LEFT FRONT WHEEL BEARING ASS'Y HAS BEEN REPLACED TWICE BECAUSE OF MOAN/ROARING NOISE THAT INCREASES AND DECREASES AS SPEED INCREASES AND DECREASES. NOISE BECOMES NOTICEABLY LOUDER AS YOU MAKE A RIGHT HAND TURN - WHICH CAUSES THE LEFT FRONT WHEEL TO HAVE AN INCREASE IN WEIGHT BEARING. ORIGINAL REPLACED @ 78,042 MILES. FIRST REPLACEMENT BECOME SO NOISY THAT IT WAS REPLACED @ 79,264 MILES. NOISE W…
2009 Pontiac G8 powertrain problems
moderate 7 complaints filed with NHTSA · avg repair $2,500
Complaints
7
Recalls
0
Crashes
0
Avg fix
$2,500
What owners are reporting 3 most recent
TL* THE CONTACT OWNS A 2009 PONTIAC G8, WITH A 6 SPEED TRANSMISSION. HE CAN SHIFT FROM FIRST TO SECOND GEAR ONLY WHEN DRIVING BETWEEN 15 TO 20 MPH. CONSEQUENTLY THE VEHICLE WOULD SHIFT FROM 1ST TO 4TH GEAR. A TECHNICIAN FROM THE DEALER STATED THAT THE FAILURE WAS A NORMAL CHARACTERISTIC FOR THAT MODEL TYPE. THE PONTIAC MANUFACTURER WAS NOTIFIED, BUT NO ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE…
AUTOMATIC TRANSMISSION FAILS TO IMMEDIATELY DOWNSHIFT WHEN ACCELERATING TO MERGE INTO TRAFFIC, LEAVING CAR AND DRIVER IN PRECARIOUS PREDICAMENT WITH TODAY'S HIGHWAY SPEEDS. TRANSMISSION ALSO CAUSES A VIBRATION WHEN SPEED DECREASES AND CAUSES DOD TO BE IMPLEMENTED. DEALER HAS NO SOLUTION. *TR
Common questions
How serious is the powertrain problem on the 2009 Pontiac G8?
It's a documented issue but not catastrophic. 7 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. 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.
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