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#1
01-21-2005, 10:45 AM
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Dash Lights issue 99 Blazer LS
I have an issue with my dash lights where I was driving and all of a sudden all indicator lights light, speedometer drops from 70 to 30 etc. and as quickly as it happened, it was restored back to normal.
I was driving at 70 mph, no change in operation of motor, no codes left as I have a scan device to check the codes, all operation works fine, gauges work fine.... I have concluded that since the instrument cluster has a logic chip in it, that due to the cold or connection it just flaked out. I have owned car since new and it's happened twice in 156K... I just don't know what it could be but wondered if it has happened to others.....I don't want to replace the instrument cluster if I don't have to, but if there is something simple to check.... To give you a mental image it looked like it went through the 2-second start up routine where all the lights came, then went away.. I also had a CarChip E/X on it and it recorded no irregularities so I think the sensors / operation was all normal... Weird...any ideas would be appreciated !! Thanks 
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#2
01-21-2005, 11:28 AM
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Re: Dash Lights issue 99 Blazer LS
Sounds like a connection problem to the instrument panel.
Make sure all the connections are nice and tight and corrosion free.
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#3
01-21-2005, 11:43 AM
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Re: Dash Lights issue 99 Blazer LS
Wan't to hear an amazing coincidence... my '98 Blazer just did almost the exact same thing (was going steady 60mph instead of 70), and it was also while I had a CarChip (not EX) installed.
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#4
01-21-2005, 11:46 AM
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Re: Dash Lights issue 99 Blazer LS
From the CarChip WebSite:
General Motors Vehicles Early CarChip models may cause some or all of the dashboard lights in some General Motors vehicles to flash occasionally. To resolve this issue, update your CarChip to the latest firmware. Instructions for checking your CarChip's firmware version and downloading the CarChip firmware updater are located on our Automotive Support Page.
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#5
01-21-2005, 01:17 PM
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Re: Dash Lights issue 99 Blazer LS
Ah, sounds like we have a common problem, good to see we have a direction to go to.
Is this carchip a performance enhancing chip?
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#6
01-21-2005, 01:53 PM
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Re: Dash Lights issue 99 Blazer LS
The CarChip is a datalogger that plugs into the ALDL on cars with OBDII. It can retrieve or clear trouble codes as well as monitor driving habits (if you have a teenager you suspect may be driving a little too agressively). It'll also take a snapshot of some sensor readings when a trouble code is generated. The E/X model that TonyMazz has is a little more useful than mine in that it can be programmed to record up to 4 parameters at a time (other than speed) while you drive to help pinpoint issues with a particular component. Both hook up to a PC to download all this data, of course.
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#8
01-21-2005, 03:07 PM
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Hmmm
Hmmm....interesting...matter-of-fact I had the carchip on both times it did this....
Can you post the URL for that article...as I went to the davis products and could not find it...i'd be interested in learning more.....
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#9
01-21-2005, 03:22 PM
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Re: Dash Lights issue 99 Blazer LS
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#10
01-21-2005, 09:18 PM
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Saved me a bunch of trouble
Thank You Thank You !!! Went out to the site and upgraded my firmware on the CarChip and the PC Software...hope that helps. You saved me a bunch of trouble in dinkin around with the dash board...never even thought of the carchip...
What a great forum ......!!!!
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#11
01-21-2005, 10:58 PM
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Re: Dash Lights issue 99 Blazer LS
If the problem every happens again, I would suggest removing it before it causes permanent damage to something.
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#12
01-27-2005, 11:08 AM
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Follow up
Well as I mentioned earlier, I flashed the firmware on the CarChip thinking that it would remedy the problem....
Well it didn't I still got the flashing lights, tach shoots to zero, all the indicator lights come on....then things go back to normal...weird. There is no performance change in the car , there are no codes set in computer, I am thinking that is has to do with the compatibility with the IPC logic chip in instrument panel. Long story short...each time it has happened (3) I have had the carchip installed. I have pulled it (as suggested) and no reoccurrance of problem, nor has it ever happened in 6 years of owning truck... So BEWARE when using aCarChip
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#13
01-27-2005, 11:35 AM
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Re: Dash Lights issue 99 Blazer LS
This is an awesome forum. I was hooked after the DIY solder fix for the wiper circuit board saved me hours (of shopping) and $$$s. Bummer about the flash update not correcting the issue with the CarChip though. Have you notified the manufacturer about this? Maybe they can come up with a better fix?
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#14
01-27-2005, 02:05 PM
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Re: Follow up
Quote:
You did the right thing.
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#15
01-27-2005, 04:29 PM
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Another update....
Well I called the company and seems there are many recorded incidents of this type with CarChip E/X.
I gave them an indication that their product is under scrutiny in the Automotive Forum and they should fix it....alot of folks look at this forum... They appreciated the feed back and sent the engineers a copy of my ticket / request and will be getting a call back in 1 week informing me if there is something that can be done..... So does this company want negative press via this forum or do they want to fix the chip so others get turned on and use it to... We'll see..... Stand by.... :-)
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