Leaking coolant

Asked by Jun 19, 2012 at 12:32 PM about the 2005 Chevrolet Silverado 2500HD

Question type: General

I have a 2005 2500 HD Diesel and it is leaking on the drivers sid of the block it is running down the aluminum casing any ideas what might be leaking      Thank for any help

2 Answers


I just put a 6.6 diesel motor in a 2003 2500HD and as I was putting the coolant in I spotted a leak what sounds like the same area, the water pump is located just under and behind the power steering pump and there are two tubes coming off of the pump. I found my leak in a gasket on the back of the pump connecting a tube that runs to the back of the motor, there is an "O" ring for a seal on the top tube. But don't rule out the fact that it could also be the water pump itself sometimes they only leak when it's running and sometimes it will only leak when it's not running because there is an inner and outer seal and it will leak out of a vent usually at the bottom of the pump just behind the pull. You will have to get a closer look the best way would be to pull down the plastic skid plate under the front of the truck and you can see right up in there. I hope this helps!

6 people found this helpful.

I had a rotten hose (3/8" I believe) under the intake on left side and I thought I had a bad head gasket. Now I have another leak somewhere:(

Your Answer:

Chevrolet Silverado 2500HD Experts

  • #1
    Steven Loeffler
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used GMC Sierra 2500HD
143 Great Deals out of 17,369 listings starting at $2,999
Used Chevrolet Silverado 1500
1,755 Great Deals out of 153,117 listings starting at $1,000
Used Ford F-250 Super Duty
487 Great Deals out of 40,366 listings starting at $2,800
Used Dodge Ram 2500
155 Great Deals out of 4,838 listings starting at $2,200
Used GMC Sierra 1500
698 Great Deals out of 60,847 listings starting at $1,395
Used Ford F-350 Super Duty
352 Great Deals out of 23,428 listings starting at $3,249
Used Ford F-150
2,230 Great Deals out of 209,288 listings starting at $1,300
Used Chevrolet Silverado 2500
211 listings starting at $4,995
Used Toyota Tundra
455 Great Deals out of 39,339 listings starting at $2,700
Used Chevrolet Silverado 1500HD
15 Great Deals out of 224 listings starting at $2,950

Used Cars For Sale

2018 Chevrolet Silverado 2500HD For Sale
10 Great Deals out of 17,694 listings starting at $24,661
2017 Chevrolet Silverado 2500HD For Sale
22 Great Deals out of 1,610 listings starting at $26,869
2016 Chevrolet Silverado 2500HD For Sale
51 Great Deals out of 1,583 listings starting at $22,300
2015 Chevrolet Silverado 2500HD For Sale
68 Great Deals out of 2,192 listings starting at $12,999
2014 Chevrolet Silverado 2500HD For Sale
14 Great Deals out of 581 listings starting at $9,950

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.