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10-03-2016, 07:39 PM | #1 | |
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1998 gmc yukon
I have a coolant leak that i thought was the water pump. After replacing it I found out that I was wrong. As I was filling the radiator back up with coolant after replacing the pump, I got about 1 1/2 gal. of coolant in and it started pouring out what seems to be from a line running back towards the trans on the driver side. Can anyone help me with what this line is or maybe is?
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10-03-2016, 10:09 PM | #2 | |
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Re: 1998 gmc yukon
If you have a rear heater option (controls for heat in back seat?) then it is probably the line that runs to the rear heater core- that has corroded through...and needs replaced.
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Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles- |
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10-06-2016, 11:30 AM | #3 | |
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Re: 1998 gmc yukon
Agree, leak somewhere going back to rear heater core. I'm in Arizona, and on my 1994 Suburban I had such leak on passenger side, underneath the running board, one of those wonderful GM proprietary fittings. Since I really did not need rear heat, I went to O'Reilly and asked to walk through their molded heater hoses; found a U-shaped one that went on with regular hose clamps and bypassed the rear system, worked fine.
I sold that Suburban in 2010 so not sure I could dig up that part number readily though. |
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10-06-2016, 05:34 PM | #4 |
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Re: 1998 gmc yukon
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10-06-2016, 05:35 PM | #5 | ||
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Re: 1998 gmc yukon
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