Welcome to the Nation.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.
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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.