TroubleAtlas Score
OLDSMOBILE ALERO (1999–2004): Full Technical Specs & OBD2 Diagnostics
Built 1999–2004 · all production years covered on this single page
3.4L V6 • Gasoline
2004
© Wikimedia Commons CC BY-SA
TroubleAtlas Score
An independent value score for the Oldsmobile Alero (1999–2004) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliabilityn/a
Safety & recallsn/a
Repair costn/a
Parts & repairability7.3
Maintenance & durabilityn/a
Documentation & supportn/a
Independent · Verified · Never for sale
Every figure on this Oldsmobile Alero (1999–2004) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.
The Oldsmobile Alero (1999–2004) is powered by a 3.4L V6 engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.
Common problems
Common repairs
Fluids & lubricants
Battery
Fault codes (OBD2)
Dashboard lights
Parts comparator
Accessories & tools
Tyres
Recalls & TSB
Complaints
Workshops nearby
COMMON PROBLEMS
Transmission fault signal (TCM)MODERATE
The transmission module detected a fault — check separate transmission codes.
Related codes: P0700
Misfire / Loss of cylinderMODERATE
Rough running, idle vibration, power loss.
Related codes: P0300
Thermostat: coolant temperature lowLOW
Thermostat stuck open — engine does not reach operating temperature.
Related codes: P0128
Battery/system voltage lowLOW
System voltage below 10V — check alternator, battery or wiring.
Related codes: P0562
P0011LOW
Check with an OBD2 scanner.
Related codes: P0011
AVERAGE INDICATIVE COSTS
Prices may vary by area and workshop.
Full service
€ 120 – € 200
Full brake service
€ 180 – € 300
Spark plug replacement
€ 80 – € 140
Electronic diagnosis
€ 40 – € 70
WORKSHOP LABOUR RATES BY COUNTRY
Average independent-workshop hourly labour rates, to estimate repair costs in your country.
🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
📋 RECALLS & TSB (21)
NHTSA 03V327000
Exterior Lighting › Hazard Flashing Warning Lights › Switch
Date: 28/08/2003
CERTAIN PASSENGER VEHICLES HAVE HAZARD WARNING SWITCHES THAT MAY EXPERIENCE SOLDER JOINT CRACKING CAUSED BY RAPID TEMPERATURE TRANSITIONS AND THE SOLDERING PROCESS. IF SOLDER JOINT CRACKING OCCURS AND RESULTS IN AN OPEN CIRCUIT, THE TURN SIGNALS/HAZARD LAMPS BECOME INTERMITTENT …
NHTSA 03V327000
Exterior Lighting › Hazard Flashing Warning Lights › Switch
Date: 28/08/2003
CERTAIN PASSENGER VEHICLES HAVE HAZARD WARNING SWITCHES THAT MAY EXPERIENCE SOLDER JOINT CRACKING CAUSED BY RAPID TEMPERATURE TRANSITIONS AND THE SOLDERING PROCESS. IF SOLDER JOINT CRACKING OCCURS AND RESULTS IN AN OPEN CIRCUIT, THE TURN SIGNALS/HAZARD LAMPS BECOME INTERMITTENT …
NHTSA 00V140000
Structure › Body
Date: 18/05/2000
VEHICLE DESCRIPTION: THESE VEHICLES DO NOT COMPLY WITH THE OCCUPANT PROTECTION REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACT." THE CONSOLE COVER ON THESE VEHICLES DOES NOT STAY CLOSED WHEN A SPECIFIED VERTICAL LOAD IS APPLIED.
NHTSA 00V140000
Structure › Body
Date: 18/05/2000
VEHICLE DESCRIPTION: THESE VEHICLES DO NOT COMPLY WITH THE OCCUPANT PROTECTION REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACT." THE CONSOLE COVER ON THESE VEHICLES DOES NOT STAY CLOSED WHEN A SPECIFIED VERTICAL LOAD IS APPLIED.
NHTSA 98V320000
Steering › Steering Wheel/Handle Bar
Date: 15/12/1998
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE STEERING WHEEL CAN COME LOOSE FROM THE STEERING SHAFT BECAUSE THE STEERING WHEEL RETAINING NUT COULD HAVE BEEN IMPROPERLY TIGHTENED.
NHTSA 03V250000
Equipment › Other › Owners/Service/Other Manual
Date: 15/07/2003
CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." THE OWNER'S MANUAL DOES NOT EXPLAIN THE MEANING OF THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT LOWER…
NHTSA 00V372000
Power Train › Manual Transmission
Date: 13/11/2000
VEHICLE DESCRIPTION: CERTAIN PASSENGER VEHICLES EQUIPPED WITH MANUAL TRANSAXLES (RPO M86) FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 114, "THEFT PROTECTION." WHEN A DRIVER ATTEMPTS TO SHIFT FROM 5TH GEAR TO REVERSE, A SHIFT INHIBITOR CAUSES THE TRANSMISSION TO BE MECHANI…
NHTSA 00V372000
Power Train › Manual Transmission
Date: 13/11/2000
VEHICLE DESCRIPTION: CERTAIN PASSENGER VEHICLES EQUIPPED WITH MANUAL TRANSAXLES (RPO M86) FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 114, "THEFT PROTECTION." WHEN A DRIVER ATTEMPTS TO SHIFT FROM 5TH GEAR TO REVERSE, A SHIFT INHIBITOR CAUSES THE TRANSMISSION TO BE MECHANI…
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 07E021000
Fuel System, Other › Storage › Tank Assembly › Pressure Relief Devices
Date: 12/03/2007
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 14V400000
Electrical System › Ignition
Date: 03/07/2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (G…
NHTSA 04V528000
Vehicle Speed Control › Accelerator Pedal
Date: 01/11/2004
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 124, 'ACCELERATOR CONTROL SYSTEMS.' IN HOT AMBIENT CONDITIONS, THE ACCELERATOR PEDAL ARM MAY STICK AT THE ATTACHMENT TO THE BRACKET AND NOT RETURN TO THE ENGINE IDLE POSI…
COMMON OBD2 CODES TO CHECK
P0420
P0420
Powertrain
P0171
P0171
Powertrain
P0300
P0300
Powertrain
P0128
P0128
Powertrain
P0455
P0455
Powertrain
P0700
P0700
Transmission
P0442
P0442
Powertrain
P0172
P0172
Powertrain
P0401
P0401
Powertrain
All documented fault codes for this vehicle
The most documented diagnostic codes for this model, by system and severity. Tap a code for the full guide.
P0455
powertrain
LOW⏱ 0.62h avgP0442
powertrain
LOW⏱ 0.62h avgP0440
powertrain
LOW⏱ 0.78h avgP0420
powertrain
MEDIUM⏱ 1.24h avgP0300
powertrain
HIGH⏱ 1.22h avgP0172
powertrain
MEDIUM⏱ 1.13h avgP0171
powertrain
MEDIUM⏱ 0.95h avgP0730
transmission
MEDIUM⏱ 1.25h avgP0700
transmission
HIGH⏱ 1.25h avgP0401
powertrain
MEDIUM⏱ 1.25h avgP0011
powertrain
MEDIUM⏱ 5.4h avgU0100
network
HIGHP0562
electrical
MEDIUM⏱ 0.58h avgP0128
powertrain
MEDIUM⏱ 0.88h avg
DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE
53 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.
Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
Brake System WarningBrakes
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
Battery / Charging SystemElectrical
Low Fuel WarningFuel
ABS WarningBrakes
Brake Pad Wear IndicatorBrakes
Electronic Parking Brake (EPB)Brakes
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
Suspension Fault / Air SuspensionSuspension
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
4WD / AWD SystemDrivetrain
Bulb Failure WarningLighting
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
A/C System FaultHvac
Clutch Wear WarningTransmission
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
Rear Fog Light IndicatorLighting
Lane Departure / LDWS WarningADAS
Forward Collision Warning (FCW/AEB)ADAS
Blind Spot Monitor FaultADAS
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
Door Open WarningBody
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
REPORTED COMPLAINTS & PROBLEMS (NHTSA)
360 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Oldsmobile Alero across model years 1999–2004. These are real, verified reports submitted by vehicle owners.
24 crash reports 11 fires 20 injuries 3 deaths
Complaints by model year (most reported first)
Model year 200460
Model year 200360
Model year 200260
Model year 200160
Model year 200060
Model year 199960
Most reported components (all years)
Electrical System234
Exterior Lighting56
Engine48
Air Bags35
Steering27
Unknown Or Other19
Sample reports
TL* THE CONTACT OWNS A 2003 OLDSMOBILE ALERO. THE CONTACT STATED THAT WHILE DRIVING AT 15 MPH, THE VEHICLE LOSS POWER WITHOUT WARNING. THE VEHICLE WAS DIAGNOSED AND NEEDED TO HAVE THE PASS LOCK ASSEMBLY AND THE LOCK CYLINDER REPLACED. TH… (MY 2003)
2002 OLDSMOBILE ALERO GL CUSTOMER REQUESTING REIMBURSEMENT FOR IGNITION REPAIR. *MW THE IGNITION PASSLOCK CYLINDER AND MODULE WERE REPLACED FOUR TIMES. *JB (MY 2002)
MY FIRST PROBLEM WAS WITH THE SECURITY SYSTEM .THE CAR WOULD NOT START. LEARNED THROUGH THE INTERNET HOW TO RESET SYSTEM, FOR MY USED CAR NOT HAVING AN OWNERS MANUAL. THE NEXT PROBLEM WAS MY BLINKERS NOT WORKING, BE IT INTERMITTENTLY. I… (MY 2002)
MY TENSOR PULLEY IS GOING OUT AND MY SAFETY SENSORS LIKE ANTI LOCK, TRAC OFF AND NOW SERVICE ENGINE SOON KEEP COMING ON HAD IT IN SHOP AND FOUND NOTHING WRONG. NOW ITS MAKING LOUD NOISES.IT HAPPENS WHEN IM STOPPED AND MOVING (MY 2002)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 1999–2004.
Frequently Asked Questions
Does the Oldsmobile Alero have any safety recalls?
Yes — 21 official NHTSA recall campaign(s) affect this model, mainly: ELECTRICAL SYSTEM:IGNITION, FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. Check the recalls section for your exact year/VIN.
What does fault code P0300 mean on the Oldsmobile Alero?
Random/Multiple Cylinder Misfire Detected This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0128 mean on the Oldsmobile Alero?
Coolant temperature below thermostat regulating temperature — thermostat stuck open or faulty This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0011 mean on the Oldsmobile Alero?
A Camshaft Position Timing Over-Advanced or System Performance (Bank 1) This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
Are steering problems common on the Oldsmobile Alero?
Yes — 42 of 355 real owner reports filed with NHTSA mention the steering. One owner reported: “TL* THE CONTACT OWNS A 1999 OLDSMOBILE ALERO. WHILE DRIVING AT 20 MPH, THE SERVICE WARNING LIGHT INDICATOR ILLUMINATED. THE CONTACT HAD NOTICED THE POWER STEERING WAS NO LONGER EFFECTIVE AND DIFFICULT…” See the owner-reported complaints section below for more.
Are engine problems common on the Oldsmobile Alero?
Yes — 88 of 355 real owner reports filed with NHTSA mention the engine. One owner reported: “TL* THE CONTACT OWNS A 1999 OLDSMOBILE ALERO. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 15 MPH, THE VEHICLE STALLED AND WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS UNABLE TO RESTART. THE…” See the owner-reported complaints section below for more.
Are electrical problems common on the Oldsmobile Alero?
Yes — 174 of 355 real owner reports filed with NHTSA mention the electrical. One owner reported: “TL* THE CONTACT OWNS A 1999 OLDSMOBILE ALERO. WHILE DRIVING AT 20 MPH, THE SERVICE WARNING LIGHT INDICATOR ILLUMINATED. THE CONTACT HAD NOTICED THE POWER STEERING WAS NO LONGER EFFECTIVE AND DIFFICULT…” See the owner-reported complaints section below for more.
Which OBD2 fault codes are commonly documented for the Oldsmobile Alero (1999–2004)?
Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.
How often should the Oldsmobile Alero (1999–2004) be serviced?
Routine maintenance for the Oldsmobile Alero (1999–2004) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.
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