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Chevy Blazer GMC Jimmy Maintenance and Repair

3451 messages,  Last post on Dec 05, 2009 at 8:12 PM

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What is this discussion about? Chevrolet Blazer, GMC Jimmy, SUV

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#3237 of 3451 Re: water pump removal [mwolf9000] by johnss10 Jul 12, 2008 (1:50 pm)
Replying to: mwolf9000 (Jul 08, 2008 1:03 pm) The fan and clutch come off as an assembly, This assembly screws onto the water pump with left-hand threads (reverse of normal) so that is tightens as the engine runs. There is a special open end wrench for this(I foprget the size) but it can be rented at many parts stores. Put it on the nut and whack it with a big hammer, then the whole thing screws off.
#3238 of 3451 Re: Blower Directional Issues [pawlakjl] by johnss10 Jul 12, 2008 (2:03 pm)
Replying to: pawlakjl (Apr 14, 2008 9:07 pm) The heater core replacement isn't hard, just really time consuming, like all day, or maybe 2 days. Chiltons or one of the other repair books have directions. Lots of screws to keep track of.
#3239 of 3451 Re: Spark Plugs [79blazer] by johnss10 Jul 12, 2008 (2:34 pm)
Replying to: 79blazer (Feb 09, 2008 2:11 pm) When you do this (or get it done) buy the best heater core you cna get, like the Delco one. The labor to replace a cheap core again will more than offset the extra cost of the core.   Also, a mix of orange and green coolant will contribute to this, as well as leaking water pump seals. The seals in the water punp were changed to be compatible with the Dexcool, not so compatible with the green stuff.    Use the Dexcool ( orange stuff) but be sure to replace it completely no more than every three years.
#3240 of 3451 Re: 2000 Chevy Blazer - Radio short and dead battery [klupammo] by johnss10 Jul 12, 2008 (3:00 pm)
Replying to: klupammo (Dec 12, 2007 9:12 am) One thing to check is the battery cable connection at the battery. I had a situation where either the bolt in the cable was too long or the hole in the battery was too shallow. Either way , the battery cable wouldn't tighten down correctly. I put a washer under the battery cable bolt, then put the cable on the battery and tightened the connection. No more problems. Another battery wold probably also fix it, but the washer was cheaper.
#3241 of 3451 Re: Blazer Air conditioning cold-hot-cold [bensch] by johnss10 Jul 12, 2008 (4:19 pm)
Replying to: bensch (Oct 03, 2006 2:36 pm) It's supposed to work this way. The purpose is to assist with the defog of the interior of the windshield with dry, de-humidified air that is created by the A/C. Not so important in AZ, but really helpful in the humid southeast.
#3242 of 3451 Re: water pump removal [mwolf9000] by quantumtouchfl Jul 14, 2008 (7:20 am)
Replying to: mwolf9000 (Jul 08, 2008 1:03 pm) The fan/clutch assembly comes off the water pump together. Do not mess with the spring. It takes a special tool set to loosen and remove this assembly... unless you are very creative with your tools. When you put the assembly back together... do not tighten excessively... just a tweek... and use plenty of anti-sieze on the treads of the pump and the fan/clutch assembly... this way... the next time you need to remove... you only need an adjustable wrench to loosen the nut... the belt should be tight enoutg to hold the water pump from turning.   Take care
#3243 of 3451 Re: Need help - Ignition Issue?? [jpmccr] by jlflemmons Jul 14, 2008 (9:48 am)
Replying to: jpmccr (Jul 12, 2008 1:44 pm) Two things that can kill a weak battery are extreme cold and extreme heat. I just replaced the battery in my '02. It had shown no problems at all until last week when I turned the key, it started to crank, and then stone dead.   There are six cells in a 12V battery, approx 2.2V each. When you measure a battery and get 10.4ish volts, two of the cells have shorted. In my case, I measured 5.6 volts, which basically means the guts came apart in the battery.   Now, boys and girls, here's a neat trick. If you get caught somewhere with no jumpers, turn on the lights and note how bright they are. If very bright, but go out when you turn the key, the battery has a partial short. If the lights are just dim and go dimmer when you turn the key to start, the battery has run down, possibly from a weak or failed alternator.   But for the big trick, if the battery has been working fine and suddenly did a face plant, find a wrench and loosen the battery anchor. I know everyone here always has the battery anchored down, right? Anyway, once the battery is loose, lift it about an inch or so and drop it. Don't get the goo from the battery on your clothes, unless you really like the grunge look.   Dropping the battery like this can dislodge the pieces of lead plate that have shorted and give you another start. This is a great trick, and I have used it successfully several times. Now, it doesn't fix the battery, you are still going to shell out for a new one, but it can get you to the parts house to do so.   Jim
#3244 of 3451 Re: 1993 Chevrolet S10 Blazer dies at an idel [jstamey] by 380kmiles Jul 19, 2008 (4:03 pm)
Replying to: jstamey (Jan 31, 2008 2:50 pm) have you considered THE CATALYTIC CONVERTER ?? I HAD THAT PROBLEM..RAN FINE UNTIL THE TRUCK WOULD WARM UP ... then i would have to wait until the car cooled down a bit and it would be ok until another 5 miles or so...replaced the catalytic converter and that took care of the problem...
#3245 of 3451 4X4 Troubles by sam1969 Jul 30, 2008 (11:10 am)
I have a 2001 Chevy Blazer, it keeps locking itself into 4 Lo. I put it back into 2 HI but today, it locked itself into 4 Lo and wouldn't come out. The Service 4WD light is on and my mechanic kept pushing the buttons on the dash until he got it into 2 Hi then he unplugged the 4X4 pushbutton switch on the dash. Is this a costly item to replace???
#3246 of 3451 4wd/2wd problem by james1000 Aug 01, 2008 (3:40 pm)
My 1998 Blazer has problems switching from 2wd to 4wd. When the 2wd light is on I can switch to 4wd sometimes. The 2wd had switched to 4wd by itself when starting the car. When this happens the buttons stop working and the car is stuck in 4wd. The lights are unpredictable, sometimes on sometimes off, they change while I'm driving. I've been told to disconnect the battery, ground the cables, reconnect the battery if I push the buttons and nothing happens. Most of the time this works, but you can emagine the headache this is! I'm looking for a fix that doesn't require several failed attempts at finding the right solution. We all know how expensive and time consuming it is to keep guessing at what the problem is. Anybody had this problem?

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