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3449 messages, Last post on Nov 07, 2009 at 8:55 AM
You are in the Chevrolet Blazer Forum. Your Hosts are steve_ & tidester
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'98 Chevy Blazer has error code P1870.I know this has to do with the transmission,but don't know where to start.This has something to do with the surging I'm sure. Any ideas? Thank you guys! 
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Replying to: pfeifer (Jan 06, 2006 5:29 pm) |
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Hi, I have a 98 Blazer 4.3 LT. The problem with it, is that the 4WD not working. I've checked, and found out that the switch on the dash work, the box under the RH kick panel work, the transfer case work, the vacuum actuator work (pulls the wire real strong).... So I've figured out that the problem should be in the front axle? What is the wire from the vacuum actuator connected to in the front axle? Is there something in the front axle that use to break down? Something easy fixed? Someone had that problem before? I´m quite handy, so fixing it might be simple, just want to know how it works in the axle. Someone that has had this problem before? Or know how it works in the front axle, please help... Any explode wiews of the front axle to wiew somewhere on the internet? Thanks, Magnus
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Replying to: impalacab (Dec 05, 2007 11:18 pm) |
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I recently replaced the heads on my 1997 gmc jimmy 4.3 I have no power to the cab I have power from the battery is there a fusable link that could go out I read of someone who had the same problem after replacing engine I would appreciate some help, thanks Stan
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Replying to: leoandme (Nov 30, 2007 9:58 pm) Actually, it turns out it wasn't the ignition switch after all. After hours of impotently tracing wiring, looking for that ever elusive wire short, I realized that it wasn't a shorted wire in some magical place. So after a few more hours of scouring the internet, I came to realize that it probably was related to what everyone else is having problems with... that damned electric/vacuum actuated 4 wheel drive that has caused Blazer owners everywhere nothing but headaches and empty wallets. Here's what was actually causing my #4 Gauge fuse to blow.... The electrical plug that goes from the actuator to "that black cone shaped gizmo" (or "the donkey d!ck") on the front differential. I unplugged that wire thing, and no more blown fuses! Now here's the part I don't understand though (and if anyone has an explanation, I'd be deeply ingratiated). I expected something with the 4-wheel to not work, once that plug is disconnected, but that's not the case (...yet). The lights on the 4x4 dash switch all work and correspond with whatever is engaged at the time. The 4hi and 4low seem to engage just fine when the buttons are pressed... I hear the "click" when I press one of the buttons, the actuator can be heard engaging the gears for the 4x4 button that was pressed, and in a nano-second, the second "click" can be heard inside the cab again, signaling that the 4x4 is now engaged. The 4x4 indicator lights on the dash stay lit (not reverting back to 2hi at all). Frankly, I'm scratching my head about it all. I guess if that pesky plug doesn't have any productive function (other than to blow fuses), I'll just wrap the ends up with some waterproof adhesive, zip tie the ends somewhere safe, and keep on truckin'. Any advice on what the function of that plug is, or how could it go bad but the actuator itself still be okay, would be much appreciated!
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Hello, I was hoping someone could give me a few quick tips on installing a new thermostat in my 02' Blazer. I would appreciatge any help! Thanks! |
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Replying to: leoandme (Dec 08, 2007 3:52 am) I have a 1995 Blazer 4X4 that is also blowing the #4 guage fuse. I read your post and am hoping that what you wrote will solve my problem. I am not sure exactly what the black cone shaped part is, or where it is located. Can you please email me with a picture, or a bepper location. Thanks in advance.. bradtown  everestkc.net
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| My girlfriend has a 2000 Blazer. The ABS light came on and she could not get the vehicle to go over 5-10 mph. Is there a plug to a module I could unplug? Is it possibly a fuse problem? I have not looked at the vehicle yet, so am just looking for places to start. Is the ABS System part of the EBCM module or are they separate. Can I unplug the EBCM and drive it to the shop at regular speed and still have brakes? Any suggestions are appreciated. Thanks, douger | |
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Replying to: bradtown (Dec 09, 2007 4:55 pm) Original Problem: #4 (Gauges) Fuse would blow every time I started my '96 Blazer, daytime running lights would go out, alternator would get bypassed, car ran straight off of the battery... basically, I was going nowhere... Incorrect Solution: Here are all the things I replaced in the hopes that it would solve my fuse blowing problem...But none of them were the correct solution!...alternator, ignition switch, 4WD actuator, shorted wire, loose ground wire, tumbler, etc. (NOTE: none of these were the "correct" solution to my problem, so if your #4 fuse is blowing every time you start your Blazer, I'd be willing to bet that replacing any of the afore mentioned parts won't solve your problem either.) Solution: 4WD Indicator Light Switch (or at least that's it's the technical name GM has chosen for it). (OE# 15598481) It's related to the 4x4 system and is located on the "shift cable housing" (black cone shaped object that houses the cable that engages the 4x4 when the actuator is engaged by pressing the button on your dashboard). This Indicator Light Switch looks like an electric plug, and it is located right in the area of the front axle on the driver's side of the car. Actually, the switch is on the side of the cable housing, which is bolted (with 3 bolts, in a triangular base) to the front differential. Don't worry if that all sounds confusing, because I'm no expert in clear technical explanations. So instead, I've taken some alternative measures to help explain... Here are some pictures that will hopefully help explain the location of said Indicator Light Switch better than any I attempt I can make using 1,000 words.....  (click on photo for larger size) The above picture is what it all looks like when you lay down under the front of the car with your head facing the rear of the vehicle and your feet sticking out from the front. When you're under the middle of the car and under the front axle, turn your head left (towards the driver's side) and this is what you should see.  (click on photo for larger size) The above picture is what it looks like from the front, looking towards the back of the car.  (click on photo for larger size) And finally, the above picture is of the culprit itself. The nut is rusty in the picture because that's the old (broken) one I pulled out of my truck. If you'll notice on the other pictures, the nut is a shiny, new brass color. You'll need a 7/8" box wrench to loosen the sucker, but it's not tightened too much, as the cone it's attached to is made of plastic. Bottom Line: $20 part, 10 minutes of work, and my Blazer is now fixed! And that's the entire story! I'm hoping that anyone who has a similar problem in the future will find this post useful and will also avoid wasting hours of time trying to figure it out (like I did) and/or spending obscene amounts of money on a mechanic. Good Luck & Keep on Truckin'!! Leo and me 
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