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

205

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 460
#2 Tom Demyan
Tom Demyan
Reputation 270
#3 piocon
piocon
Reputation 260
View All

Related Models For Sale

Used GMC Sierra 2500HD
115 Great Deals out of 14,731 listings starting at $2,650
Used Ford F-250 Super Duty
353 Great Deals out of 47,753 listings starting at $1,795
Used Chevrolet Silverado 1500
1,818 Great Deals out of 168,314 listings starting at $1,950
Used Dodge Ram 2500
135 Great Deals out of 5,332 listings starting at $2,500
Used GMC Sierra 1500
854 Great Deals out of 66,786 listings starting at $1,995
Used Ford F-150
2,315 Great Deals out of 210,527 listings starting at $1,499
Used Ford F-350 Super Duty
394 Great Deals out of 27,037 listings starting at $3,000
Used Chevrolet Silverado 2500
8 Great Deals out of 282 listings starting at $3,000
Used Chevrolet Silverado 1500HD
12 Great Deals out of 269 listings starting at $3,950
Used Toyota Tundra
517 Great Deals out of 33,555 listings starting at $3,400
Used Dodge Ram 3500
80 Great Deals out of 2,156 listings starting at $5,250

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
14,864 listings starting at $26,171
2016 Chevrolet Silverado 2500HD For Sale
26 Great Deals out of 2,675 listings starting at $25,900
2015 Chevrolet Silverado 2500HD For Sale
33 Great Deals out of 1,895 listings starting at $18,650
2014 Chevrolet Silverado 2500HD For Sale
8 Great Deals out of 523 listings starting at $10,377
2013 Chevrolet Silverado 2500HD For Sale
6 Great Deals out of 962 listings starting at $7,200