This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
full bulletin at NHTSA ↗2006 Buick Rendezvous electrical problems
moderate 15 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$850
When does it fail?
Of the 15 electrical complaints filed for the 2006 Buick Rendezvous, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 10 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical 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.
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
full bulletin at NHTSA ↗This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
full bulletin at NHTSA ↗The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
full bulletin at NHTSA ↗This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report a range of electrical failures that create serious safety hazards. The most alarming is sudden complete power loss at highway speeds—engine, power steering, and all electrical systems cutting out without warning. Two owners experienced this on interstates and nearly collided with trucks. One mechanic confirmed the problem was a faulty ignition switch by tapping the part while the engine was running, causing it to die immediately; GM initially denied the recall applied to that owner's vehicle.
Wiring harness problems appear in multiple reports. One owner found the engine wiring harness corroded and melted by battery acid because it was positioned on top of the battery due to poor routing design; the same owner found identical damage on other Rendezvous vehicles in the area. Others report needing to constantly manipulate fuse box wiring under the hood just to get the vehicle to start.
Reduced engine power failures are common, with the vehicle limiting speed to 15–35 mph and lighting up service warnings. One owner spent over $4,000 on repairs in 6 months for the same issue, only to have it recur days later. Hard starting when the engine is hot, stalling at low speed, and failed start switches round out the complaints. Battery and throttle body replacements have failed to solve some issues. One owner's mechanic advised discarding the vehicle.
Same Buick Rendezvous electrical reports on nearby years: 2005
Failure modes owners describe
Complete loss of power while driving
Engine, power steering, and all electrical systems shut down instantly while vehicle is in motion, with no warning. Occurs at highway speeds and leaves driver unable to steer or brake effectively. Mechanic diagnostics have identified faulty ignition switch as the root cause in at least one case, causing complete electrical cutoff.
When: Various mileages: 51,000–103,000 miles; incidents reported 2010–2016
Symptoms owners cite: Complete engine shutdown while driving at speed; Loss of power steering; Loss of all electrical power; Airbag warning light on for months prior; Check Engine light on intermittently; Vehicle restarts after repeated attempts or manipulation of electrical connections
Codes mentioned: Ignition switch failure (confirmed by mechanic tapping on part)
Repairs/costs cited: Ignition switch replacement; one owner reports GM dealer refused repair citing independence from manufacturer
Recalls/TSBs owners mention: GM customer service initially told owner vehicle was not on recall list; later identified as known defect in recall that some Rendezvous models were not included in
Wiring harness short and corrosion
Engine wiring harness positioned on top of battery due to design flaw, allowing battery acid to corrode and melt the wires. This causes false sensor codes, stalling, and power loss. Owner found identical problem on other local Rendezvous vehicles, suggesting systemic design issue.
When: 68,847 miles reported; failure started in 2010
Symptoms owners cite: Service Engine light comes on after stalling; Stalling during highway driving; Difficulty restarting; Melted and corroded wiring visible on harness
Codes mentioned: P0010 (Camshaft Position Sensor Faulty) — false code; wiring was real problem
Repairs/costs cited: Replacement of wiring harness ASM-ENG (part #15832816) cost $1,113.95; initial misdiagnosis and sensor replacement cost $330.64
Reduced engine power mode and throttle limitation
Vehicle enters reduced power mode, limiting acceleration to 15–35 mph and illuminating service lights. Repeatedly misdiagnosed and repaired as wiring harness or computer issue, but failure recurs within days. One mechanic advised owner to discard vehicle due to persistent wiring defects.
When: 130,000 miles; recurrent over 6-month period
Symptoms owners cite: Reduced Engine Power light illuminates; Traction System light illuminates; Severe deceleration; vehicle will not exceed 15 mph; Service Engine Soon light flashing; Sluggish acceleration; takes several seconds to reach 35 mph; Partial loss of power (running on 3 cylinders reported); Recurs 2 days after repair
Repairs/costs cited: Multiple repairs: wiring harness ($1,500+); computer replacement; wiring and fuse corrections; total repair costs exceeded $4,000 in 6 months with recurring failure
Intermittent stalling at low speed
Vehicle stalls without warning during low-speed driving and is very difficult to restart. In one case, loose battery connection was initially blamed but failure persisted. Root cause remains undiagnosed in most reports.
When: 62,000–103,000 miles; incidents 2009–2014
Symptoms owners cite: Stalling at speeds under 5 mph; Stalling while approaching stop signs; Sporadic recurrence; Difficult or impossible restart; Water intrusion into headlights, taillights, and cabin suspected in at least one case
Repairs/costs cited: Initial misdiagnosis: loose battery connection (incorrect); one case resolved but repair method not documented
Recalls/TSBs owners mention: Manufacturer notified in some cases; no recall or remedy offered
Start switch failure with door lock and window inoperability
Starter switch fails, preventing reliable engine start on multiple attempts. Simultaneously, driver-side door panel controls malfunction, disabling window and door lock operation. Replaced starter switch, but failure recurred multiple times.
When: 166,000 miles
Symptoms owners cite: Failure to immediately restart on numerous occasions; Driver door control panel not operating; Windows will not roll down; Doors will not lock; Recurring failure after repair
Repairs/costs cited: Start switch replacement (cost not provided); recurred multiple times after repair
Fuse box and harness wiring instability
Loose or unstable wiring in under-hood fuse box requires constant physical manipulation to achieve engine start. Owner must repeatedly move fuse box wiring to restore electrical contact. Indicates poor connector design or crimping that fails under normal vibration and temperature cycling.
When: 120,000 miles
Symptoms owners cite: Service Engine warning light flashes randomly; Vehicle will not start; requires manual fuse box manipulation; Engine stalls without warning; Constant need to maneuver fuse box wiring under hood to get vehicle to start; Vehicle becomes undrivable
Repairs/costs cited: Not repaired; vehicle not diagnosed
Recalls/TSBs owners mention: Manufacturer notified; provided no remedy
Body control module (BCM) failure
Body module (computer) fails suddenly during highway driving, causing total loss of power. Owner forced to coast to emergency lane. Module replaced at owner expense with no recall or warranty coverage.
When: 51,000 miles
Symptoms owners cite: Loss of all power while driving at 65 mph; Difficulty steering to emergency lane
Repairs/costs cited: Body control module replacement at owner expense
Recalls/TSBs owners mention: Manufacturer advised taking vehicle to dealer; no recall or warranty applied
Hard start when engine is hot
Engine refuses to start or cranks very slowly after vehicle has been running and parked briefly (e.g., while shopping). Requires multiple start attempts and manual fuel pump priming. Battery and throttle body replacement did not resolve issue.
When: Ongoing; exact mileage not stated
Symptoms owners cite: Hard start when engine is hot; Multiple start attempts required; Requires fuel pump priming while turning ignition; Persistent even after component replacement; Only occurs when vehicle is stationary
Repairs/costs cited: Battery and throttle body replaced; issue unresolved
Instrument cluster failure
Mileage display on instrument cluster stops illuminating, then resumes showing incorrect mileage figure. Failure recurs multiple times. Dealer identified need for cluster replacement but owner did not proceed.
When: Unknown mileage; failure occurred around 2013
Symptoms owners cite: Mileage light stops illuminating while driving at 40 mph; Mileage display shows wrong number when light resumes; Recurs numerous times
Repairs/costs cited: Cluster replacement recommended but not performed
Fuel gauge reading malfunction
Fuel gauge fluctuates wildly, making it impossible to determine actual fuel level in tank. Persisted even after dealer replaced main computer module, fuel gauge, and fuel tank sensor.
When: 30,000 miles
Symptoms owners cite: Fuel gauge reading fluctuates; Unable to determine actual fuel level
Repairs/costs cited: Main computer module, fuel gauge, and fuel tank sensor replaced; failure continued
Engine shutdown during operation with repeated component replacement
Engine shuts off while driving or fails to start immediately after driving. Reduced Engine Power light activates and throttles speed to 20 mph. Owner has replaced relay box, computer, alternator, ignition relay switch, and fuel sensor relay with no lasting resolution. Owner is now afraid to drive on highway due to risk of high-speed failure.
When: Recurring since October 2015; exact current mileage unknown
Symptoms owners cite: Engine shuts off while driving without warning; Engine fails to start after driving; Engine Power Reduced light comes on; Speed throttled down to 20 mph; Check Engine light stays on; Burned connector found in relay box
Repairs/costs cited: Relay box with burned connector replaced; computer, alternator, ignition relay switch, and fuel sensor relay all replaced; problems persist
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
I've had so many problems with this vehicle. Spent over $4000 in repairs in the last 6 months. The first problem I had was while driving on the highway the reduced engine power light and traction system light would come on and the vehicle would just decelerate and wouldn't go over 15mph. I had it repaired once and was told it was the wiring harness and then 2 months later the same thing happened…
Tl*the contact owns a 2006 Buick rendezvous. While driving between 25 to 35 MPH the vehicle would stall and become very difficult to restart. The dealer offered to inspect the vehicle but she declined and stated that they would improperly inspect the vehicle. She suspects that rain enters inside of the headlights, tail lights, and the cabin. The failure mileage was 90,000. The current mileage…
Had electrical trouble with your 2006 Buick Rendezvous?
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 electrical problem on the 2006 Buick Rendezvous?
It's a documented issue but not catastrophic. 15 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 14 complaints that reported odometer mileage, most electrical failures cluster between 68,847 and 144,000 miles, with the median around 123,000. A quarter of owners report trouble before 68,847; a quarter make it past 144,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical 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 electrical?
No active recalls currently cover electrical 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/2006/Buick/Rendezvous.
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.