This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
full bulletin at NHTSA ↗2007 Pontiac G6 fuel system problems
moderate 17 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$1,200
When does it fail?
Of the 17 fuel system complaints filed for the 2007 Pontiac G6, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 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
Among the 5 model years of Pontiac G6 in our records for fuel system problems, this one ranks #2 by owner-complaint volume.
No new NHTSA fuel system complaint has been filed on this vehicle in over 9 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 fuel system 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 service bulletin provides the technician with additional information on fuels, fuel additives and fuel management.
full bulletin at NHTSA ↗This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
full bulletin at NHTSA ↗This Preliminary information communicates provides information to the technician on the use of R-99 or R-95 Renewable diesel fuel.
full bulletin at NHTSA ↗This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2007 Pontiac G6 consistently describe a cracked plastic elbow on the fuel pump assembly that leaks pressurized fuel (around 60 PSI) onto the top of the gas tank near rear exhaust pipes. The defect surfaces through a strong gasoline odor both inside the vehicle and in the garage when parked. Some owners notice difficulty starting—the first ignition cycle struggles, but the second succeeds once fuel pressure builds. Others discover visible fuel pooling on the tank or exhaust pipes after the crack enlarges. No check engine light or obvious performance issues warn of the problem; the odor is often mistaken for normal exhaust until it intensifies.
The fault appears linked to heat stress on plastic components; Arizona and Texas owners specifically note the correlation with high ambient temperatures. One mechanic reported seeing multiple GM vehicles, including several G6s, with identical failures in a single summer. Repair requires replacing the entire fuel pump assembly, which costs around $281 at independent shops or may be covered under dealer warranty if the vehicle is below 170k miles and parts came from GM.
Owners emphasize the fire hazard: fuel vapor accumulating in attached garages near pilot lights on water heaters and furnaces, with no early warning system. GM issued recalls for the same fuel pump cracking defect on 2007 Pontiac G5 and five other GM models (campaigns 09V-419 and 12V459000), but excluded the G6, leaving affected owners to pursue repairs without manufacturer support or recall coverage.
Same Pontiac G6 fuel system reports on nearby years: 2005
Failure modes owners describe
Cracked plastic fuel pump outlet elbow
The plastic elbow connector on the fuel pump assembly develops hairline cracks, allowing pressurized fuel to leak from the fuel line outlet at the top of the tank.
When: Primarily under hot climate conditions; some reports at 50k–80k miles, others undisclosed; complaints span 2007 model year vehicles
Symptoms owners cite: Strong gasoline odor inside and outside vehicle; Gasoline smell intensifies in garage when parked; Visible fuel pooling on top of tank and on exhaust pipes; No warning lights or performance issues initially; Difficulty starting (delayed first ignition cycle, easier on second attempt); Fuel leak only noticeable after crack enlarges
Repairs/costs cited: Full fuel pump assembly replacement required; owners cite $281 cost; some covered under manufacturer warranty up to 170k miles if parts purchased from dealership
Recalls/TSBs owners mention: Related to NHTSA Campaign 09V-419 (recall 12V459000) and 13E043000, which covered other 2007 GM models (Pontiac G5, others) but excluded 2007 G6; owners report being denied recall coverage due to VIN exclusion or aftermarket parts; GM noted vehicle was not included in recall expansion
Fuel pressure sensor malfunction concurrent with leak
Fuel tank pressure sensor reports short or failure alongside fuel pump outlet elbow cracking, though the primary leak source is the cracked plastic elbow.
When: Reported at 59k miles on one vehicle; timing coincides with fuel leak development
Symptoms owners cite: Fuel odor; Difficult starting
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Tl* the contact owns a 2007 Pontiac g6. The contact noticed strong fumes of fuel inside and outside the vehicle. The dealer diagnosed that there was a crack on the fuel pump above the fuel lines. The manufacturer indicated that the vehicle was excluded from a manufacturer recall. The manufacturer was notified. The failure mileage was not available. Updated 02/22/2017*ct *tr
Had fuel system trouble with your 2007 Pontiac G6?
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 fuel system problem on the 2007 Pontiac G6?
It's a documented issue but not catastrophic. 17 complaints have been filed. Repairs average $1,200 and most owners catch it before it causes a breakdown.
At what mileage does the fuel system typically fail?
Across the 14 complaints that reported odometer mileage, most fuel system failures cluster between 58,600 and 106,000 miles, with the median around 79,515. A quarter of owners report trouble before 58,600; a quarter make it past 106,000. 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 $1,200 for fuel system 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 fuel system?
No active recalls currently cover fuel system 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/2007/Pontiac/G6.
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.