2003 Blazer Battery Problems

9 messages,  Last post on Feb 10, 2012 at 10:16 PM

You are in the Chevrolet Blazer Forum.

What is this discussion about? Chevrolet Blazer, Electrical, SUV

#6 of 9 Re: Replace starter. [duntov] by dtrevino80

Feb 23, 2009 (7:35 pm)

Replying to: duntov (Feb 23, 2009 1:13 pm)
Well like I said, I did replace the alternator Friday and battery yesterday. I am hoping to know by tomorrow whether or not this has worked. I will be sure to update and let you know how it goes. I am hoping to not have to replace the starter as I have not even had this vehicle a week and I am already at 200+ dollars in repairs. Thanks for all the help!!!

#7 of 9 Good start by duntov

Feb 24, 2009 (5:08 am)

The alternator and battery are the easiest and cheapest things to replace and those are the first things to consider, if you are going to keep the vehicle for a few more years. If those do not help your starting problems, the starter is likely the culprit.
 
Don't be too concerned about fixing a problem by the process of elimination on a vehicle with high milage. Professional auto mechanics sometimes do the same thing.......at your expense.

#8 of 9 1998 blazer battery/heater problem by gmbutkus

Jan 25, 2012 (2:59 pm)

I changed my battery and then the heat stopped working, I put some additional coolant in,just in case this was it--it wasn't and it's not the fuses either, any ideas?

#9 of 9 Re: 1998 blazer battery/heater problem [gmbutkus] by jlflemmons

Feb 10, 2012 (10:16 pm)

Replying to: gmbutkus (Jan 25, 2012 2:59 pm)
With the engine warmed up, carefully feel the two hoses going to and from the heater core. These will go through the firewall on the passenger side of the engine bay. Both hoses should be warm/hot, and the same temperature.
 
If one hose is hot, and the other noticeably cooler, the heater core is plugged up. Not an uncommon problem on the S series. Assuming there is no leaking from the heater core (check the carpet on the passengers side footwell) you can disconnect the two hoses from the heater core at the firewall, attach a length of heater hose to each side and use a pair of water hose repair ends (female side) to attach to a water hose. GENTLY run water through the core in the reverse direction and you should be able to flush the blocking sediment out of the core. Assuming the two hoses were of different temperature as described above, the hotter of the two hoses is the input side, the cooler is the return side. So, try flushing with the hose putting water into the return, and catch the water coming from the input side in a large bucket.
 
Sort of a shade-tree power backflush. Worked for me.
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