the part defective since it failed without any other causes that could be identified? Why can't they replace this critical safety part after 7 months of waiting with no end in sight!!!
The amplifier stopped working and all the sound comes through the amp including but not limited to seatbelt, door ajar, rear seat reminder, blinkers, back up sounds, and any and all sounds that the car my make for any safety features, onstar features, radio, Bluetooth, the list goes on.
The contact owns a 2017 Buick Lacrosse. The contact stated while driving at various speeds, the vehicle was making an abnormally loud stomping sound and the wheels were shuddering significantly. The contact stated that the failure had been recurring while driving. The vehicle was taken to the dealer, where it was diagnosed that the suspension yoke had failed and needed to be replaced; however, the part had been discontinued. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the part had been discontinued. The failure mileage was approximately 65,000. The VIN was not available.
The contact owns a 2017 Buick Lacrosse. The contact stated that the rear brakes were worn three times faster than the front brakes. The check engine warning light was illuminated. The contact was concerned about the safety of the vehicle. The vehicle was taken to the dealer, where it was diagnosed; however, the cause of the failure was not yet determined. The vehicle was taken to another dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to trade the vehicle. The failure mileage was approximately 33,000.
The contact owns a 2017 Buick LaCrosse. The contact stated while driving at an undisclosed speed, the Steering Advance System Declined message was displayed. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The contact related the failure to the federal safety agency Campaign Number: 17V116000 (Steering) however, the VIN was not included in the recall. The failure mileage was approximately 123,000.
Intermittent failure to start All electrical components failed to operate after total shutdown while at a stopped traffic light. After being towed to dealer it did start on its own.
Compare the 2017 Buick Lacrosse
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Other model years
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Questions about the 2017 Buick Lacrosse
Is the 2017 Buick Lacrosse reliable?
Owners have filed 36 complaints about the 2017 Buick Lacrosse, fewer than a typical Lacrosse model year.
What is the 2017 Buick Lacrosse year score?
The 2017 Buick Lacrosse scores 91 out of 100 (good). The score compares it with the other model years of the Buick Lacrosse: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2017 Buick Lacrosse?
Electrical system, with 11 complaints, typically around 10,000 miles. Next is transmission (9).
How many recalls does the 2017 Buick Lacrosse have?
2 recalls, covering suspension and steering.
Is the 2017 Buick Lacrosse safe in a crash?
In government crash tests the 2017 Buick Lacrosse scored 5 out of 5 stars overall, depending on body style and drivetrain (2 versions tested).
What year does the Buick Lacrosse have the most electrical problems?
The Buick Lacrosse model years with the most electrical complaints are 2008 (85 complaints), 2006 (84 complaints) and 2005 (80 complaints).
What gas mileage does the 2017 Buick Lacrosse get?
Official estimates for the 2017 Buick Lacrosse range from 23 to 25 mpg combined. The most efficient version (3.6L 6-cyl, FWD) gets 21 city and 31 highway.
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