Auto racing
Add news
News

Mechanical help...08 GMC Sierra

0 4
I just recently bought this truck, 2008 GMC Sierra 1500 4x4 5.3 gas, 235,000 miles. It has been running "ok" until just recently when I started to have a blinking engine light, and it started to run rough, especially in speeds greater than 60 mph.

Before having these issues though, I would like to state the engine codes I have been throwing and the problems, while it was still up to drivable standards. The oil pressure reads low to the point the oil light comes on when close or at an idle, but when I gas it or am going down the road, I read a perfect oil pressure. I figured that was a sensor, because I have been driving it for months like this. The codes are, P0307 (cylinder 7 misfire), P0455 (EVAP Emission control system leak), and P0449 (EVAP Emission Control System vent valve/solenoid circuit malfunction). It has always had a gas consumption issue, at first, I thought it may be because it was a jacked-up truck. I average 11-12mpg with a 12" lift on 285 tires. I just want to make sure I give all the information needed to help diagnose this.

I currently have this vehicle parked, but it is the best vehicle I have, (I know right.). I have researched to the bottom of every article and have not gotten any closer. I have ideas, but I need some help. Thank you in advance.
Загрузка...

Comments

Комментарии для сайта Cackle
Загрузка...

More news:

Speedway Media
Dragbike Magazine

Read on Sportsweek.org:

Other sports

Sponsored