Fuel Filters
Grand Prix GT
Fuel Economy and Mileage

1999 3.8L GT gas mileage is down. Any Ideas?

User Avatar
Wiki User
2006-07-09 16:27:44

It is one of the oxegon sensors, I just replaced one myself on

my 97 GTP.


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.