This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
full bulletin at NHTSA ↗2005 Chevrolet Uplander electrical problems
severe 42 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
42
Recalls
0
Avg fix
$850
1crash
1fire
9injuries
When does it fail?
Of the 42 electrical complaints filed for the 2005 Chevrolet Uplander, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Of the 4 model years of Chevrolet Uplander we track for electrical problems, this one carries the most owner complaints on file — 42.
Owners have filed 42 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
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.
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 ↗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 ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2005 Uplander electrical system is a chronic mess. Owners describe complete power loss while driving—engine kills, power steering and brakes die, lights go out, and doors lock with occupants trapped inside. This happens at idle, at highway speeds, and over bumps. The ignition switch itself is faulty; it drops out of run position, and one owner at 340,000 miles says a weakened spring lets the whole cylinder fall and kill the electrics. Dealers refuse to help or claim they cannot diagnose the problem when it is not happening at the shop.
Flickering and dimming lights plague many owners. Headlights and interior lights dim when you brake or let off the accelerator, and flicker so badly that oncoming traffic thinks you are flashing high beams. Owners have had alternators replaced multiple times—problem returns. One dealer showed an owner paperwork that GMAC (GM's finance arm) was "trying" to fix it in December; by June, still no fix.
Power sliding doors open on their own while driving or parked, refuse to close, or trap occupants inside with uncontrolled force. The door chime beeps forever, even after the door is shut. Engines stall without warning, and vehicles refuse to start. Some owners have experienced a heated seat coil that overheats wildly and burns the seat and occupant skin. One owner's headlight bulb holder fell loose, rested on the housing, melted plastic, and started a fire. GM warranty disclaimers and refusals to repair are standard. One owner with 24,000 miles has visited dealers 22 times.
Same Chevrolet Uplander electrical reports on nearby years: 2006 · 2007 · 2008
Failure modes owners describe
Total electrical power loss / ignition switch failure
Complete electrical shutdown while driving or at stops, affecting engine, steering, brakes, lights, and dashboard. Multiple narratives cite ignition switch dropping out of run position. Owners report inability to restart, loss of door locks, and trapped occupants.
When: While driving at various speeds (30-65 mph), at stops, or during startup. One owner at 340,000 miles; others at lower mileage.
Symptoms owners cite: Engine shuts off without warning; No power steering or brakes; All lights go out (headlights, interior, dash); Dashboard instrument panel goes dark; No power whatsoever; key turning does nothing; Door locks malfunction; doors cannot be opened or unlocked; Power returns unpredictably after seconds to minutes
Codes mentioned: SERVICE ENGINE SOON, SERVICE ABS SYSTEM, SERVICE THEFT PROTECTION SYSTEM
Repairs/costs cited: Ignition switch replacement cited at $350 parts and labor. GM dealerships often claim inability to diagnose. One owner reported removing aftermarket radio per dealer requirement before GM would acknowledge responsibility.
Recalls/TSBs owners mention: Dealers claim no diagnosis possible when problem not occurring. GM dealership reprogrammed instrument panel in one case. One narrative mentions internal service bulletin on wire rerouting and module replacement for related door issues.
Flickering and dimming lights
Headlights and interior lights flicker, dim, or lose power intermittently during normal driving. Voltage instability causes inconsistent brightness. Problem worsens when brakes or accelerator are applied, or when not depressing accelerator.
When: Occurs at various speeds; worse in certain driving conditions (e.g., foggy weather, during braking). One owner reports progression from every 2 months to twice per week.
Symptoms owners cite: Headlights and interior lights flicker and dim; Voltage does not stay consistent; Lights dim when braking or accelerating, brighten when accelerating; Blower motor slows when not accelerating; Radio blinks off when stopping; CD changer makes ejecting noises; Static and electrical whining from speakers when accessories plugged in; Oncoming traffic perceives flickering as high-beam flashing
Repairs/costs cited: Alternator replaced multiple times (at least three instances of repeated replacement). Voltage regulator replacement mentioned. Plugs and wires replaced at dealership. Problem recurs after repairs.
Recalls/TSBs owners mention: Dealerships unable to duplicate problem; no repairs made in several cases. One narrative mentions GMAC attempting to correct the problem (as of June, with initial contact in December, no solution provided). GM states does not create dangerous situation despite safety concerns raised.
Power sliding door malfunction
Passenger and driver side automatic sliding doors open on their own while driving or parked, fail to close properly, or become stuck. Door chime sounds continuously even when door is closed. Doors lock but still open. Multiple failures and repairs required.
When: Occurs intermittently while driving at various speeds and while parked. Recurring issue after repair (one owner reports repair in 6/2012, problem recurred within one week).
Symptoms owners cite: Doors open themselves while driving or parked; Doors fail to close automatically; Doors lock but still open on their own; Open door chime beeps continuously, even after door is closed; Chime continues while driving, parked, and with key out; Door takes extended time to close (up to 30 minutes to hour); Door becomes stuck closed or cannot be opened from inside; Door closes on occupants with uncontrolled force
Repairs/costs cited: Five DVD player replacements, rear wiper motor, two radios, heated seat coil, and multiple door-related repairs cited in one narrative. Internal service bulletin mentions wire rerouting and possible module replacement. One owner reports part ordered three months ago with door still not fixed. Dealerships refuse repair without payment in some cases.
Recalls/TSBs owners mention: Internal service bulletin issued for wire rerouting and module replacement. One dealership stated this work was performed on their vehicle.
Engine stalling and no-start conditions
Engine stalls while driving without warning or fails to start. Vehicle may restart after multiple attempts or may not start at all. Stalling occurs at idle, during acceleration, over bumps, and at highway speeds.
When: Occurs at startup, while idling, while driving (including at 65 mph on expressway), and after experiencing power loss episodes. One narrative reports frequency of 15-20 times per week.
Symptoms owners cite: Engine stalls without warning; Vehicle will not start even with jump from tow truck; Engine misses on startup, requiring multiple attempts to start; Check engine light illuminates before stall; Service theft system warning message appears on dash before shutdown; Vehicle shuts off when driving over a bump; Abnormal noise and hesitation to accelerate reported with stalling
Codes mentioned: CHECK ENGINE, SERVICE THEFT SYSTEM
Repairs/costs cited: Ignition switch replacement diagnosed by independent mechanic in one case. Another narrative cites head gasket replacement needed along with ignition switch. Starter assembly replaced (twice in one case), though problem persisted; replacement part was under design and unavailable.
Recalls/TSBs owners mention: Manufacturer consulted in starter case; new part under design. Most cases report dealership unable to diagnose. One dealer programmed starter but problem recurred.
Heated seat overheating and fire hazard
Heated seat coil malfunctions, overheating excessively and causing burn marks on seat fabric and skin burns on occupant. Safety issue with potential fire hazard.
When: Occurred during normal operation with seat warmers activated.
Symptoms owners cite: Seat becomes extremely hot; Melt and burn marks on seat fabric; Occupant suffers burn and red marks on skin from leggings and exposed skin; Mechanic advised not to use seat warmers due to fire risk
Repairs/costs cited: New seat replacement costs at least $500 without labor. Heated seat coil replacement mentioned in one narrative requiring 5 replacements by 24,000 miles.
Recalls/TSBs owners mention: No manufacturer response noted in narratives.
Headlight assembly defects and fire
Headlight bulb holder loosens and falls, resting on headlight housing where it melts plastic, damages wiring harness, and ignites fire. Wiring harness cutting hazard from windshield wiper actuator.
When: Occurs during normal operation.
Symptoms owners cite: Headlight bulb holder loosens and falls to headlight housing; Plastic housing melts from bulb heat; Wiring harness melts; Fire starts in engine compartment with flames shooting out; Headlight dimming and flickering reported separately
Repairs/costs cited: Complete headlight assembly and mounting assembly damaged. Windshield wiper actuator bar cutting wiring harness (seven wires cut). Dealership fixed wires and fastened harness to windshield wiper fluid tank neck with electrical ties.
Recalls/TSBs owners mention: No manufacturer response noted in narratives.
Airbag non-deployment in crash
During collision at 35 mph on passenger side, airbags failed to deploy. Vehicle was destroyed. Middle row seats reclined unexpectedly. Driver and six passengers injured.
When: During side-impact collision at 35 mph.
Symptoms owners cite: Airbags did not deploy; Middle row seats reclined backwards unexpectedly; Multiple occupant injuries sustained
Repairs/costs cited: Vehicle destroyed in accident.
Recalls/TSBs owners mention: Dealer reprogrammed instrument panel. Vehicle had been to dealer multiple times prior for electrical system, dashboard, and other equipment issues.
Battery drain and charging system issues
Vehicle requires frequent jump starts and has charging system problems. Battery drains or vehicle will not hold charge.
When: Recurring issue requiring multiple jump starts over time.
Symptoms owners cite: Vehicle requires multiple jump starts; Will not start even with jump from tow truck; Voltage reader fluctuates up and down; Battery drained unpredictably
Repairs/costs cited: Battery replaced once. Voltage regulator and alternator replaced in another case. Same problem returned one year later.
Recalls/TSBs owners mention: No manufacturer response noted in narratives.
Door lock and unlocking malfunction
Door locks cycle rapidly, locking and unlocking at various times while driving. Doors refuse to unlock unless operated manually. Lock and unlock functions become unresponsive.
When: Occurs intermittently while driving and at rest.
Symptoms owners cite: Door locks rapidly lock and unlock at various times while driving; Doors will not unlock unless done by hand; Passenger side door does not always automatically unlock; Cannot open or unlock door when electrical system fails
Repairs/costs cited: Service bulletin references wire rerouting and module replacement mentioned for related electrical issues.
Recalls/TSBs owners mention: Internal service bulletin for wire rerouting and possible module replacement.
Radio and audio system failures
Radio stops working, requires replacement. Engine continues to turn over when key turned in ignition. CD changer makes ejecting noises.
When: Intermittently during operation.
Symptoms owners cite: Radio stops working; Engine continues turning over when key turned in ignition; CD changer makes ejecting noises like tape player; Static and electrical whining from speakers when accessories plugged in
Repairs/costs cited: Radio replaced multiple times (five DVD players, two radios cited in one narrative). Aftermarket radio removal required by dealership in one case.
Recalls/TSBs owners mention: No manufacturer response noted in narratives.
Synthesized from 42 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
The automatic doors on our 2005 Chevy uplander open by themselves, the alarms go off saying they are not shut, and if the driver's side rear door is opened, it takes about a half hour to get it to shut again. *tr
Driving the vehicle along the interstate at 65 MPH at night, the ignition switch run position rotated to off and the engine and all headlights, dash, etc, shutdown along with the power steering and power brakes. The incident has just started happening and 340,000 miles on it. Only way to get rolling is to put the auto trans lever to neutral and twist the ignition key to crank position and let…
2005 Chevy uplander shuts off while driving. Vehicle will not start back up sometimes. Radio and blinkers go off and on. Before vehicle shuts off a service theft system warning message comes up on dash display. *jb
Had electrical trouble with your 2005 Chevrolet Uplander?
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 2005 Chevrolet Uplander?
It's a meaningful issue. 42 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 32 complaints that reported odometer mileage, most electrical failures cluster between 12,380 and 119,000 miles, with the median around 52,000. A quarter of owners report trouble before 12,380; a quarter make it past 119,000. 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/2005/Chevrolet/Uplander.
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.