Owners of 2007 Cobalts describe fuel system failures centered on the plastic modular reservoir assembly (fuel pump module), where supply and return ports crack and leak fuel or fuel vapors. The problem is widespread enough that one owner found "everyone that gets this recall down" reporting identical issues. Owners smell strong gasoline both inside and outside their cars, especially after refueling, and many discover visible fuel puddles under the vehicle. In at least one case, fuel loss was severe enough to strand the driver; another owner lost over half a tank in a single fill. The plastic fuel lines at the tank top appear to be the weak point—they crack, weld seams fail, and fuel drips onto the ground or evaporates into fumes.
General Motors issued recalls 09V419000 and 12V459000 (and related service bulletins) to address this, but made them regional. They cover certain states only—Arizona, California, Florida, Nevada, and Texas for the 2007 Cobalt—claiming their warranty data shows the problem is worse in hot climates. Owners elsewhere, or those who purchased in an uncovered state and later moved, find themselves excluded. Even owners with VINs technically within recall breakpoints report being turned away because they don't live in the right state. Several owners have paid $550–$1,100 for private repairs after dealers and GM refused to help.
A secondary complaint emerges: owners who do get the fuel module replaced under recall report the new fuel gauge becomes unreliable, reading full when empty or vice versa, forcing them to cycle the ignition repeatedly to get an accurate reading. Dealers refuse to address the gauge problem separately, calling it outside the recall scope.
The geographic-limit strategy has backfired in particular cases. One owner purchased a 2007 Cobalt in Michigan and immediately drove it to Edwards Air Force Base in the Mojave Desert—one of the hottest places in America—yet is ineligible for the free recall repair because the car was not originally registered in California.
Failure modes owners describe
Fuel pump module—plastic ports cracking and leaking
The plastic supply or return ports on the modular reservoir assembly (fuel pump module) crack, causing fuel or fuel vapors to leak from the fuel tank area. Owners report discovering cracks in plastic fuel lines/ports at the top of the fuel tank, sometimes only visible after the tank is removed. Temperature exposure in hot climates is cited as a contributing factor.
When: Various mileages reported: 32,600 to 187,000 miles; some failures detected early (under 50,000 miles), others much later. Several owners report problem onset 2012–2014.
Symptoms owners cite: Strong fuel odor inside and outside vehicle, especially after refueling; Visible fuel leaks onto ground, often worst when vehicle parked on flat surface or incline; Fuel dripping from under vehicle or near fuel tank; Gasoline smell in garage; Increased fuel consumption/poor fuel economy
Codes mentioned: NHTSA Campaign 09V419000 (Fuel System, Gasoline: Delivery: Fuel Pump), GM Recall 090226, NHTSA Campaign 12V459000, Service Bulletin CSC-10051936-8902
Repairs/costs cited: Owners cite fuel pump module replacement costs ranging from $550–$1,100. One owner paid $593 for private repair; another $615.86. Fuel tank replacement has been quoted at $1,500 in at least one case. Dealers typically drop fuel tank to access and replace module.
Recalls/TSBs owners mention: GM issued recalls 09V419000 and 12V459000, but only for vehicles originally sold or currently registered in specific states (AZ, CA, FL, NV, TX for 2007 Cobalt; other states and model years have different coverage). Many owners report VINs excluded from recall despite identical symptoms. GM has stated vehicles must show signs of failure in dealer system before recall repair is authorized; some owners denied coverage citing 'salvage title' unrelated to fuel system. Regional recall structure means owners in non-covered states or with out-of-state purchase history may be denied coverage despite exposure to high temperatures.
Fuel gauge inaccuracy after module replacement
After fuel pump module is replaced under recall, the fuel gauge becomes erratic, reading full when tank is not, showing empty when fuel remains, or bouncing unpredictably. Owners report having to cycle ignition multiple times to get an accurate reading, and some have run out of fuel thinking the tank was full.
When: Occurs immediately after or within days of module replacement (recalls performed 2012–2014 timeframe). One case documented at 56,143 miles.
Symptoms owners cite: Fuel gauge reads full even when not, then drops to 1/4 tank after driving only 0.7 miles; Gauge returns to full only after cycling ignition 4+ times; Gauge shows empty when fuel remains in tank; Stranded on road or highway due to gauge reading empty when fuel present; Gauge oscillates or remains stuck below red/low fuel mark
Codes mentioned: Module kit 3.107 (defective replacement part cited by owner)
Repairs/costs cited: One owner reports being told by dealer to use only Chevron fuel; issue persisted. Dealer recommended fuel level sensor be replaced along with module. Owners describe the problem as widespread among peers who received the same module replacement. No repair costs cited for gauge issue; owners report dealer refused to address as 'not part of recall.'
Recalls/TSBs owners mention: Dealers and GM refuse to repair gauge as separate warranty claim, stating fuel gauge malfunction is not covered under the fuel pump module recall. One owner reports online forums show 'everyone that gets this recall down has had major problems with fuel gauge and fuel odor.' Owner states issue was not present before module replacement, suggesting defect in replacement part or installation.
Fuel tank crack or fuel line break
Owners report cracks in the fuel tank itself or breaks in fuel lines connecting the tank. One case involves a weld at the fuel fill connector that cracked; another describes a fuel line from the fuel filter that corroded and leaked. A third case documents a fuel pump line that broke off at the top of the assembly.
When: Mileages noted: 72,000; 112,000; 130,000–165,000+ miles. Most reported 2012–2014.
Symptoms owners cite: Fuel leak visible on ground under vehicle; Strong gasoline smell inside and outside car; Visible puddles of fuel in driveway or under car; Fuel loss—one owner lost over 1/2 tank after filling; another reported fuel loss while driving; Fuel efficiency drop (from 34 MPG highway to 26 MPG; from 27 MPG to 18 MPG in different cases); Fuel dripping observed
Repairs/costs cited: One owner paid $750 to repair corroded fuel line. Another paid $800+ at dealer for fuel tank leak repair. Fuel tank replacement quoted at $1,500. One owner performed DIY inspection and identified cracked plastic lines on fuel tank module after dealer failed to diagnose. Another owner paid private mechanic to diagnose after dealer wanted $250 diagnostic fee.
Recalls/TSBs owners mention: Several owners report dealer and manufacturer denied coverage, claiming VIN not in recall range or vehicle high mileage. One owner had fuel tank replaced by dealer post-recall but was later told tank damage was 'factory defaulted' and refused assistance. Another was told crack was 'defect on manufacturer end' but GM would not recall tank due to 'too much going on right now.'
Geographic/VIN exclusion from recall—coverage gaps
Owners with 2007 Cobalts experience fuel system failures identical to those covered under recalls 09V419000 and 12V459000, but are denied coverage because: (1) vehicle was not originally sold in/registered in specified states (AZ, CA, FL, NV, TX); (2) vehicle VIN falls outside narrow breakpoints; (3) salvage title (unrelated to fuel system) used as denial reason. Owner who purchased in MI, moved to CA (highest-risk environment) is ineligible because not registered in CA at sale. Another purchased in FL but excluded. Owners describe this as selective recall that fails to protect vehicles exposed to conditions causing the defect.
When: Recalls issued 2009–2012. Denials reported 2010–2014.
Symptoms owners cite: Strong fuel odor; fuel leak; cracked fuel pump plastic—same symptoms as recalled vehicles; Owner told by dealer and GM: 'VIN not in recall range,' 'not registered in qualifying state,' 'salvage title prevents coverage'
Codes mentioned: NHTSA Campaign 09V419000, NHTSA Campaign 12V459000
Repairs/costs cited: Owners forced to pay out-of-pocket: $550–$615.86 for repairs performed by private mechanics; $1,100 estimate by dealer; $600–$700 typical repair cost cited. One owner was quoted $1,100 diagnostic + repair by dealer.
Recalls/TSBs owners mention: GM issued geographic-limited recalls citing warranty data indicating problem 'far more common in hot-weather states.' Denies coverage to vehicles outside original sale/registration states even if owner moved vehicle to hot climate later. One owner received 'special coverage' letter instead of recall notice; coverage is time-limited and inspection/repair may incur charges. GM representatives stated 'warranty had been extended for 10 years for this problem as part of settlement,' yet denied repair due to salvage title unrelated to fuel system. Some owners report lack of recall notices despite being within VIN range.
Synthesized from 140 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.