Poor gas mileage : vortec 4300 4.3l v6 - silverado sierra
I hava a 2003 gmc sierra with a 4.3l v6 and it is killing me on gas. i fill up the tank and 150 miles later im at half a tank. what can i do to improve my gas mileage?.
Vortec 4300 engine specifications | ehow
You could find the vortec 4300 engine in the 1985 to 2005 chevrolet astro and gmc safari, the 1991 to 1993 gmc cyclone and gmc typhoon, the 1988 to 1995 chevrolet.