Chevrolet Colorado & GMC Canyon Forum banner
1 - 3 of 3 Posts

·
Premium Member
Joined
·
3,051 Posts
Hello 355 Nation!
Been using this forum for months now as I've just picked up a 2009 Colorado. Thank you for all your information!!!! The truck has 84000kms. Yes you read correctly kms.
4x4 i5 3.7 Z71 Crew Cab. Dark Grey.
265 70 17 k02 - tire pressure is perfect on all 4.
2" torsion bar lift front, 2" shackle lift on back.
I use regular gas, nothing special.

I'm getting about 400km/250m on a full tank. That's 21.5l/100km / 10.9mpg. I do 70% highway 30% city/town driving.

I'm convinced this isn't good and I can get better. I just had my exhaust manifold gasket replaced. The mechanic said that could have been messing with an 02 sensor but I'm still getting the same fuel economy ( stated above ). What can I do ? I absolutely love my truck and want it to last.

Help me 355 nation View attachment 343324
View attachment 343325
View attachment 343323
View attachment 343322
Welcome to the Nation.
Find someone with a scan tool that can read live data and have them check short term/long term fuel trims and O2 sensor readings. The mileage is a bit low to expect a deteriorated O2 sensor, but it could be defective. Are those stock size tires? Find a phone app that shows speed and compare the reading with your speedometer.
 

·
Premium Member
Joined
·
3,051 Posts
It really is in amazing shape. Bought it this past summer from a couple that work in the oil fields in the west coast of Canada. They owned 5 vehicles. The owner has every single receipt for every oil change, tire rotation, etc. This is a real gem. Worth it to me to replace some parts if I can get better gas mileage.... O2 sensors, spark plugs, coils, engine tune, etc... I just don't know if any of this stuff really helps. Do you have any experience or knowledge with any of those replacements?
This is my opinion. Others may differ. While there are some parts that I will replace for what I call "preventive maintenance", they are done at specific mileage intervals and usually recommended by the Manufacturer. That includes spark plugs, O2 sensors, filters etc. O2 sensors and plugs are recommended at 160,000 km (100,000 mi). Otherwise, I don't replace a part unless I determine that it is defective. At 84000 km (52000+ mi), you shouldn't be into preventive replacements yet.

The exceptions to this recommendation would be if an owner had no way to properly troubleshoot a problem and wanted to try the advice of someone else that had the same problem. The problem with that is that it can get expensive and useless if the issue is with the component wiring, not with the part.

Here in the States, the fuel additives are different in winter and summer. That often causes a drop in mileage during the winter. Do you have that concern in Canada?

When you get an opportunity, find out what the fuel trims are.
 
1 - 3 of 3 Posts
Top