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?

320

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?

6 Answers

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

10 of 10 people found this 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)~

3 of 3 people found this helpful.
320

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

1 of 1 people found this helpful.
69,315

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 of 2 people found this helpful.

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

1 of 1 people found this helpful.
10

I replaced the heat temperature sensor and the relays are all good , fans are still on , any suggestions

1 of 1 people found this helpful.

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 183,298 nationwide Silverado 1500 listings starting at $1,693.

ZIP:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,450
  • #2
    Rowefast
    Reputation
    1,960
  • #3
    Andrew Olsen
    Reputation
    1,670
View All

Related Models For Sale

Used GMC Sierra 1500
754 Great Deals out of 68,023 listings starting at $1,699
Used Ford F-150
2,234 Great Deals out of 181,370 listings starting at $1,500
Used Dodge Ram 1500
411 Great Deals out of 10,702 listings starting at $1,500
Used Chevrolet Silverado 2500HD
348 Great Deals out of 29,278 listings starting at $2,650
Used Toyota Tundra
438 Great Deals out of 33,697 listings starting at $1,999
Used Toyota Tacoma
551 Great Deals out of 42,058 listings starting at $2,999
Used Chevrolet Tahoe
626 Great Deals out of 36,240 listings starting at $1,800
Used Chevrolet Colorado
258 Great Deals out of 29,466 listings starting at $2,395
Used Ford F-250 Super Duty
330 Great Deals out of 43,471 listings starting at $1,250
Used Chevrolet Silverado 2500
6 Great Deals out of 243 listings starting at $3,995
Used Chevrolet Silverado 1500HD
9 Great Deals out of 266 listings starting at $4,300
Used Ford Mustang
759 Great Deals out of 42,755 listings starting at $1,300
Used Dodge Charger
468 Great Deals out of 27,625 listings starting at $1,650

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
322 Great Deals out of 110,536 listings starting at $20,107
2016 Chevrolet Silverado 1500 For Sale
163 Great Deals out of 6,005 listings starting at $17,995
2015 Chevrolet Silverado 1500 For Sale
270 Great Deals out of 9,042 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
356 Great Deals out of 11,852 listings starting at $9,999
2013 Chevrolet Silverado 1500 For Sale
157 Great Deals out of 5,023 listings starting at $7,974

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.