This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
full bulletin at NHTSA ↗2007 Buick Rainier fuel system problems
moderate 10 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Failure mileage
Complaints
10
Recalls
0
Avg fix
$1,200
When does it fail?
Of the 10 fuel system complaints filed for the 2007 Buick Rainier, 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
Fuel system accounts for 26% of all owner complaints filed against this vehicle, across 6 categories tracked.
No new NHTSA fuel system complaint has been filed on this vehicle in over 14 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 consistently report a fuel gauge sender unit that delivers wildly inaccurate readings starting somewhere between 51,000 and 75,000 miles. The pattern is unmistakable: fill the tank, and the gauge reads empty while the low fuel light and audible warning activate—even though you just filled it. As you drive and burn fuel, the gauge stays pegged on empty until around the 1/2-tank mark, then begins tracking fuel level, though still erratically. Below 1/8 tank, accuracy falls off again.
This isn't a cosmetic problem. Multiple owners have been stranded when the gauge failed to warn them before the tank actually ran dry. One owner reported a stall at 50 mph when the gauge showed full while the tank was empty. Others have abandoned trust in the gauge altogether, managing fuel using trip odometer resets to the 300-mile mark.
The dealer fix is a sender unit replacement—about 2 hours labor and roughly $145 in parts. GM has acknowledged this as a known issue and will split the cost 50/50 with the owner, though the warranty won't cover it. No recall has been issued.
Same Buick Rainier fuel system reports on nearby years: 2005 · 2006
Failure modes owners describe
Fuel Gauge Sender Unit Malfunction
The fuel gauge sender unit fails, causing inaccurate fuel level readings. Owners report the gauge displaying empty when the tank is full, full when empty, or erratic fluctuations between full and empty throughout the tank range. The gauge typically begins working again around 1/2 tank but becomes unreliable below 1/8 tank.
When: Around 51,000–75,000 miles; multiple failures reported within 2-month windows after initial occurrence
Symptoms owners cite: Fuel gauge reads empty when tank is full; Fuel gauge reads full when tank is empty; Gauge fluctuates erratically between full and empty; Low fuel warning light illuminates despite adequate fuel; Driver information center audible alert sounds; Gauge stabilizes only between 1/2 and 3/4 tank
Repairs/costs cited: Dealer diagnosis: sender unit replacement. Repair cost approximately $145–$290 (owners cited $145 per side of split cost). Labor approximately 2 hours.
Recalls/TSBs owners mention: GM acknowledged the problem as known and offered to cover 50% of repair costs; warranty does not cover this failure. No recalls issued.
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Fuel gauge acts erratic. Shows 3/4 full, then slowly drops to empty with low fuel alarm sounding. I know there is fuel in the vehicle. Fuel sensing unit is malfunction. *tr
Tl* the contact owns a 2007 Buick rainier. The contact stated that the fuel gauge was providing inaccurate fuel level readings and would read that the tank was empty when it was actually full to capacity. When the tank was empty, the fuel gauge would read that the tank was full. The dealer informed the contact that her warranty would not cover the cost to repair this particular failure. The…
Fuel gauge will drop to empty and the low fuel light will come on, the driver information center will sound an audible alert and will show low fuel indicator. When you have a full tank of gas it will show a full tank and stay there until you use about 1/8th of a tank and then the fuel gauge start malfunctioning. Some times the fuel gauge will show full and some times it will show empty and all…
Tl* the contact owns a 2007 Buick rainier. After adding fuel to the vehicle, the contact noticed the fuel gauge displayed empty and the empty fuel tank warning light illuminated on the instrument panel. The vehicle was not taken to the dealer for diagnostic testing. The vehicle was not repaired. The approximate failure mileage was 75,000. Updated 11/14/12*lj
When fuel tank is filled to full, fuel gauge reads empty and low fuel warning appears on driver information center. Fuel gauge starts to indicate fuel level when fuel tank is about 1/2 full. Fuel level indication is very inaccurate when fuel level approaches 1/8 tank. Very easy to run out of gas. *tr
Had fuel system trouble with your 2007 Buick Rainier?
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 Buick Rainier?
It's a documented issue but not catastrophic. 10 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 9 complaints that reported odometer mileage, most fuel system failures cluster between 52,345 and 74,000 miles, with the median around 60,000. A quarter of owners report trouble before 52,345; a quarter make it past 74,000. 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/Buick/Rainier.
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.