I have a 2005 1500 silverado and the radiator fans are staying on after the truck is off and drained my battery dead. Replaced the relay but no luck there. Any suggestions?

310

Asked by Dec 28, 2013 at 08:48 PM about the 2005 Chevrolet Silverado 1500 Z71 Crew Cab 4WD

Question type: Maintenance & Repair

In addition SES indicated knock
sensor code. Had the knock sensors,
cleared codes, and SES has not turn
back on, but the cooling fan is still
draining the battery. I read some post
about Powertrain Control Module
being relate to both.

*knock sensors replaced*

Any suggestions?

5 Answers

block temperature sensor~ https://www.google.com/#q=2005+Chevrolet+Silverado+block+temperature+ sensor

8 out of 8 people think this is helpful.

scrub the main ground clean with a wirebrush, as this gets a layer of corrosion with every start...wirebrush and pliers for the lug end....wirebrush for the spot where it bolts to...put them together for restored ground potential and the modules will behave themselves then~.....with a NEW battery (if older than five)~

2 out of 2 people think this is helpful.
310

Ok, I need to clean the block temperature sensor connector, or the fan connector?

1 out of 1 people think this is helpful.
61,155

I'd check for a stuck relay. Take the handle end of a screwdriver and tap the relays that are in the underhood fuse box. If the fans stop, it's a bad relay. And yes, the cooling fans are commanded on by the PCM if the coolant temperature exceeds a certain point. Usually around 220°F or the air-conditioning is turned on. HTH. - Jim

2 out of 2 people think this is helpful.

Srvelis1....replace these items...they are cheap...test for continuity...leakage to ground with your multimeter~

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 155,210 nationwide Silverado 1500 listings starting at $1,395.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 1,830
#2 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,550
#3 Rowefast
Rowefast
Reputation 1,510
View All

Related Models For Sale

Used GMC Sierra 1500
938 Great Deals out of 62,274 listings starting at $1,395
Used Ford F-150
2,700 Great Deals out of 212,349 listings starting at $1,000
Used Dodge Ram 1500
531 Great Deals out of 12,827 listings starting at $1,995
Used Chevrolet Silverado 2500HD
326 Great Deals out of 25,711 listings starting at $2,500
Used Toyota Tundra
582 Great Deals out of 30,721 listings starting at $2,637
Used Toyota Tacoma
614 Great Deals out of 35,124 listings starting at $2,155
Used Chevrolet Tahoe
775 Great Deals out of 28,451 listings starting at $1,500
Used Chevrolet Colorado
263 Great Deals out of 19,418 listings starting at $1,995
Used Ford F-250 Super Duty
395 Great Deals out of 45,079 listings starting at $2,000
Used Chevrolet Silverado 1500HD
18 Great Deals out of 297 listings starting at $3,950
Used Chevrolet Silverado 2500
10 Great Deals out of 317 listings starting at $3,995
Used Ford Mustang
363 Great Deals out of 44,490 listings starting at $1,000
Used Chevrolet Avalanche
229 Great Deals out of 5,743 listings starting at $2,200

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
28 Great Deals out of 95,466 listings starting at $16,928
2016 Chevrolet Silverado 1500 For Sale
249 Great Deals out of 8,006 listings starting at $16,375
2015 Chevrolet Silverado 1500 For Sale
240 Great Deals out of 7,129 listings starting at $15,977
2014 Chevrolet Silverado 1500 For Sale
402 Great Deals out of 10,942 listings starting at $6,990
2013 Chevrolet Silverado 1500 For Sale
226 Great Deals out of 5,931 listings starting at $8,495