check engine light on

Asked by Mar 04, 2010 at 02:53 PM about the 2005 Chevrolet Silverado 2500HD 4 Dr LT 4WD Extended Cab SB HD

Question type: Maintenance & Repair

Check Engine light came on, took it to Autozone, and code came with O2 sensors (all four) were bad.  This does not make sense to me for all 4 to go bad at the same time.  I asked if they can reset the code, but they said it was illegal to do so.  My next move is to disconnect the battery and see what happens.  Any thoughts?

3 Answers

8,650

Other problems could be causing it to think all four are bad. Typically it is something emission related like the a blown fuse on something like the 02 sensor heaters. What error code do it give?

3 out of 3 people think this is helpful.
170

i would just like 2 know how to reset the engine light! does anybody know how?

17 out of 17 people think this is helpful.
8,650

You can do it with a code scanning tool or by unhooking the battery for a few minutes.

7 out of 7 people think this is helpful.

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 27,146 nationwide Silverado 2500HD listings starting at $2,998.

ZIP:

Search Chevrolet Silverado 2500HD Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 260
View All

Related Models For Sale

Used GMC Sierra 2500HD
144 Great Deals out of 13,225 listings starting at $3,500
Used Ford F-250 Super Duty
438 Great Deals out of 42,882 listings starting at $2,750
Used Chevrolet Silverado 1500
2,577 Great Deals out of 151,148 listings starting at $1,500
Used Dodge Ram 2500
161 Great Deals out of 5,626 listings starting at $2,995
Used Chevrolet Silverado 2500
5 Great Deals out of 282 listings starting at $3,995
Used GMC Sierra 1500
1,020 Great Deals out of 59,988 listings starting at $1,299
Used Ford F-150
3,031 Great Deals out of 207,234 listings starting at $1,990
Used Ford F-350 Super Duty
444 Great Deals out of 26,093 listings starting at $2,999
Used Chevrolet Silverado 1500HD
11 Great Deals out of 313 listings starting at $4,988
Used Toyota Tundra
672 Great Deals out of 27,897 listings starting at $2,500
Used Chevrolet Silverado 3500
27 Great Deals out of 631 listings starting at $5,000

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
8,483 listings starting at $22,010
2016 Chevrolet Silverado 2500HD For Sale
22 Great Deals out of 8,092 listings starting at $23,384
2015 Chevrolet Silverado 2500HD For Sale
78 Great Deals out of 2,033 listings starting at $19,500
2014 Chevrolet Silverado 2500HD For Sale
23 Great Deals out of 612 listings starting at $16,995
2013 Chevrolet Silverado 2500HD For Sale
9 Great Deals out of 1,071 listings starting at $9,999