2004 Silverado check engine light is on when you hook up scanner multiple errors or problems ? Truck runs fine shows dash cluster is bad , engine preheat air is bad etc etc ?

Asked by Aug 31, 2016 at 04:21 PM about the 2004 Chevrolet Silverado 2500HD 4 Dr LS 4WD Extended Cab LB HD

Question type: Maintenance & Repair

Every thing in truck runs fine. Duramax diesel, code scanner shows many
errors but every thing works fine ?? It shows dash cluster bad , engine
preheat air relay bad, class 2 data link malfunction.. loss of communications
to engine control system , rear wheel speed sensor malfunction, glow plugs
bad ?? and a couple other items, Gees the truck runs fine so why is it saying
truck is needing total over haul ??? any ideas ????  

2 Answers

215

Those silverados are really sweet rides but when that check engine light comes on you better have it checked by a shop w/ all the right stuff; sorry, but those lights don't come on for frivolous reasons and did you know a used car dealer will not buy any vehicle that displays a check engine light? This can result from lack of regular maintenance checkups that would replace oil at so many miles, etc. very important to do; u gonna need a pro, sorry and best results for you

That is what is weird I have this truck serviced like clock work if there is an issue of any kind I have it fixed asap. But to have it think the truck fell of a scrap truck ?? Am betting the Processor or PC has taken a crap.... But want it fixed .............

Your Answer

Add photo

Related Questions

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 470
#2 Tom Demyan
Tom Demyan
Reputation 280
#3 piocon
piocon
Reputation 270
View All

Related Models For Sale

Used GMC Sierra 2500HD
117 Great Deals out of 13,965 listings starting at $2,650
Used Ford F-250 Super Duty
340 Great Deals out of 46,910 listings starting at $1,895
Used Chevrolet Silverado 1500
1,677 Great Deals out of 174,518 listings starting at $1,300
Used Dodge Ram 2500
158 Great Deals out of 5,259 listings starting at $2,990
Used Ford F-150
2,240 Great Deals out of 205,781 listings starting at $1,499
Used Chevrolet Silverado 2500
6 Great Deals out of 270 listings starting at $3,900
Used GMC Sierra 1500
811 Great Deals out of 67,836 listings starting at $2,484
Used Ford F-350 Super Duty
409 Great Deals out of 26,456 listings starting at $3,000
Used Chevrolet Silverado 1500HD
18 Great Deals out of 265 listings starting at $3,985
Used Toyota Tundra
440 Great Deals out of 34,140 listings starting at $3,200
Used Dodge Ram 3500
93 Great Deals out of 2,156 listings starting at $4,999

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
4 Great Deals out of 16,023 listings starting at $24,750
2016 Chevrolet Silverado 2500HD For Sale
29 Great Deals out of 2,295 listings starting at $24,995
2015 Chevrolet Silverado 2500HD For Sale
42 Great Deals out of 1,780 listings starting at $18,950
2014 Chevrolet Silverado 2500HD For Sale
18 Great Deals out of 523 listings starting at $10,377
2013 Chevrolet Silverado 2500HD For Sale
7 Great Deals out of 943 listings starting at $7,200

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.