Check gas cap light keeps coming on intermittently and now check engine light on. Replaced gas cap
and okay for awhile. Both engine light and check gas cap light went off. Now, back on again.
First check gas cap (which I did) and now engine light.
I have selected "me too" to 3 other common problems with the Lacrosse. I contacted buick for assistance on repairs and they said Garber Buick in Saginaw Michigan would only agree to $50 assistance on a $443 repair bill. How sad! But they had no problem taking bail out assistance from my tax paying money!!!!!!!!!!!!
I had the same problem with the check engine light always coming on. I would remove and replace the cap quite often and the light would eventually go off. Finally that stopped working so I went ahead and bought a new cap. Replaced the cap, filled the tank with gas, added some of that adatech additive for good measure, and the light went out the next day. It was worth a try because the Buick dealer would charge $130 for a diagnostic on the check engine light. Gas cap was $16 online. Another blog site mentioned putting vasoline around the seal area of the cap. Might be worth a try before getting a new cap. If my new cap starts acting up, I'm going to try the vasoline thing. Makes sense....as it does appear to be related to the seal.
Steady engine light came on. Went to Auto Zone and they diagnosed the problem and sold me Techron Complete Fuel System Cleaner. In the meantime light went off. Going to use Techron the next time I fill up with gas.
Check engine light on first time at 18,000 miles this was due to a bad wire from gas tank to sensor fixed light went out at 27,000 miles it lit up again this time they had to drop the gas tank and replace the sensor.Will see if this comes back.