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Pickups Chevrolet S-10 & GMC S15 Sonoma Chevy S10 - GMC S15 and Sonoma Climate Control
57 messages, Last post on Oct 29, 2009 at 8:11 PM
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I am trying to replace the heater core in my 2000 S-Blazer. I got the dash out and the heater/ventilation unit loose except for what appear to be 2 bolts coming through from the engine side of the firewall at the bottom. I am working from a Haynes manual, but there is no mention of these bolts. If I am right, the only recourse is to depressurize the A/C system & remove the evaporator to get to these 2 bolts. Seems ridiculous to have to do this to replace a heater core. Looking for any help or advice that might be out there. Thanks
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Replying to: chuk (Feb 16, 2007 8:02 pm) Finally determined that you have to go in through the right wheel well -- remove the wheel and wheel well liner (meaning you have to pull the battery, powertrain ECM, and the coolant reservoir. Once all that is out of the way, you can get to the 2 studs coming through the firewall, remove the nuts, and proceed. |
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I have a '98 Sonoma and am having heater problems. The heater only blows cold air. I have replaced the thermostat and the switches, but it still only blows cold air. The coolant level is good and the core isn't leaking. What can I do? Any suggestions?
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Replying to: mike182 (Feb 09, 2007 1:41 pm) When the truck is well warm - shut it down, open the hood - and see if you can feel if the heater hoses going to/from the heater core are BOTH hot ?? If only one is - Check to see if you have a vacuum run shut off in one of the lines - and see if it's open allowing flow... Could be a bad valve - or - vacuum not getting to the the valve (i.e. cracked vacuum hose ??) Otherwise - it's possible that the core is plugged - or perhaps even air bound ??? Just a couple thoughts ... |
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I also have a heater problem. I have coolant smell in the cab. I am trying to replace the heater core in my 2000 S-Blazer. I got the dash out and the heater/ventilation unit loose except for what appear to be 2 bolts coming through from the engine side of the firewall at the bottom. I am working from a Haynes manual, but there is no mention of these bolts. If I am right, the only recourse is to depressurize the A/C system & remove the evaporator to get to these 2 bolts. Seems ridiculous to have to do this to replace a heater core. Looking for any help or advice that might be out there. Thanks
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Replying to: chuk (Feb 16, 2007 7:48 pm) Finally determined that you have to go in through the right wheel well -- remove the wheel and wheel well liner (meaning you have to pull the battery, powertrain ECM, and the coolant reservoir. Once all that is out of the way, you can get to the 2 studs coming through the firewall, remove the nuts, and proceed.
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Replying to: chuk (Mar 13, 2007 6:42 pm) |
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Replying to: chuk (Mar 13, 2007 6:42 pm)
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Replying to: steel24 (Mar 24, 2007 4:01 pm) There is a mention of studs to remove, never did the job so not sure what they are talking about. The GM SI for heater core replace is long and drawn out, like the job I guess.
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