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Posted on Jan 02, 2017
did you do a fuel pressure test? if you havent do it its cheep an at least you can elimanate that. if thats not an issue, then there is only two other things crank sensor, and if there is one cam sensor.
Posted on Feb 02, 2009
Your going to have to get the Jimmy scaned before youhurt the transmission, It sounds like it's on a Limp mode which can range from a tune up to a bad ground. Good luck.
Posted on Apr 05, 2009
Testimonial: "Thanks for the info. I ended up sell the jimmy and passed on the info to the buyer they also found it helpful."
i think if you checked the sparking plugs and map sensors then check your distributer its maybe not delivering the current nedded to perform the spark to some of the cylinders
Posted on May 30, 2009
It could be many things - the most common is failure of one of the wheel sensors, (Four total) one located on each wheel; that determine if the wheel is locking up (skidding) when the brake is applied - these often break or fail and must be replaced in order for the ABS to function properly - when the light is illuminated on the dash, the brakes are safe, and function as normal non-ABS brakes do. I have seen where GM ABS control units also sometimes fail and they are rather expensive to replace (unless you can find one at a salvage yard). I have also seen where sometimes "resetting" the control unit light can solve the problem as well (If it is control unit related, and not sensor related) - There is a black "box" near the brake master cylinder (under the hood in the engine compartment, on the left -drivers - side) that is positioned vertically and has about 50 wires attached to it - If you unplug this unit (you may simply unplug it, or you may also have to remove a bolt in the center of the connector that holds it in place) for about 10 minutes (You can sometimes disconnect the battery to accomplish this as well, but you'll lose your clock and radio stations and it may idle funny for a bit), then plug it back in (after 10 minutes disconnected), this will "reset" the ABS light and sometimes put out the light permanently- unless of course it is a wheel sensor failure or other failure - The wheel sensors have a specific resistance and can be tested independently if necessary - They also utilize a ring that rotates near the sensor to assist in determining movement - this ring can break as well, so a visual inspection may help you locate the problem --- ABS systems are quite advanced, and without a factory diagnostic tools, they are difficult to repair at best - They read and store trouble codes which make troubleshooting much easier if you have the right tools, so unfortunately, a trip to a trusted technician may be in order if resetting the light and visual inspection of each sensor and ring brings nothing.... and if you need to unplug each sensor and check with an ohm-meter to determine resistance, you can usually find it (resistance numbers) on the internet....Hope that helps some....Good luck.
Posted on Sep 12, 2009
Testimonial: "thank you for the info,i'll be checking all of that!"
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