Asked by Feb 01, 2017 at 06:34 AM about the 2008 Chevrolet Silverado 1500 LS Crew Cab 4WD

Question type: Maintenance & Repair

I have a 08 silverado crew cab 5.3 v-8 ..put 93
octane gas in it and engine light came on,can any
one tell me what this might be??

2 Answers


Get the codes pulled at someplace like autozone, write then down and repost back here and someone will jump in and help you with further diagnosis, the only way the fuel could cause the light to come on is if it was bad and you would notice that right away with no power, pinging, etc. I run 93 octane in my Yukon when I am taking a trip and am going to be crusing a freeway speeds, it allows for more spark advance from the computer and thus better fuel mileage at those speeds. I would run it all the time but it just not worth only a mile per gallon more in combined driving compaired to the extra 4 at freeway speed.


Yes, the codes...

Your Answer

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
  • #2
  • #3
    Andrew Olsen
View All

Related Models For Sale

Used GMC Sierra 1500
889 Great Deals out of 65,336 listings starting at $1,995
Used Ford F-150
2,318 Great Deals out of 182,094 listings starting at $1,000
Used Chevrolet Silverado 2500HD
324 Great Deals out of 29,082 listings starting at $2,995
Used Dodge Ram 1500
392 Great Deals out of 10,914 listings starting at $1,500
Used Toyota Tundra
492 Great Deals out of 32,176 listings starting at $1,999
Used Toyota Tacoma
604 Great Deals out of 42,670 listings starting at $1,500
Used Chevrolet Tahoe
664 Great Deals out of 39,392 listings starting at $1,000
Used Chevrolet Colorado
276 Great Deals out of 31,341 listings starting at $1,995
Used Ford F-250 Super Duty
373 Great Deals out of 44,451 listings starting at $2,400
Used GMC Sierra 2500HD
107 Great Deals out of 13,415 listings starting at $2,999
Used Ford Mustang
711 Great Deals out of 38,301 listings starting at $895

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.