Vehicles with a 3.5L or 3.9L V6 engine may develop an engine oil leak from the front crankshaft seal. Our technicians tell us a revised front crankshaft seal is available to correct this concern.
Car Problem Reports
Pontiac G6 Oil Leak From Front Crankshaft Seal
Pontiac G6 Problem
Engines Affected: 3.5L V6, 3.6L V6, 3.9L V6
Average Mileage: 65,353 mi (28,900 mi - 140,000 mi)
Visitor, 2006 Pontiac G6, 3.9L V6, 60,000 mi
Small leak, no perceptible oil under the car, or out the exhaust. As noted, advised on routine oil change. A local Chevrolet dealer, (no Pontiac, right?)- relplaced the oil sensor-wasted $150 beans. My son has the same engine, and has lost a quart every 1m miles-47m now, and problem has existed since 30m, and multiple trips to the original dealer. I plan to take the info obtained from this site, (thx), and, finally, get this fixed-will advise results....
oil leaking. have add a qt and half evey week
Visitor, 2007 Pontiac G6, 3.5L V6
Diagnosed during a routine oil change at the dealership.
Visitor, 2007 Pontiac G6, 3.9L V6, 58,000 mi
Multiple engine leaks, not fixing...will trade in car for a reliable Toyota.
Visitor, 2007 Pontiac G6, 3.5L V6, 71,110 mi
Problem has not been fixed. First took the car in and they replaced the front seal and the right cyclinder head seal. Still leaks oil. Took it back and they replaced the oil pan gasket. In less than two weeks the oil is leaking in the same way as before. I bet they did not used the revised seal.
Visitor, 2007 Pontiac G6, 3.5L V6, 48,000 mi
Same leak on my g6 convertible hard top.
I have an Impala with 100,000+ and not a drip!
Visitor, 2007 Pontiac G6, 3.5L V6, 45,000 mi
Am having the same problem with my G6. Dealership claims that it was not covered by manufactures warranty. Called pontiac and they told me to pay for the diagnostics and repair, then I can file a claim with them to get reimbursed after they review the dealerships reports. This will be my last GM car ever. The new buicks and malibus are built from the same components as the G6 so I am sure the same problems will exist.
Visitor, 2007 Pontiac G6, 3.5L V6, 65,000 mi
This has been leaking since about 50,000. Been to dealer twice and will be going into shop once again. Leaking about a quart every 1,000 - 1,500 miles.