Vortec 6.0L coolant leak

TexanKD
20

Asked by TexanKD Jun 12, 2013 at 03:20 PM about the 2004 Chevrolet Silverado 2500HD 4 Dr LT 4WD Extended Cab SB HD

Question type: Maintenance & Repair

This is mainly a sanity check for me. I have an 04 Silverado 2500HD 4x4 with a 6.0L Vortec with 182K miles.  I replaced the original factory water pump in March of this year (2013).  No issues at all until a week ago when I found a small (about 2 inch diameter) coolant puddle under the passenger side right below the inside of the A/C motor.  I traced this leak to the heater hose\water pump connection.  My question is about the heater hose fitting that goes into the water pump.  Is it logical to assume that since this pump is only a few months old with about 3K miles on it that the pump is okay, and the heater hose(s) are causing this problem?  I thought it could be the thermostat housing but the angle of the water pump would suggest that the heater hose connection if leaking would run down hill to just below the thermostat housing and blow back from there.  I checked the housing bolts and they are still tight, the thermostat and seal were replaced at the same time the water pump was.  This little leak is driving me nuts...HELP HELP!!!

3 Answers

DavidH25
Not Active

You are insane. That has been established. (Forgive me I couldn't resist that Ok?) Actually it is not safe to assume that the pump is OK> When they rebuild them, they put bearings and impellers in, and bead blast everything to make it look good. But the reason I say this is I have bought water pumps in my "career" that have been faulty right out of the box. More than one time. The casing could be cracked, it's not like they X Ray them before shipping. That is why I say it's not safe to assume the pump is good.

2 out of 2 people think this is helpful.
TexanKD
20

Funny guy! There is nothing coming out of the weep hole to indicate that the seal, bearings or impeller is gone... it's been running fine since I put in on in March. Based on where the leak is it makes me believe that it's something in that area. The harmonic balancer and the block are dry.

1 out of 1 people think this is helpful.
TexanKD
20

Well here is the rundown. As it turned out DavidH25 was correct, the front heater hose inlet (it is a tube with an O-ring and pressed into the water pump case) had developed a leak.. I suspect it had come loose from the case due to faulty installation when it was pressed in, or had a pinched O-ring that finally just gave out. None the less I replaced the pump and it has been working great. I have put 600 miles on it so far and no problems. I bought this pump at Autozone (the most expensive one they had) and I will say they are good to their word about the warranty. They replaced it with a new one with no questions asked.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Silverado 2500HD
Looking for a Used Silverado 2500HD in your area?
CarGurus has 28,748 nationwide Silverado 2500HD listings starting at $2,995.
ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 steverinnm
steverinnm
Reputation 260
#2 Tom Demyan
Tom Demyan
Reputation 220
#3 Israel Garcia
Israel Garcia
Reputation 170
View All

Related Models For Sale

Used GMC Sierra 2500HD"
134 Great Deals out of 11,565 listings starting at $3,072
Used Ford F-250 Super Duty"
449 Great Deals out of 37,715 listings starting at $2,500
Used Chevrolet Silverado 1500"
1,561 Great Deals out of 131,842 listings starting at $1,450
Used Dodge Ram Pickup 2500"
154 Great Deals out of 4,557 listings starting at $2,900
Used Chevrolet Silverado 2500"
11 Great Deals out of 266 listings starting at $5,989
Used GMC Sierra 1500"
617 Great Deals out of 58,001 listings starting at $1,945
Used Ford F-150"
1,907 Great Deals out of 114,668 listings starting at $1,455
Used Chevrolet Silverado 1500HD"
14 Great Deals out of 253 listings starting at $3,990
Used Ford F-350 Super Duty"
448 Great Deals out of 24,135 listings starting at $2,750
Used Dodge Ram Pickup 1500"
547 Great Deals out of 11,345 listings starting at $2,000
Used Chevrolet Silverado 3500"
33 Great Deals out of 616 listings starting at $5,900
Used Toyota Tundra"
374 Great Deals out of 17,725 listings starting at $2,988

Used Cars For Sale

2015 Chevrolet Silverado 2500HD For Sale
46 Great Deals out of 21,177 listings starting at $27,849
2014 Chevrolet Silverado 2500HD For Sale
13 Great Deals out of 571 listings starting at $23,988
2013 Chevrolet Silverado 2500HD For Sale
18 Great Deals out of 1,009 listings starting at $14,995
2012 Chevrolet Silverado 2500HD For Sale
20 Great Deals out of 702 listings starting at $8,250
2011 Chevrolet Silverado 2500HD For Sale
9 Great Deals out of 908 listings starting at $8,995