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GMC Jimmy ABS Sensor

39 messages,  Last post on Nov 16, 2009 at 3:44 PM

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What is this discussion about? GMC Jimmy, Brakes, SUV

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#22 of 39 Jimmy Engine/ABS trouble by shannong Sep 05, 2007 (5:11 pm)
On a recent trip my Jimmy started to miss really badly. Then I lost my brakes along with it. I thought that it may be losing vacuum but I cannot find any leaks anywhere. I have vacuum going to the power booster but still the brakes are hard to push and then slowly travels to the floor without being able to stop. The engine is still running erratically but seems to settle down a bit when I unplug the vacuum line going to the power booster. The vehicle will also run better when the A/C is turned off. All of the symptoms points towards a short in the wiring, vacuum leaks, ETC. Although I cannot find any problems. There are no trouble codes either. Does anyone have any ideas? I am lost.
#23 of 39 ABS Light by jimmy98 Oct 14, 2007 (5:49 pm)
Hello, Quick question about ABS light. Have a 98 Jimmy 4wd. i had new wheel hub installed a month ago, not to mention countless other parts/repairs. Well now my ABS light is on/stays on. Occasionaly, it feels as if brakes are "locking up" "grabbing" then when abs light comes on, the brakes free up. any suggestions would greatly be appreciated. thanks
#24 of 39 Re: 2001 BLAZER ABS [diablo3] by gdell Nov 20, 2007 (6:00 am)
Replying to: diablo3 (Jan 08, 2007 3:15 am) I also have a 2001 Blazer and I am having brakes problems (perhaps ABS) on the contrary with your problem, the brake pedal goes to the floor makes a dull " crank" noise like a spring getting loose and then the brakes resume the resistance. The first time it happened they have change the master cylinder and guess what, that was not the problem. This time I took to the dealer and they same that there was nothing wrong with the problem and I have tosee the problem to fix it. They also told me that it could be the sensors but not 100% sure and there is no way to know which sensor is misreading to activate the ABS at low speed when applying brakes. They told me that the sensors are very expensive 600-800 dollars each and there are also other parts involved. I have file a complaint with the NHTSA since I believe this is a manufacturing problem. We need to have everyone with a 2001 Blazer ABS problem to file a complaint https://www-odi.nhtsa.dot.gov If anyone has had or still have the problem please let me know what else to do here.
#25 of 39 abs problem by rickd00 Jan 20, 2008 (1:05 pm)
i have a 2000 gmc jimmy 2dr 4x4, i have a problem with my abs and cant quite get it figured out... maybe you guys can help, here goes. abs light on and goes off all the time. which leads me to an intermitant problem. i put it on the computer and the code that i got said it was a power failier no senors are bad the module and all are working fine... it's a power surge or power failier that is causeing the problem.. but i have no clue where to even begin to trace this problem i have checked my battery teminals and got them all cleaned. i checked all connections from the puse panel under the hood going to the abs module on the master cylinder.. where else should i look do you have a wiring diagram for the abs that you can send me to trace the wires??
#26 of 39 turn signal switch/ multi function by rickd00 Jan 20, 2008 (1:12 pm)
hey i found out something that everyone might find helpfull... my turn signal switch was triggering the flasher relay all the time so it sounded like my turn signals were on even when they were'nt. after some research i took out my multi funtion switch there is a little plate mounted on it with 4 torx srews holding it on.. once you take that off you will see all the contacts in the for the switch... all you have to do is take some dielectric grease and get it on all the contacts you can ... it wont hurt to put extra grease on there... put it all back together and put it back on... it might take a day or 2 for the grease to work all through the switch. cant say it will work for everone but it worked for me and a few people i know. it saves a ton of money if you dont mind taking the time to put grease in it. Replies to this message: iheart4wheeldr (Feb 13, 2008 7:12 pm) bruce297w (Jul 07, 2008 9:45 am)
#27 of 39 Re: turn signal switch/ multi function [rickd00] by iheart4wheeldr Feb 13, 2008 (7:12 pm)
Replying to: rickd00 (Jan 20, 2008 1:12 pm) I have a 98 jimmy in which the ABS light turned on and has stayed on as of a few days ago, with no apparent difficulty braking...does your post mean that the turn signal noise that occurs randomly and at different speeds regardless of whether i'm turning (began about 6 months ago, too cheap to have fixed) could be related to the abs light being on and may actually be something simple and electrical to fix (rather than a new set of brakes)?
#28 of 39 ABS is on all the time, kicks in even at low speeds by ron_susi Apr 17, 2008 (6:47 pm)
2001 GMC Jimmy 4x4 - ABS comes on all the time, even at very low speeds. What could be causing this? Have taken wheels off and pads have lots of life. Noticed however than wheel doesn't spin really freely, does spin but with some friction. I don't know if this has anything to do with it. By the way, the ABS light is not on. It has come on for a few minutes in the past but then turned off again. I pretty sure the wheel bearing needs replacing on the front passenger side....could that have something to do with it?
#29 of 39 abs brakes by rbonham44 Apr 27, 2008 (6:31 pm)
i have a 2000 gmc jimmyand when i push on my brake pedal at speeds under 15 mph it wants to push back and at times it seems i have to really put some pressure on it to stop all the way. if the abs light comes on i have no problem at all stopping. kinda stumped. i heard i can take the fuse out and it wouldnt do that anymore. if so will it effect my brakes in anyway. thank you for your time. Richard Replies to this message: ron_susi (Apr 30, 2008 12:31 pm) rsher0001 (Nov 16, 2009 3:44 pm)
#30 of 39 Re: abs brakes [rbonham44] by ron_susi Apr 30, 2008 (12:31 pm)
Replying to: rbonham44 (Apr 27, 2008 6:31 pm) I am having the same problem and so far what I've been able to find out is that's it's probably a faulty speed sensor. Also been told it could be a bad wire connection at the wheel or a wheel bearing. For now I went ahead and pulled the fuse (it's under the hood) and that stopped the ABS from kicking in....it DOES NOT affect the braking .... the only thing you'll notice is that your ABS and parking brake warning lights on the consol come on. hope that helps in the mean time. Please post if you find the real solution...thanks Susi
#31 of 39 ABS Brakes by crazyramb0 Jun 07, 2008 (10:08 am)
I have a 96 Blazer 4x4, everytime i push down on the brake pedal, i have to apply a ridiculous amount of pressure and they still won't work until 3 seconds goes by. Replies to this message: tidester (Jun 08, 2008 8:00 am)

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