This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.
full bulletin at NHTSA ↗2005 Buick LaCrosse body problems
moderate 13 complaints filed with NHTSA · avg repair $1,500 · see body across all vehicles →
Complaints
13
Recalls
0
Avg fix
$1,500
What stands out
Of the 5 model years of Buick LaCrosse we track for body problems, this one carries the most owner complaints on file — 13.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering body on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.
full bulletin at NHTSA ↗THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS.
full bulletin at NHTSA ↗This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new
full bulletin at NHTSA ↗Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion. This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron. This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Door lock mechanisms on the 2005 LaCrosse fail repeatedly across multiple doors. The plastic gear that moves the linkage wears out, leaving the door stuck locked and unopened. Owners report this starting around 60,000 miles and recurring at higher mileage on different doors—some had to have three doors rebuilt at roughly $250–$300 each. One owner was trapped for three days.
Door sealing is a chronic problem. Front doors leak badly in rain, and even factory replacement doors leak. Multiple seal replacements and bondo applications do not fix it. Doors drop noticeably when opened and produce wind noise.
Exterior door handles disassemble during normal use, roughly a year apart on different doors. One owner expressed concern about being unable to exit in an emergency.
Dashboard chrome trim creates blinding glare and windshield reflections, particularly in bright sun and visible in side mirrors—a distraction that caused headaches in at least one owner.
Water intrusion happens in multiple places: roof sealant fractures let water damage the instrument panel and shifter; foot wells soak after heavy rain. One trunk lid has a soft spot that concerns the owner about crash safety, though the dealer called it normal.
Instrument panel lights do not illuminate adequately, and one report mentions unexpected door locking while driving. Most issues went unrepaired or undiagnosed at the dealership.
Failure modes owners describe
Driver door lock mechanism failure
Metal gear engages plastic gear in door lock mechanism to operate interior and exterior handles. Plastic gear wears out, causing door to stick in locked position and remain unable to open even with repeated lock solenoid cycling. Affects driver door, passenger door, and rear doors across different mileage intervals.
When: First reported at 60,000 miles; recurred at 80,000 and 180,000 miles on different doors
Symptoms owners cite: Door stuck in locked position regardless of lock solenoid actuation; Door will not open despite repeated cycling of door lock; Required forced entry/breaking into vehicle; Multiple doors affected sequentially
Repairs/costs cited: $250–$300 per door replacement at dealer; lock mechanism replacement required
Door seal and alignment defects leading to water leakage
Front doors leak badly during rain despite original seals. Multiple repair attempts including seal replacement, bondo application, and factory door replacement did not resolve leakage. Replacement doors also leaked. Doors required multiple adjustments and doors drop approximately 1/4 inch when opened with excessive wind noise.
When: Began shortly after vehicle purchase in March 2005
Symptoms owners cite: Severe water leakage from front doors during rain; Excessive wind noise; Door drops approximately 1/4 inch when opened; Doors do not seal properly despite repeated repairs
Repairs/costs cited: New seals installed; bondo applied; both front doors replaced with factory doors; multiple adjustments required
Door handle disassembly
Outside door handles on driver side and rear passenger side fall apart during normal operation. Handles separate at different intervals roughly one year apart. No apparent cause provided by owner or dealer.
When: Approximately one year apart; owner did not specify exact mileage
Symptoms owners cite: Door handle falls apart when pulled; Handle disassembly on driver side and rear passenger side at different times
Repairs/costs cited: Door handles replaced
Dashboard chrome strip glare and reflection
Glare from chrome strip running across the width of the dashboard and rectangular chrome strip around gear selector causes blinding reflections onto windshield and into side mirrors. Reflections occur throughout the day on bright sunny days due to windshield angle. Causes driver distraction, headaches, and poor visibility. Reflections visible in both driver and passenger side mirrors.
When: No mileage specified; operational defect
Symptoms owners cite: Blinding glare from horizontal chrome dashboard strip; Chrome reflection onto windshield; Distraction from motorcycles or vehicles visible in side mirror reflection; Poor visibility during bright sunny days; Headaches from glare exposure; Reflections at all times of day
Recalls/TSBs owners mention: No recalls or TSBs mentioned
Trunk lid soft spot and structural concern
Trunk lid exhibits a soft spot that makes noise when touched. Dealer indicated this is a normal characteristic of the vehicle. Consumer concerned about structural integrity and safety in rear-end crash scenario.
When: No mileage specified
Symptoms owners cite: Soft spot on trunk lid; Noise when trunk lid is touched or pressed
Repairs/costs cited: Dealer advised it is normal; no repair performed
Recalls/TSBs owners mention: Dealer stated soft spot is normal vehicle characteristic
Roof sealant fracture and water intrusion
Roof sealant fractured, allowing water to leak into the vehicle interior. Water damage affected instrument panel and gear shifter. Vehicle not diagnosed or repaired at time of complaint.
When: Approximately 125,000 miles
Symptoms owners cite: Water leak from roof into vehicle interior; Damage to instrument panel; Damage to gear shifter
Repairs/costs cited: Vehicle not repaired at time of complaint
Unexpected door locking
Vehicle doors locked unexpectedly while being driven. Vehicle taken to dealer but not diagnosed or repaired. Limited details provided.
When: Approximately 40,000 miles
Symptoms owners cite: Doors locked unexpectedly during driving
Repairs/costs cited: Not diagnosed or repaired at dealer
Instrument panel illumination defect
Instrument panel lights do not provide adequate illumination for driver to read gauges and controls.
When: No mileage specified
Symptoms owners cite: Instrument panel lights insufficient for visibility
Water leakage into foot wells
Water accumulation in front and rear passenger foot wells following heavy rainfall. Suggests widespread sealing defect in vehicle body.
When: No mileage specified
Symptoms owners cite: Water pooling in front passenger foot well after heavy rain; Water pooling in rear passenger foot well after heavy rain
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had body trouble with your 2005 Buick LaCrosse?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the body problem on the 2005 Buick LaCrosse?
It's a documented issue but not catastrophic. 13 complaints have been filed. Repairs average $1,500 and most owners catch it before it causes a breakdown.
At what mileage does the body typically fail?
Based on the 13 complaints filed, body issues most often appear around 49,615 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $1,500 for body repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to body?
No active recalls currently cover body issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Buick/LaCrosse.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.