Last post on Jul 16, 2013 at 4:58 PM
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Chevrolet Blazer, GMC Jimmy, SUV
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#2573 of 3676 Re: 97 Jimmy - No speedo, won't shift, ABS light [repairdog]
Aug 04, 2006 (8:44 pm)
Repairdog - I'm taking your advice to replace the ignition module first. I searched all posts & the web, but couldn't find instructions or pics on the replacement process. I have the column exposed but I can't figure out which component is the ignition module. I bought a new module from Autozone, but I don't see anything like it anywhere around the steering column or under dash area. On my vehicle, there is a large black rectange box with a wire loom just below the key tumbler, but I can't figure out how to remove it. Here's a link that shows a pic of the ignition module that I got from Autozone. Is this the right component for my 1997 GMC S-15 Jimmy 4wd 4.3L?
#2574 of 3676 Re: Blazer Air conditioning cold-hot-cold [efk4755]
Aug 04, 2006 (8:50 pm)
I just had the EXACT same proble with my '98 GMC Jimmy, and all it was was a relay that needed to be replaced. This was found out AFTER some control switch in the dash had been replaced (didn't fix it) and on the third time back to the repair shop. After replacing the relay my air has been working fine ever since.
#2576 of 3676 Re: 97 Jimmy - No speedo, won't shift, ABS light [repairdog]
Aug 05, 2006 (8:27 am)
Thanks for the pic. Almost there, but I can't get to the top torx fastener because the top steering wheel cover is in the way. The top steering wheel cover is loose, but I can't remove it because it's molded behind the key switch cap. Does the plastic key switch cap come off the ignition switch? If yes, how? Does it just pry off?
#2577 of 3676 Re: 97 Jimmy - No speedo, won't shift, ABS light [repairdog]
Aug 05, 2006 (8:45 am)
More info that might help diagnose my problem. I just noticed the trip meter & odometer are not working. Does this indicate that it's a mechanical problem instead of an electrical problem? There's a plastic nosecone on the front passenger side of the transfer case that has a wire loom and a cable attachment. Could this be the unit that senses the speed and sends signals? Should I focus on this instead of the ignition switch module?
#2578 of 3676 Re: Strange Noise While turning [flryite]
Aug 05, 2006 (3:42 pm)
Glad it all turned out ok. Love the sound of "Nothing" don't you?
#2579 of 3676 Re: 97 Jimmy - No speedo, won't shift, ABS light [repairdog]
Aug 05, 2006 (4:19 pm)
Mystery solved. There was a broken vacuum line that runs from under the battery tray in the front right corner (couldn't see what it attached to) back to the transmission. It was pure luck that I found it.
I was having trouble replacing the ignition module. Everything was removed except a stubborn wire connector above the key switch. Is there a special locking connector? I took a break and was scoping out the transmission speed sensor when I noticed the broken vacuum line by the exhaust headers. I spliced in a new piece of vacuum line, reconnected the original ignition switch module and took it for a test drive. Speedo is working, shifts fine and no ABS light. In fact, it had been running sluggish before and now it seems peppier...but maybe I'm just happy that it's running again.
Now I just need to reassemble the steering column & lower dash!
#2580 of 3676 Re: 97 Jimmy - No speedo, won't shift, ABS light [pro1600]
Aug 06, 2006 (3:16 am)
That vac line to under the battery tray is the front axle coupler actuator. Also see if the feed end from the intake is rotted and over to the reservior in the drivers side fender. Is 4wd working OK - probably wasn't before.
Found this on the white connector:
"For the small white connector from the top of the metal, key tumbler, rotate the switch towards the passenger seat to remove. This gets the small wires out of the way so you can get to the upper left fastener. Uses reverse Torx fasteners E series to hold the switch in."
#2581 of 3676 2000 Jimmy Front Tire? noise
Jul 31, 2006 (11:23 am)
I had new Michelin tires put on my 2000 Jimmy about a year ago and started noticing what I thought was loud tire noise. After three tire rotations and balancing and two front end alignment the noise was so loud I could barely hear my stereo so they ruled the tires defective and gave me brand new Michelinís but the noise is still there? It starts at 5mph and increases from there. I put the car in neutral while going 40mph and the noise is still there. Apply a little pressure on the brakes, noise still there. The only time it goes down is when I turn to the left, but not the right. Jacked the back end up and started the engine and put it in gear at 40mph, no noise. Jacked up the front, did not pull the tires off but there appears to be no slack in the bearings
#2582 of 3676 Re: 2000 Jimmy Front Tire? noise [jhighland]
Aug 09, 2006 (2:24 am)
Did not see this post, sorry - if everyone would post in the main section I try and read it daily.
Sealed 1 piece hubs are most likely the reason - jack the front end up and spin them - if you hear or feel any grating/grinding thats it. 4wd need to jack up under the
lower control arm so the CV axle will rotate so be careful and it requires a good floorjack.