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

210,835

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

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 150,219 nationwide Silverado 1500 listings starting at $1,259.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 1,660
#2 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,440
#3 tenspeed
tenspeed
Reputation 1,350
View All

Related Models For Sale

Used GMC Sierra 1500
1,194 Great Deals out of 58,880 listings starting at $2,495
Used Ford F-150
3,485 Great Deals out of 207,573 listings starting at $1,273
Used Dodge Ram 1500
542 Great Deals out of 13,071 listings starting at $1,800
Used Chevrolet Silverado 2500HD
387 Great Deals out of 28,809 listings starting at $2,295
Used Toyota Tundra
698 Great Deals out of 28,803 listings starting at $2,500
Used Chevrolet Tahoe
1,083 Great Deals out of 32,097 listings starting at $1,495
Used Toyota Tacoma
805 Great Deals out of 34,294 listings starting at $2,988
Used Chevrolet Colorado
339 Great Deals out of 17,224 listings starting at $2,195
Used Ford F-250 Super Duty
451 Great Deals out of 43,257 listings starting at $2,995
Used Chevrolet Silverado 1500HD
17 Great Deals out of 293 listings starting at $4,938
Used Chevrolet Silverado 2500
6 Great Deals out of 267 listings starting at $4,200
Used GMC Sierra 2500HD
140 Great Deals out of 13,625 listings starting at $1,500
Used Dodge Ram 2500
177 Great Deals out of 5,707 listings starting at $2,900

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
46 Great Deals out of 80,366 listings starting at $19,398
2016 Chevrolet Silverado 1500 For Sale
354 Great Deals out of 16,957 listings starting at $18,657
2015 Chevrolet Silverado 1500 For Sale
356 Great Deals out of 7,620 listings starting at $16,397
2014 Chevrolet Silverado 1500 For Sale
492 Great Deals out of 11,126 listings starting at $12,888
2013 Chevrolet Silverado 1500 For Sale
276 Great Deals out of 6,500 listings starting at $9,950