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As long as they turn back on when the signal goes off, you're fine.
THEY ARE SUPPOSED TO STAY ON AS LONG AS THE CAR IS RUNNING.
IF YOU PUT ON THE EMERGENCY BRAKE, THEY WILL TURN OFF. I OFTEN
PUSH MY E-BRAKE ONE CLICK TO TURN THEM OFF WHILE DRIVING.
BELIEVE IT OR NOT, THE MULTI-FUNCTION SWITCH PROBABLY NEEDS REPLACED. I HAD NO BRAKE LIGHTS,OR SIGNALS. A LOT OF STRANGE
THINGS HAPPEN WHEN THIS SWITCH GOES BAD. ALMOST ALWAYS TO DO WITH SOMETHING WITH REAR LIGHTS. CHECK THE SWITCH. THEY COST
ABOUT $300.00. I FOUND NEW ONES ONLINE AND PAID ONLY$32.00.GOOD LUCK!
SHORT IS IN THE DRL, PUSH THE PARK BRAKE IN A COUPLE OR MORE CLICKS THEN SEE WHAT HAPPENS. THE DRL'S SHOULD NOT BURN WHEN VEHICLE IS STARTED. IF THE FUSE BLOWS THERE A COUPLE THINGS IT
COULD BE. YOU BOUGHT THIS VEHICLE USED.WE DON'T KNOW WHAT WAS DONE TO IT EARLIER.CHECK THE REAR OF YOUR HEADLAMPS TO SEE IF ANYONE HAS TAMPERED WITH THE WIRING. IF YOU HAVE FOG LAMPS,
UNPLUG THEM AND SEE WHAT HAPPENS.IT'SLIKELY THAT ONE OF THESE TWO MAY BE THE BROBLEM..IF NOT, TRY CONTACTING ME AGAIN AND I WILL GIVE YOU SOME INFO ABOUT ELECTRICAL PRBLEMS AND RE-CALLS,
AND ALSO TSB'S THAT ONLY GM GETS. I CAN SHOW YOU WHERE TO GO ONLINE TO GET THEM.IF MORE PEOPLE WOULD COMPLAIN ABOUT ELECTRIC PROBLEMS ODI WILL MAKE THEM HAVE A RECALL ON THIS TOO
I HOPE THIS HELPS. GOOD LUCK
I must admit I jumped to the conclusion, thinking that all the fuse boxes are the same. On my 2000 Jimmy, the Fuse# 15 is 4wd (???). In the manual it's described as:
"4WD Switch, Engine Controls (VCM, PCM, Transmission)."
You are absolutely right when you say I have no idea what has been done to the vehicle. One thing that is noticeable is stereo. But how much that can affect 4wd. Got my self Chilton, thou seams there's every important wiring diagram Except the one for 4WD????
Last time I put the fuse in, and left it idle w/o shifting into a gear, the fuse didn't blow. When I came back to it that night, put it in reverse and drove outta garage the fuse blew. Which makes me think that could be nothing happens "until" you shift and/or into a Reverse?
I was just about to start unpluggin' things tomorrow. Just not sure where to start. If I would only be able to isolate the thing that would be fantastic...
thanks again,... greatly appreciated
OR MANIFOLD. SHIFTING INTO REVERSE MAKES THE FUSE BLOW YOUMAY HAVE A GROUND IN THE REVERSE SWITCH OR THE WIRING THEREOF. HAS ANYONE PUT AFTERMARKET BULBS IN THERE? YOU KNOW THE KIND PEOPLE USE WHEN TOWING SOMETHING? HAS THE VEHICLE BEEN IN AN ACCIDENT? SOMETIMES A BODYSHOP ACCIDENTLY WILL SMASH A WIRE IN THE PEOCESS OF REPAIR. IT LOOKS TTO ME THAT YOU ARE GOING TO HAVE TO USE THE PROSESSE OF ELIMINATION IE... TAKE CARE AND TRY ON THING AT A TIME TO RULE OUT DIFFERENT POSSIBILATIES. USE A STETHOSCOPE TO FIND VACUE LEAK ALSO.I WOULD ALMOST BET THOUGH THAT YOU HAVE A GROUND IN THE WIRING AT THE TRANNY OR TRANSFER CASE. I HOPE YOU CAN FIND IT AND IF IT IS A RESULT OF A REPAIR, FIND OUT WHERE IT WAS REPAIRED AND SEE IF THEY WILL ASSIST YOU. SORRY I CAN'T PINPOINT THE PROBLEM WITHOUT SEEING THE VEHICLE.MAYBE SOMETHING I SAID WILL HELP. A VACUME LEAK WILL NOT BLOW A FUSE. GOOD LUCK
tidester, host
SUVs and Smart Shopper
a Chevrolet or GMC dealer. Ask around and find a good one. The part about it getting worse when you hit bumps almost assures me that something is shorting out.Did you buy it from a dealer or independant person? Can you contact the
person that had it before you and ask if they had problems with it? These Blazers and Jimmys have had so much go wrong in the electrical system it's almost impossible to determine the source. Sorry I can't help more but,you need to take it to a good shop because I'm sure they have ran across the same thing many times.By the way,do you want to buy a 1997 Jimmy? LOL
A poor ground can also yield may bizarre symptons.
sound when button is depressed. Is window motor gone. How do I trouble shoot the problem?
problems you have with those is that they draw a lot of power to operate. That's why there is a relay also and not just a fuse. If I remove the power accesory fuse,those same things do not work at all. I hope it is the fuse because I don't know exactly where the relay is. From 1995 to 2004 they made a lot of small changes. Your owners manual should help you find the relay if you find the fuse is good. I'm crossing my fingers and hoping it is the fuse. I hope this works for you and good luck.
This was very common on the fan blower circuit used in GM back in the '60's through 80's. In the middle of a really hot summer day, the high speed would quit working on the a/c, but all the other speeds (different fuse) would work.
model Blazer? Not a 1960 Chrysler? Just glad I could be of help and thanks again.
The same issue can occur with automatic resetting circuit breakers, such as on some headlamp circuits. The breaker will trip, and reset when it cools down. Many years ago I was called down to Houston where a prototype industrial truck was undergoing environmental testing. Seems they were tripping the breakers for the AC unit cooling the instrument cab. Current monitoring showed they were only at 80% of the circuit breaker rating. But they were testing inside a heat chamber, and the combined effect lowered the capacity of the breaker.
This was very common on GM back in 68 -76. Happened all the time when the Houston area temps went up into the 100 range. Folks would hop in their cars after work, start the car, flip the AC on high, and in about five minutes the high blower fuse would pop. Car would come to the shop and there would be nothing at all wrong with the blower. The high speed blower fuse was a separate inline fuse holder back behind the aircleaner on the firewall. We would routinely move the holder over to the low side of the AC drier and attach it there. Problem solved, the freon line would keep the fuse cool.
This isn't just a car issue, this is common to all passive circuit protection devices. They are tripped by heat caused by electrical current. Automotive and industrial fuses are rated at 25C, as is the AGC30 that was typically used on the high speed blower circuit. More than one blower motor has been changed thinking it was the cause of the blown fuses.
I am not trying to argue with anyone here, just pointing out that in my 40+ years of working on electrical systems in both automobiles and industry that there are more things than just over current that can blow a fuse. I am glad your expertise was of good use to him, and I am glad his problem is resolved. My apologies if I have offended you.
jflemmons
I'm curious. Can you elaborate?
tidester, host
SUVs and Smart Shopper
In an auto-resetting circuit breaker such as used in a headlight circuit, the same principles apply. When the temperature of the circuit breaker reaches a pre-designed point, the circuit path opens, causing a cool down. Once it cools down, it closes the current path and will repeat the cycle until the fault is corrected.
A really neat trick is to SOLDER a low current fuse into a circuit without "blowing" the fuse. Which is why Bussmann/Cooper always advises to solder inline holders before installing the fuse.
Not so much with automotive applications, but in industrial apps a poorly mounted fuse block can open a fuse through vibration.
tidester, host
SUVs and Smart Shopper
Is this an ignition switch problem or something worse?
Are all of these problems related or is it more than one problem?
I have a basic schematic set on this vehicle, let me check it and get back with you.
[edit] On the fuse issue, try turning off the cruise control switch on the stalk, and (considering it is 103 here today :surprise: ) don't turn on the heated seats. Put in a fuse and see if it pops immediately. If not, turn the switch to run and check fuse. See if the indicators in the instrument cluster come on. If still good, turn on the cruise switch. Try and isolate what function is drawing the high current.
I don't have the complete schematic available, but I believe the functions in the instrument cluster that you listed as malfunctioning all come from the BCM, and the radio has aux power that (I believe) is also supplied by the BCM for the delayed power off function. The cruise control used to be a simple system, but I am thinking it also has a tie-in to the BCM.
Try the tests I listed above and tell us what you get.
and oil pressure switch are wired so that when one goes it appears that they both
go out. As far as the other problems I don't think they are related to temp guage.However, I've been wrong before. The other problems and possibly all the
symptoms may be because of the ignition switch.Have you had it checked for trouble codes? I really don't know if I can be of any help at all. Check oil pressure switch and temp switch. Borrow a code scanner or take it to a repair shop to see
what codes (if any) show up. GM did a lot of wiring changes to that body style
between 1995 and 2004 because of electrical problems. Sorry I can't help.When you get it fixed,can you tell us what the problem(s) were? I'm curious.Thanks
Also, where can I find the Body Control Module and how can I test it?
I would look first to the ignition switch. Were you able to determine what function was blowing the fuse?
would not keep the pressure high enough to run right. It was only after I put in
a factory fuel pump/gauge assembley that I got the right amount of pressure and the guage still works fine. I'm not saying that's whats wrong with yours but, that
is what it took to fix mine. A GM mechanic friend of mine told me to put in the new GM pump
and it would fix mine,and it did! You might think about checking your fuel pressure
you should have 56 to 61lbs of pressure, I think I'd watch the mielage and guess on
the amount of fuel left in the tank instead of buying another &300 pump. Again,
it may not be the same problem I had but if it's not running exactly right and/or
your fuel pressure is below specs it is worth looking into. Sorry I can't pinpoint an
exact cause I hope this helps some.
about your problem. I will let you know what he says. I tell you, I have never seen
so much electrical problems on these Blazers and Jimmys in my life. GM has 43 technical service bullitens on them and several recalls. I'll be back...
Thanks for your patience...
I know there were major electrical issues with the 2nd generation when it came out. Sometime during this generation there were some major improvements made in the harness designs that helped. But these are still one of the early generations that had a BIG increase in complexity.
You want to see one that will really mess with your head? Check the door jamb switches. On my '02 2dr, there are no wires to them! The BCM has a remote sensor/switch inside the door that reads the latch, and turns on/off the interior lights accordingly. Bizarre.
would they put that in the door to turn off the interior lamps? I thought the switch
was fine. It worked for 50 or so years! LOL. I'm going to the Ford store and trade mine in on a new Fusion. lol
Very odd, and I don't know for sure exactly what year they did this.
That means most of the time it won't start because you only have a second before
the key is on the on position. Of course the first thing I thought of is the ignition switch. It has the high output csefi engine or OBD 11 as it's called. Remember it is a 1997 year model. My question is simple...Where is the actual ignition switch on my model? I know this will sound stupid to a lot of you guys but,stupid is as stupid does! lol. Please help.The Jimmy looks brand new and I've kept it that way. I want
to drive it again. I've even let the registration run out.(no tags) Now it just sits in one side of my garage looking pretty. If you think it's not the switch, I'll surely take any
idea and look into it. "WHERE IS MY IGNITION SWITCH?" and to think I'm a retired mechanic with 38 yearts of service! I'm anxiosly waiting for a reply.Thank you so very much.
My Jimmy's the year where you use a screwdriver to bend the spring away from 4 notches and then remove the horn (airbag). then I can get to the steering wheel and then the switch. Guess what the switch cost? I may have you send me some money! LOL 17.69. Seventeen dollars and change. Thanks friend. I'll let you know
how it goes. I also heard it was a common problem on those vehicles.Thanks again