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Chevy Blazer/GMC Jimmy

511 messages,  Last post on Nov 29, 2009 at 11:19 AM

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#479 of 511 Re: HELP!!!! clunk in front end HELP!!!!!!! [jlflemmons] by gmck9 May 18, 2008 (5:31 am)
Replying to: jlflemmons (May 15, 2008 8:22 am) Good news noise is GONE!!!!!!! I picked my jimmy yesterday, and the work done at this Napa center was A-1!!!!!! He flipped the bolts around that the other mechanic put in backwards on my lower ball joints, fixed the alignment(steering wheel was cocked to 10 o'clock, and pulled to the right), and I now have the Napa upper control arm bushings in there. O.k. heres the weird thing.....when driving the car from the screwy mechanic to the good one....still the noise was there even though the new control arm bushings were in, so I'm wondering if it was from the lower ball joint bolts not being in the right way(maybe they wouldn't tighten all the way), or maybe it was from the cheap autozone crap parts?????Don't know......but all I care about is that annoying clunk is GONE!!!!!! On a different subject....through all the searching of problems....I saw that a MAJOR issue with these newer Jimmys that use dexcool is that the heater cores clog(I see that post ALOT) I'm wondering if its from everyone says DONT let dexcool get low or it will sludge up.....well, what happens to your heater core when temp switch is set to A/C or the cool setting.....it closes the valve to allow coolant to flow through the core, so in my eyes....thats the same as letting it get low, and I'm thinking thats why it sludges up in the core......from driving in summer months with the temp set to cold(coolant just trickles through the core clogging it up!!!!! IS THIS CORRECT??????????should I switch to green coolant to avoid this problem? or will it mess the gaskets up??? Replies to this message: jlflemmons (May 18, 2008 4:57 pm) gmck9 (May 19, 2008 4:18 am) mwills (Mar 07, 2009 9:50 am)
#480 of 511 Re: HELP!!!! clunk in front end HELP!!!!!!! [gmck9] by jlflemmons May 18, 2008 (4:57 pm)
Replying to: gmck9 (May 18, 2008 5:31 am) Guess what? Blazers don't have heater control valves. Coolant is always going through the core. I know, I was surprised to find out that they don't use a valve, too.   The biggest problem with dexcool it that GM was being more than optimistic with the life span. If changed every 5 yrs, 60K miles, it doesn't seem to sludge up. But if you let it get low and get a lot of air in the system, problems.   And never, ever let someone "top it off" with the green stuff. If this happens, the whole cooling system must be extensively flushed. The two chemistries just do not play together at all. Replies to this message: gmck9 (May 19, 2008 4:18 am)
#481 of 511 Re: HELP!!!! clunk in front end HELP!!!!!!! [jlflemmons] by gmck9 May 19, 2008 (4:18 am)
Replying to: jlflemmons (May 18, 2008 4:57 pm) Ya, I read that the chemicals that control corrosion when mixed(dexcool and the green coolant) will break each other down, so then there will be no corrosion defense. Also I read that there is an uncertainty about the gaskets breaking down when mixed or when switching from types of coolant. So I guess I'll just change my coolant like NOW ...I'm sure the previous owners haven't done ANYTHING to this vehicle except put gas in it and drive it.
#482 of 511 Re: GMC Jimmy ECM Fuse [gmck9] by darren04 May 19, 2008 (6:11 am)
Replying to: gmck9 (May 17, 2008 6:53 pm) So finally after way to long going through wires I have found the short. It was the plug going into the coil pack under the hood. The problem is still there because I'm not sure if its the plug itself or the actual coil pack. But thanks for all the help and ideas where too look. Now I just need that new plug and or coil pack, probably a good idea to replace both is what I'm thinking.   Thanks,   Darren
#483 of 511 Re: ABS/BRAKE LIGHT 2001Jimmy [ktsmith] by kcd2006 Jul 22, 2008 (3:27 pm)
Replying to: ktsmith (Oct 25, 2005 12:39 pm) First run diagnostic of ABS sensor for each tire. It may save you money! If one sensor is off replace it. Our repair shop did this to find the Front Pass. side sensor reading 0 at 5m/h. Our hub was fine, the sensor was bad. Called parts store was told that sensor was only available with aftermarket hub for $300. Called GM dealer sensor only $83.
#484 of 511 one thing leads to another . . . by isoia Aug 12, 2008 (10:35 pm)
Always seem to have problems after going through the carwash. Just replaced the fuel pump, broke down on the freeway, ignition wasn't making an electrical connection so my key was stuck, and I had absolutely no power. The problem was I needed to clean the two-way fuse underneath the battery. It ran beautifully since then. NOW . . . I have a problem with the fuel filter! Again, the problem arises after a trip to the carwash. I've replaced the fuel filter, but the hose connecting to the top of the filter is partly busted, and doesn't snap into place with the new filter. It is the RIGHT part with the right accessories. The previous owner used two O-Rings for the filter, but I've decided to use just one, and it's left me with a major fuel leak. Has anyone encountered this problem? Any suggestions, before having to replace the entire fuel line?   Thanks, iSOiA
#486 of 511 2000 GMC Jimmy by isoia Aug 12, 2008 (11:58 pm)
Always seem to have problems after going through the carwash. Just replaced the fuel pump, broke down on the freeway, ignition wasn't making an electrical connection so my key was stuck, and I had absolutely no power. The problem was I needed to clean the two-way fuse underneath the battery. It ran beautifully since then. NOW . . . I have a problem with the fuel filter! Again, the problem arises after a trip to the carwash. I've replaced the fuel filter, but the hose connecting to the top of the filter is partly busted, and doesn't snap into place with the new filter. It is the RIGHT part with the right accessories. The previous owner used two O-Rings for the filter, but I've decided to use just one, and it's left me with a major fuel leak. Has anyone encountered this problem? Any suggestions, before having to replace the entire fuel line?   Thanks, iSOiA
#487 of 511 service 4wd light on? by randypape Sep 30, 2008 (1:54 pm)
hello, as friend's 1999 gmc jimmy is giving him problems with the 4wd unit. he was told his electronic transfer case computer module is bad $550.00 and the actuator . is there a tell tale way of checking this out ? this shop wants over $900.00 to fix it. thanks Randy
#488 of 511 Re: power seats please help !!!! [mrakes] by Beckyj636 Dec 03, 2008 (12:43 pm)
Replying to: mrakes (Dec 05, 2005 6:52 pm) Where is this relay?   My power locks work, BUT neither power seat does.   I have the 96 Blazer

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