Question about 2001 Chevrolet Blazer

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Is the heater core on a 2001 blazer inside or outside the vehical

2001 2 door 4x4

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In side under the dash

Posted on Jan 28, 2009

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I have a 2001 chevy blazer 4wd when driving my vehicle I start to smell as if my car is starting to overheat my gages are showing normal and there are no visible signs of overheating my windshield and


If you smell steam/water/antifreeze inside the vehicle, then most likely you have a heater core issue. If it is more 'overheating' smell outside of the vehicle, it could be overflow container leaking on hot parts, leaking hose, radiator leak, etc.

Jan 26, 2015 | 2001 Chevrolet Blazer

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2001 blazer driver door will not close. what do I do?


Probably stuck linkage on either the inside or outside door handle. Try spraying the latch mechanism on the end of the of the door with some WD40 and see if it will operate properly. If not, you'll probably have to pull of the door's inside panel and inspect/lubricate the linkage to both the outside and inside door handles.

Sep 29, 2013 | 2001 Chevrolet Blazer

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I need to get a diagram of the fuse box for a 2001 chevy blazer so I can determine which fuse is for the radio


the diagram is on the panels that cover the fuses take off the fuse door on the inside, driver side on the dash board you have to open the door and look inside on the other side of the door and its the same with the relays in the engine compartment but the radio shouldnt be under the hood i know i have a blazer

Apr 02, 2010 | 2001 Chevrolet Blazer

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2001 chevy blazer-water under the driver seat and back floorboard,causing the driver seat to quit working.I have no idea where the water came from.Any ideas?


if it has a back heater either a water line to the heater core broke or the heater core for te back heater sprung a leak probabley the heater core on the back heater replace either the hose or the back heater core whatever is leaking.

Jul 28, 2009 | 2001 Chevrolet Blazer

3 Answers

No Heat! 1999 chevy blzr lt 4.3 radiator full, blower works,


Your '99 Blazer does not have a water valve. Just a temp. blend door. In other words, hot water should be flowing through the core at all times. Like the other techs said, make sure you are getting the whole system full of coolant. You might even try disconnecting one hose, and pouring water into the heater core itself. On most of these year models, if you listen, you can hear the rush of water through the core when you lightly rev the eng. I have replaced 3 heater cores just last year on '96-'99 Blazers. They clog easily. YOu can blow or flow water through them, but if they don't flow freely, I mean without any restriction whatsoever, they will not get as hot as you want. The thing is tiny!

Here's an easy test: Run engine until temp gauge reaches normal: around 180-200 degrees. Reach back to the firewall and grab both heater core hoses. Are they both about the same temp. and HOT? THey should be. If one is much warmer than the other. You are clogged enough to suffer in the winter. And from what you said: "Brrrrrr" You are getting poor performance out of your heater.

BE sure to check that the blend door is working. Is it cool when you set temp to cool? Blazers go through way more heater cores than they do blend doors, so I'm betting your core is either empty, or clogged. TaterTodd

Jan 25, 2009 | 1999 Chevrolet Blazer

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Not sure how to get to Heater Core in 01 Chevy Blazer


Their is nothing either quick or easy to changeing a heater core. Most have to have all of the duct work from the AC and heater under the dash removed. The two hoses for the outside of the cowling to the core have to be removed. Some even have to have the floor board matts removed to have enough clearance  to take out the heater core. A really rough job. 

Jan 06, 2009 | 2001 Chevrolet Blazer

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Antifreeze smell and smoke coming out of vents


You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.

Dec 28, 2008 | 2001 Chevrolet Blazer

3 Answers

No Heat for 2001 Chevy Blazer


what about electric system, is it connected could me a loose wire that disconnected on ur heater, check on that

Oct 30, 2008 | 2001 Chevrolet Blazer

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