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Old 03-01-2010, 09:55 PM
CF Active Member
1998 Chevrolet C/K 2500
Join Date: Aug 2009
Location: Raleigh NC
Posts: 138
Default water leak into heater blower motor

Hi, my 98 C2500,5.7 Vortec extended cab has a water leak into the heater blower motor. when the truck sits and it rains, water finds it's way into the blower housing. Anyone have any idea where this might be coming from??

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Old 03-02-2010, 03:11 PM
CF Junior Member
Join Date: Oct 2009
Posts: 59

Sure it's not anti-freeze? Does it have a "sweet" smell? Sounds like a leaky heater core to me. Check your radiator fluid level.
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Old 03-02-2010, 03:19 PM
CF Beginner
Join Date: Jan 2006
Location: Digital Dogpatch
Posts: 14

if leaf debris has clogged the drain holes in your fresh air intake, it will run in that area of the cab.
99 Tahoe, Wh/Gld, 5.7L, 4wd, 4dr, Road Warrior
97 K2500, Wh, 5.7L, man, reg cab, long bed, Son's truck
05 Monte Carlo LS w/ everything but supercharger, White, 3.8L, Missus wheels
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Old 03-02-2010, 07:38 PM
MDTAHOE's Avatar
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Professional Mechanic
Join Date: Nov 2008
Location: Bowie, MD
Posts: 2,955

Remove the wiper arms and then the cowl panel, you will most likely find crud in there causing water to go in to the box.
ASE Master Tech, L1 Advance Engine Performance certified
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Old 03-02-2010, 08:37 PM
CF Active Member
1998 Chevrolet C/K 2500
Join Date: Aug 2009
Location: Raleigh NC
Posts: 138

@ rispin....its not antifreeze...just water. it only happen after it rains but thank you....

Last edited by usmarine0905; 03-02-2010 at 08:43 PM.
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Old 03-02-2010, 08:39 PM
CF Active Member
1998 Chevrolet C/K 2500
Join Date: Aug 2009
Location: Raleigh NC
Posts: 138

@ MDTAHOE.....and RODEHARD....Thank you I will check that out this weekend. Also is it difficult to replace the blower motor assy, its started sqelling very baddly??
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Old 03-02-2010, 08:39 PM

1996, 1999, 2006, blower, box, chevy, clogged, colorado, core, heater, leak, leaking, motor, suburban, tahoe, water

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