Question about 1999 Chevrolet Blazer
Replaced all vacuum lines also.
May have air trapped in the system check this as well let the engine run to normal opperating temp shut engine down feel of the heater hoses going in to the firewall are they about the same temp if one is hot and one not the heater core stoped up if both warm the problem is in the hvac system
Posted on Nov 23, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: 96 Blazer Overheating
Yes the issue is most likely an air block, jack the front of the truck up as far as you can, fill the recovery bottle and run the engine for about 10 min, then shut down and run cold water over the radiator, this should purge the air, recheck the recovery tank and refill as ness.
Posted on Oct 30, 2008
If yours has a control valve, it will be inline in a heater hose just ahead of the firewall. before taking it out make sure it has a vacuum line attached. If I remember correctly, default is heat. I hope you checked the vacuum motors on the heater box and made sure that the plenum doors are operating and not jammed while you had it out!!
Posted on Oct 06, 2009
This is a very common problem with the 94, really common with the LT1. I have done everything I can think of with my Caprice, and lets just say I don't drive it in the winter anymore.
Posted on Jul 17, 2010
Tips for a great answer:
Oct 21, 2015 | 1999 Dodge Durango
Jan 31, 2013 | 2001 Chevrolet Blazer
Aug 15, 2017 | Cars & Trucks
Oct 31, 2011 | 1997 Lincoln Continental
Apr 22, 2017 | 2002 Buick LeSabre
Aug 16, 2010 | 1998 Honda Civic
Mar 31, 2010 | 2001 Kia Spectra
Jan 05, 2010 | 2000 Chevrolet Silverado 1500
Jul 25, 2009 | 1996 Lincoln Town Car
Dec 15, 2008 | 2000 Chevrolet Blazer
65 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: