2005 Silverado-V8 Flex Fuel 4X4 20,000 miles No PowerI

10

Asked by Jun 26, 2013 at 11:38 PM about the 2005 Chevrolet Silverado 1500 Ext Cab 4WD

Question type: Maintenance & Repair

I've asked this question before,  still have the same problem.
A while ago my check engine light came on,  I had it checked at Autozone.  Code said
MAS was bad or another sensor could be the problem.  I waited a few months to
change the MAS because the light went off,  but eventually came back on,  and truck
was losing power under load.  I changed the sensor at this time.
The truck still has no power trying to pass, driving uphill,  and driving at elevation.
I took the truck to my local chevy dealer,  no codes showed up and they said nothing
was wrong.  They must not have gone for a test drive.  It's obvious something is wrong.  
The dealer did say the truck is running a little lean,  but they don't know why.(?)
My question is,  could it be the converters plugging up?  Since I did drive the truck a
few months before changing the MAS,  and the engine is running lean,  could this plug
the converters.  I just can't just start changing sensors.
The transmission seems to be shifting correctly and only has 20,000 miles,  I don't
think it could be the trans.
I've only used gasoline and not flex fuel.  This year truck has the in-tank,  100,000
mile(?)  fuel filter.
Any ideas out there?

2 Answers

247,345

Take the truck to a local mechanic and have them look at it. Tell them what you told us, they can check the cats. It could many different issues, and since you have no codes. we would be shooting in the dark. My guess is you might have a misfire . Could be a bad coil or a fouled spark plug or plugs. Sometimes you don't get a code, sometimes you do. How many miles on the truck, ever replace the plugs? A misfire, if left go can clog a cat eventually from unburnt fuel entering them.

Best Answer
10

Thanks Tom. The truck has only 20,000 miles, sits in the garage except for long trips. The plugs have never been changed. My S10 4.3 has more power!

Your Answer

Add photo

Related Questions

  • 2005 Silverado-V8 Flex Fuel 4X4 20,000 miles No PowerI 2 answers

    I've asked this question before, still have the same problem. A while ago my check engine light came on, I had it checked at Autozone. Code said MAS was bad or another sensor could be the problem....

    2005 Chevrolet Silverado 1500 Ext Cab 4WD

    -

    Maintenance & Repair

  • 2005 Silverado 4.3 no spark

    I have no power to the coil

    2005 Chevrolet Silverado 1500

    -

    Maintenance & Repair

  • 2000 Silverado 1500 4x4, eliminating 4x4 6 answers

    2000 Silverado 1500 4x4, High mileage lawn service truck with broken 4x4. Now starting to grind in case, I removed front axles and driveshaft and noise is gone. Is it ok to leave everything off and ju...

    2000 Chevrolet Silverado 1500 Ext Cab Short Bed 4WD

    -

    Maintenance & Repair

  • Fuel issue on Silverado 2 answers

    2005 Silverado. I cannot get it to turn over. It cranks but does not turn on. I checked to see if I could hear the pump in the tank prime and i got no sound.......so i lowered the tank, and checked...

    2005 Chevrolet Silverado 1500 Ext Cab 2WD

    -

    Maintenance & Repair

  • 5.3 liter flex fuel 5 answers

    I have a 09 Silverado crew cab 4x4 flex fuel 5.3 with the AFM crap and it has dropped a lifter and I'm looking to buy a motor. Is there a motor I can buy that will work in my truck that doesn't ha...

    2009 Chevrolet Silverado 1500 LT1 Crew Cab 4WD

    -

    Maintenance & Repair

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 182,796 nationwide Silverado 1500 listings starting at $999.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,440
#2 Rowefast
Rowefast
Reputation 1,950
#3 tenspeed
tenspeed
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
791 Great Deals out of 68,236 listings starting at $1,800
Used Ford F-150
2,086 Great Deals out of 191,511 listings starting at $290
Used Dodge Ram 1500
405 Great Deals out of 10,892 listings starting at $1,000
Used Chevrolet Silverado 2500HD
303 Great Deals out of 28,748 listings starting at $2,995
Used Toyota Tundra
447 Great Deals out of 34,306 listings starting at $1,950
Used Toyota Tacoma
561 Great Deals out of 42,406 listings starting at $1,995
Used Chevrolet Tahoe
597 Great Deals out of 33,197 listings starting at $1,375
Used Chevrolet Colorado
246 Great Deals out of 27,756 listings starting at $1,000
Used Ford F-250 Super Duty
326 Great Deals out of 43,857 listings starting at $1,450
Used Chevrolet Silverado 2500
9 Great Deals out of 257 listings starting at $3,495
Used Chevrolet Silverado 1500HD
10 Great Deals out of 286 listings starting at $3,995
Used Ford Mustang
689 Great Deals out of 44,311 listings starting at $1,500
Used Nissan Titan
174 Great Deals out of 18,907 listings starting at $3,995

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
296 Great Deals out of 125,299 listings starting at $20,589
2016 Chevrolet Silverado 1500 For Sale
150 Great Deals out of 5,757 listings starting at $17,900
2015 Chevrolet Silverado 1500 For Sale
236 Great Deals out of 8,507 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
259 Great Deals out of 10,283 listings starting at $9,798
2013 Chevrolet Silverado 1500 For Sale
155 Great Deals out of 4,978 listings starting at $8,950

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.