For a 2004–2006 Pontiac GTO, the right response to an engine symptom depends on the car’s model year, engine, and test results—not a list of supposed common failures. The available service sources cover a 2004 5.7L V8 and later 6.0L V8 applications; confirm the year and engine using the VIN and underhood label before choosing parts or following a procedure. A misfire code, oil loss, or bulletin entry is a reason to investigate, not proof of a specific failed part.
What engine problems are documented for the Pontiac GTO?
GM service-information indexes list topics relevant to GTO engine diagnosis, including oil consumption, rear-cover oil leaks, ignition service, intake-manifold inspection or replacement, and catalytic-converter damage associated with misfire codes. An index entry shows that service information exists; it does not establish that the condition is widespread or that it explains a particular car’s symptoms. The available sources do not establish population failure rates, mileage thresholds, or typical repair costs.
As an Amazon Associate I earn from qualifying purchases.
The model-year distinction matters. The indexed service material identifies the 2004 GTO as a 5.7L V8 application, while later material covers a 6.0L V8. Verify the vehicle’s engine and use year-correct service information before ordering components or attempting repairs. 2004 GTO 5.7L service information
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsHow to approach a 2004 GTO misfire or check-engine light
Retrieve diagnostic trouble codes and record when the symptom occurs before replacing parts. A code can narrow the investigation, but it does not by itself identify a failed coil, spark plug, injector, sensor, or internal engine part.
#1 Best Overall
- All-aluminum construction provides greater heat and pressure tolerance, better heat dissipation and improved structural rigidity
- Built with high density multi-louvered fins for maximum cooling efficiency, to ensure durability in extreme weather
- Direct bolt-on OE fitment or replacement for factory unit, fast and simple installation
- Improves cooling by 35% to 45% temperature
- We will provide 12 months after-sales service for the product; Please feel free to contact us if you have any questions
Use codes and cylinder counters as diagnostic leads
GM’s misfire-monitor description says the PCM evaluates crankshaft-speed variation using crankshaft- and camshaft-position signals. Scan-tool misfire-counter data can help identify affected cylinders and point toward shared circuits or components. The same service description notes that rough roads can create torque variation and temporarily trigger a false misfire indication. A scan tool should support live data and the needed misfire counters; check its stated GTO model-year coverage before relying on it.
For the applicable 2004 5.7L procedure, see Operation CHARM’s Misfire Monitor Diagnostic Operation.
Rank #2
- Application: Chevelle El Camino Pontiac GTO Cutlass Lemans 1968 1969 1970 1971 1972 CC161 V8 Engine
- Overall Size: 33.00" *18.63" (Include the inlet outlet)
- Inlet/Outlet: 1.5"/1.57"(38/40mm)
- Trans Cooler: Included(φ32×215×G1/4（Z）)
- Leakproof : All products are subjected to leak tests, the high-grade aluminum core are used in our radiators, which help ensure radiators' longevity
Know when to stop driving
A flashing warning light with an active misfire, severe shaking, unusual mechanical noise, or a loss-of-oil-pressure warning calls for prompt professional diagnosis. Avoid hard driving while the issue is unresolved: continued misfire can damage emissions hardware, and an oil-pressure warning warrants immediate attention. None of these symptoms alone proves internal engine damage.
Free tools Windows power users keep installed
One-click scans. No signup required.
What to check if a GTO is burning oil or losing oil
First check the actual oil level and how quickly it changes. Inspect for visible external leaks, including the rear-cover area, and have a technician follow the correct service procedure before concluding that oil is being consumed internally. GM’s 2004 bulletin index includes an oil-consumption guideline and a rear-cover oil-leak topic; these are inspection leads, not proof of a defect in every car. 2004 GTO technical service bulletin index
Rank #3
- FITMENT--This Radiator For Pontiac GTO Base Coupe 2-Door 6.0L 5967CC 364Cu. In. V8 GAS 2005 2006. This radiator is developed based on old radiator's structural data, adhering to the layout and interface standards of the old radiator. It aims to achieve physical compatibility with original vehicle components, providing you with the most suitable option
- SIZE--Core Size:26 4/7" x 16 6/7" ,Overall Size:32 2/3" x 19 1/2",Inlet Size:1 3/8",Outlet Size:1 3/8". We recommend that before purchasing or installing, you can use this data to conduct a preliminary comparison with the actual available space in your vehicle's engine compartment, serving as an objective reference for your purchasing decision
- METERIAL--Made from aluminum for prolonged lifespan and with raw aluminum finish. A good balance has been achieved between thermal conductivity, weight control, and mechanical strength, which serves as the foundation for ensuring rapid heat dissipation and dispersion from the heat source to the fins, providing a reliable material guarantee for overall heat dissipation efficiency
- FEATURE--This aluminum radiator is at least 40% more efficient than stock ones. Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications
- INSTALLATION--The installation of the radiator involves the vehicle cooling system. To ensure performance and safety after installation, we recommend that this work be done by qualified professionals. Standard installation is a prerequisite for the product to work properly. Any issues caused by non-professional installation are not covered by the product quality warranty
How seriously to treat a cylinder-bore concern
A search-indexed secondary summary of GM preliminary information PIP5163A says cylinder-bore damage, scoring, or an out-of-round condition could cause oil consumption, misfire, cylinder leakage, or blow-by on a 2004 GTO. The underlying GM page is not established by the available material, so this should not be treated as a confirmed diagnosis or a prevalence claim. Verify the issue against current GM service information and appropriate mechanical tests before recommending internal engine work. CarComplaints’ indexed 2004 GTO bulletin summaries
Oil maintenance guidance for the 2004 and 2006 GTO
Owner-manual instructions are model-year specific. The 2004 manual says to use oil meeting GM Standard GM6094M and carrying the API certification symbol. It describes an oil-life system based on use rather than a fixed mileage interval, says to reset the system whenever oil is changed, and calls for changing oil and filter at least once a year. It also directs owners to check oil regularly, keep it at the proper level, and not add oil additives. These are historical manual instructions; confirm what applies to the individual vehicle and current service guidance. 2004 Pontiac GTO Owner’s Manual
Rank #4
- Part Number: Replace Carter M6122, Delphi Fuel Pumps MF0100, Spectra Premium SP1046MP, ACDelco 41382, Airtex Fuel Pumps 41382, Dana Commercial Vehicle Service Parts 602-1111, 602-1135, General Motors 6440933, 6470513
- Part Number: Replace 1-800-Radiator 2960122, Carquest Premium Fuel Pumps 3541159, Purolator 41382, CARQUEST Fuel Pumps 41382, Facet 41382, GMB 530-8400, NAPA Fuel Pumps B0208P, Precision Fuel M20011, TruGrade A11132005TG
- Application: Fits 1977 Pontiac Parisienne, 1970-1972 Pontiac GTO, 1977-1980 Pontiac Laurentian, 1968-1977 Pontiac LeMans, 1975 Pontiac Grandville, 1975-1978 Pontiac Grand Safari, 1970-1972 & 1975-1977 Pontiac Grand Prix, 1975-1977 Pontiac Grand LeMans, 1975 Pontiac Grand Am, 1975-1981 Pontiac Firebird, 1970-1978 Pontiac Catalina, 1970-1971 & 1975-1978 Pontiac Bonneville, 1975 Oldsmobile Delta 88, 1975 Oldsmobile Custom Cruiser, 1975 Oldsmobile 98, 1975 Buick LeSabre
- Application:Fits 1968-1981 Pontiac Buick Oldsmobile Pontiac 4.9L 6.6L 5.7L 7.5L 301 350 400 455 CID V8 Engines; Qualifier: With 3 Line Pump; With Long Pump Housing
- Specifications: Maximum Pressure: 9 PSI; Maximum Flow Rating: 45 gph; Inlet Type: Hose; Outlet Type: Hose; Outlet Fitting Thread Size: 5/8-18 UNF-2B; Fuel Type: Gas; Minimum Pressure: 7.5 PSI; Minimum Flow Rating: 40 gph; Outlet Thread Diameter: 14.5 MM, 0.57 IN; Average Flow Rating: 40 gph
The 2006 manual likewise calls for keeping oil at the proper level, changing the oil and filter at least annually, and resetting the oil-life system after service. It says to arrange service within the next 600 miles after the service message appears. 2006 Pontiac GTO Owner’s Manual
Other service topics that may be relevant
The indexed 2004 GTO bulletin catalog also covers noise or damage following an oil-filter change, spark-plug replacement and gapping, intake-manifold inspection or replacement, and catalytic-converter damage associated with misfire codes. These subjects support checking the symptom against the applicable service procedure; they do not establish how often the problem occurs or prove what caused it on a specific vehicle. 2004 GTO technical service bulletin index
Best Value
- Replacement Part Numbers: 17913N, 41048087, 410-48087, 92156802, 92169668, M000T85582, M000T85591, SMT0259, SMT0360, 17913
- Condition: New; Voltage: 12V; kW: 1.4; Rotation: CW; Tooth Count: 10; Mounting Hardware Included: No; Number of Pieces: 1; Country of Origin: CN
- Compatible With Pontiac GTO Base 5.7L 2004; GTO Base 6.0L 2005-06 - See the Description for more Applications
- See Product Description for Additional Specifications
- OEG Parts New Starter Compatible With Pontiac GTO 5.7L 6.0L V8 2004 2005 2006 04 05 06, Compatible With GM 92156802, 92169668, Mitsubishi M000T85582, M000T85591, SMT0360, 41048087, SMT0259
Check recalls by VIN
Recall applicability is vehicle-specific. Enter the vehicle’s VIN in GM’s recall lookup rather than assuming a model-wide engine recall applies. The available recall information does not establish a universal GTO engine recall.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
