Question about 1999 Chevrolet C/K 2500

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Truck wouldnt start tapped red box under hood conected to battery and it started sometimes it says reduced engine power

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Posted on Jan 02, 2017

FreeTech
  • 426 Answers

SOURCE: 04 chevy tahoe

the check engine light you are getting sounds like and electrical problem, have the battery and the alternator tested, and have autozone or the like pull the codes off for you and see if you can figure out what they are....

Posted on Jul 25, 2008

  • 1 Answer

SOURCE: 2004 chevy silverado

need to reset oil life...look at manual

Posted on Aug 02, 2008

  • 1 Answer

SOURCE: 2004 chevy silverado

The above descriptions of the connector are very good. I washed the engine compartment yesterday, and immediately started getting the reduced enginer power code on the CIC, not performance. After reading several posts, I checked the connector on my 2003 2500HD, and found that the connector was not seated well and had gotten water in it. I cleared the water and the reconnected. The cables running from the fuse box to the connector are so short, the connector is in a bind and is pulled off-center. That is why the connector wasn't seated properly. The code went away, and the performance returned. By the way, be sure to do this after pulling the negative cable on your battery.

Posted on Apr 30, 2009

  • 1509 Answers

SOURCE: no power in part of fuse box

There is a master fuse link near the battery Maxi fuses. one of them can be blown or someone took one out to fix something else. They don't blown unless the van has been in an accident the smallerfuses blow instead. You didn't state the year as oldest ones still had the old fuse wires on the battery cable where it hooks to the starter. Older vans have 3 back in the days of carboraters. Headlights all the rest and airconditioner heater. After the fuses mains are known good the ingtion switch can be bad. Dropping the collum to get access to the wires on the ingtion switch the test light will show three wires hot with the key on or a fuseable link is bad and with the key on they'll all be hot except the start wire that comes hot in start and the heater wires will go cold. all hot with the key in run or the switch is bad jumping power to a (dead fuse) may find a dead short then each dead fuse need removed add power and plug one at a time in to find the bad boy and run him out of the school with follow the wire till the pince or added haphazard repairman's wrong guess is removed. It's hard work but someone has to do it. Good luk

Posted on Aug 11, 2009

Testimonial: "yes it was i checked the ignition switch and found that when i tapped on the side of it the power came on to my fuse bank that powered my pump "

  • 1 Answer

SOURCE: Reduced power code comes up and my truck stalls.

I had the same problem, and the solution was cleaning the throttle body, it does need to be completely removed to be cleaned thoroughly. I just used some brake cleaner on a rag to clean off all the carbon deposits. A friend of mine who is a dealer tech had only seen this trouble code once, and this was the solution. So far, my light has not come back on and the truck is running alot better at idle.

Posted on Aug 14, 2009

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Polarity was reversed when jump starting vehicle installed new battery & no power to anything mechanic said fuse got blown.What fuse,where it is located & cost of it.


Hard to say without make, year, and model-but check all fuses in the power distribution box under the hood- ignition, alternator fuse, etc.-all of them, the small ones and the maxi-fuses. All fuses are pretty cheap. If you still have nothing, you may need a wiring diagram to check for fusible links that would be power distributors right off or near the battery. Fusible links work much like a fuse, and most have been replaced by maxi-fuses, but many vehicles have both. If there is a designated main fuse, it should be in the distribution block or box under the hood.

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1 Answer

I put the car in park then , I tried to start it but it wouldn't start . There's no power , then I opened the hood and I tapped the small red box thing connecting to the battery then the power went back on...


It sounds like you have a connection issue on the battery cables. The red plastic box you speak of is where the positive cable connects to the battery. If the power comes on when you tap on it then you need to lift up the red box, see that the contact points are clean and then tighten the bolt so you don't lose connectivity. Pretty simple fix.

Good luck

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I have a 1999 dodge avenger and the problem is it doesnt seem to start all the time. we drove it just fine to work and then we shut it off an it wouldnt even try to start. we found no spark and changed...


this has happened to me. find the big grey module on the drivers side under hood. this module sits right next to fuse box. have someone tap on that module while you crank engine. if car now starts,you will have to replace engine ecm which is the module you tapped on

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1 Answer

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Look for a power distribution box, under hood, sometimes close to battery area also. Usually be a heavier gauge red wire going into it.

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go down and have your alternator checked, it might be weak, causing a surge in power to the ecu, shutting the engine down, if was the battery the car wouldnt fire right back up, another thing might be the fuel filter/pump, these should be the first things to check.

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Because ur lights ar eon when u turn the ignition key doesn't necessarily mean the battery has juice. It probably does to do those things, but it probably doesn't have the cranking amps to send to the starter so that it can turn over the engine. But if the battery is good, it means that ur starter is not working properly, because u said that the engine isn't turning ove. Try tapping the starter a bit and c wut happens. Sometimes it works. If unsure, consult with an auto-electrician. This is definelty an elcetrical probelm

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Which wire did you hook up first? If you hooked up red wire first you may have took out the PCM/BCM The theft light may be flashing or on, check owners manual or call dealer to find out specific's. But check connections make sure they are tight and do not move, check battery voltage.

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The car only starts sometimes,it has a new battery and starter works fine, it seems like a loose connection but dont even know where to start. It wont turn over or do anything in less it starts? any advice...


my car want start sometime if i turn the switch it wil make one tick noise if i keep doing it it will start its not the starter its not the battier i was told to check a fuse under the hood where is it

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check the charge on the battery. then maybe your starter is out.

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