2004 Pontiac Grand Prix Problems: 7 Known Issues
2004 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Pontiac Grand Prix has 7 documented known issues, with 4 rated critical. The most serious are 3.8L V6 Intake Manifold Gasket Coolant Leak ($947-$1,099 repair), Ignition Switch May Slip Out of Run Position (Recall 14V400000), 4T65-E Automatic Transmission Hard Shifting and Failure and Engine Oil Leak onto Exhaust Manifold - Fire Risk (Recalls 08V-118, 09V-116, 15V-201). Across all issues with published estimates, repair costs range from $100 to $1,099. DIY maintenance guides at au7o.io.
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All 7 Known Issues
NHTSA Recalls11 recalls
ELECTRICAL SYSTEM:IGNITION
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 (GM) notified the agency on July 3, 2014, that they are recalling 5,877,718 model year 2000-2005 Chevrolet Impala and Monte Carlo, 1997-2003 Chevrolet Malibu, 2004-2005 Malibu Classic, 1999-2004 Oldsmobile Alero, 1998-2002 Oldsmobile Intrigue, 1999-2005 Pontiac Grand Am and 2004-2008 Pontiac Grand Prix vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
STEERING
DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE VARIOUS VEHICLES LISTED ABOVE. A POTENTIAL MATERIAL OR DESIGN DEFECT COULD RESULT IN THE STEERING KNUCKLE BREAKING IN THE HUB AREA.
ENGINE AND ENGINE COOLING:ENGINE
General Motors LLC (GM) notified the agency on April 2, 2015, that they are is recalling certain model year 2004 Buick Regal vehicles manufactured April 9, 2003, to June 1, 2003, 2004 Chevrolet Impala vehicles manufactured April 8, 2003, to June 23, 2003, and 2004 Chevrolet Monte Carlo vehicles manufactured April 7, 2003, to June 23, 2003. On May 18, 2015, GM expanded the recall to cover an additional 49,751 2004 Pontiac Grand Prix vehicles manufactured January 6, 2003, to June 25, 2004. In the affected vehicles, the valve cover gasket may leak.
ENGINE AND ENGINE COOLING:ENGINE
General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.
EXTERIOR LIGHTING:HEADLIGHTS
DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
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Frequently Asked Questions
What are the most common Pontiac Grand Prix problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Pontiac Grand Prix has 7 documented issues. Documented issues include: 3.8L V6 Intake Manifold Gasket Coolant Leak, Ignition Switch May Slip Out of Run Position (Recall 14V400000), 4T65-E Automatic Transmission Hard Shifting and Failure. Of these, 4 are rated critical and should be addressed promptly.
Is the Pontiac Grand Prix reliable?
The 2004 Pontiac Grand Prix has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: 3.8L V6 Intake Manifold Gasket Coolant Leak and Ignition Switch May Slip Out of Run Position (Recall 14V400000) and 4T65-E Automatic Transmission Hard Shifting and Failure and Engine Oil Leak onto Exhaust Manifold - Fire Risk (Recalls 08V-118, 09V-116, 15V-201). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Pontiac Grand Prix problems?
Repair costs for known Pontiac Grand Prix issues range from $100 to $1,099, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 3.8L V6 Intake Manifold Gasket Coolant Leak, typically costs $947-$1,099 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 1997-2005 Pontiac Grand Prix 3.8L V6 Intake Manifold Gasket Coolant Leak?
The 3.8L (3800) Series II V6 used in many Grand Prix models is prone to upper and lower intake manifold gasket failure, where the gasket degrades near the EGR/coolant passages and leaks coolant. Leaks can be external (visible coolant pooling, low coolant, overheating) or internal… Repairs typically run $947-$1,099. Severity: high.
What is the 2004-2008 Pontiac Grand Prix Ignition Switch May Slip Out of Run Position (Recall 14V400000)?
NHTSA campaign 14V400000 covers 2004-2008 Pontiac Grand Prix vehicles for unintended ignition-key rotation out of RUN caused by key-ring weight, road conditions or another jarring event. The resulting engine shutdown can also prevent air-bag deployment. The recall remedy is a key… Severity: high.
What is the 2001-2008 Pontiac Grand Prix 4T65-E Automatic Transmission Hard Shifting and Failure?
The 4T65-E in 2001-2008 Grand Prix models has several different shift and failure conditions, not one single cause. Examples include P0756/P0757 shift faults, P0741/P0742 TCC paths, pressure-control and valve-body work, second-clutch shudder, V8 torque-converter conditions, slips… Severity: high.
What is the 1997-2004 Pontiac Grand Prix Engine Oil Leak onto Exhaust Manifold - Fire Risk (Recalls 08V-118, 09V-116, 15V-201)?
NHTSA campaigns 08V118000 and 09V116000 cover affected 1997-2003 supercharged and naturally aspirated 3.8L Grand Prix vehicles for front valve/rocker-cover oil leakage and fire risk; campaign 15V201000 covers a bounded 2004 Grand Prix population. The campaigns identify oil reachi… Severity: high.
What is the 2001-2005 Pontiac Grand Prix Key Sticks / Won't Turn or Come Out of Ignition?
Owners frequently report the key becoming stuck in the ignition cylinder, unable to be removed or unable to turn to start, due to wear in the ignition lock cylinder and shift-interlock/Park-position issues. This is among the most-reported complaints for the seventh-generation car… Repairs typically run $150-$400. Severity: medium.
What is the 1997-2008 Pontiac Grand Prix HVAC Blower Motor Resistor Failure (Fan Stuck on High / Lost Speeds)?
The blower motor resistor commonly fails, leaving the heater/AC fan working only on the highest setting or losing lower speeds (e.g., 1 and 2 dead while 3-5 work). Contributing factors include cowl water leaks dripping onto the resistor/connector and causing corrosion, and on 200… Repairs typically run $100-$250. Severity: low.
What is the 1997-2007 Pontiac Grand Prix Supercharger Coupler Rattle (GTP / L67 Supercharged 3.8L)?
On supercharged GTP models with the L67 (and the later L32 supercharged 3.8L), the Eaton M90 supercharger develops a noisy front coupler/isolator as the elastomer wears, producing a rattle or knock from the front of the blower. Owners report the rattle can return roughly 10,000 m… Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.