I apologize for resurrecting an ancient thread, but this post represents all of the symptoms of my issue as well as one possible solution. The circuit breaker label may well not accurately describe what are the circuit breaker actually controls. The weirdest part of the whole thing is the consistency with which the abs, security, low fuel, and air bag lights would be on with the coolant temp and fuel level at 0 simultaneously. I think a good start however would be to track down a wiring diagram and check the power and grounds going to the cluster to see if they are good to further your diagnosis. If you don't have the code you can connect a second power supply at the jumper terminals under the hood so the computer and stereo don't lose power. They would either all be on, or all off until today when I wiggled a little more vigorously. I suspected you had a control unit problem and I'm glad you were able to find it.
You might be able to find that wiring diagram here. Most of these are repaired at no charge to the customer. Conventional Wiring Diagram Signs If a line touching one more line has a black dot, it indicates the lines are attached. Hopefully not a computer problem Please or to join the conversation. Any help is greatly appreciated! This wire quite often breaks from age or does not get bolted back on if there is head work done as it is tought to get at and even harder to see. Is that the cluster causing this and is it a concern? A wiring diagram is a simplified traditional photographic representation of an electrical circuit.
I simply re-grounded it at an other location. I have, it seems, fixed the parasitic draw that was plaguing me though. If that's the case you would need to isolate that unit to be sure the problem was within it and not the result of a failure somewhere else. Reach down behind the head and feel around to find the bolt with a wire eyelet on the head and one or two black wires. Chris Well my speedometer is actin up the problem is that it will read you doing 120 mph while actually you are going 55 mph the gauge will also not return to 0 or drop below 55. If you install 14-gauge, 15-amp wiring on that circuit, you build a fire hazard as the 20-amp circuit breaker protecting that circuit might not turn off prior to the 15-amp wiring overheats.
I cleaned every ground I could find but that didn't resolve the issue. Installing this kind of receptacle on a 15-amp circuit makes it possible to possibly overload the circuit if you plug this kind of 20-amp appliance involved with it. This is especially important when replacing receptacles. How is a Wiring Diagram Different from a Schematic? Thanks, Jordan Hey Jordon I too have a 2000 silverado 4X4 and my gauge is acting up as well only My Check engine light keeps coming on along with the abs Light and Seatbelt light then they go off and then sometimes the Low Coolent light comes on, Anyone else have this problem?? These push-fit connections are notorious for loosening or failing, so professional electricians almost unanimously avoid them and only making very tight and secure screw terminal connections. But loose connections become speed bumps, restricting the flow and creating friction as well as heat. Grounding offers a safe path for stray electrical current caused by a fault or another condition in a circuit. Most standard household circuits are rated for 15 amps or 20 amps, while large-appliance circuits including for electric dryers and ranges could be rated for 30, 40, 50 amps, and up.
Just make sure that those connections are good before you unhook the battery if you choose this option. Never leave a splice or other connection exposed or unsecured. Hopefully this thread will help someone. I have a 2000, 6. Bad control units usually do that sort of thing.
I thought the instrument cluster was bad, so I looked into getting one rebuilt. I would be checking the ground wires first. Enclosures not merely protect the connections—and protect people from accidental connection with those connections—they provide means for securing conductors like electrical cables and devices. A wiring diagram usually gives information concerning the relative placement and plan of tools as well as terminals on the devices, to help in building or servicing the tool. Very loose connections can bring about arcing, in which electricity jumps with the air from one conductor to another, creating tremendous heat.
Outlet receptacles and switches are often manufactured with push-fit wire connection slots around the back, with the traditional screw-terminal connections for the sides in the device. The issue is the same as described above; abs, security, low fuel lights come on, fuel and temp indicators go to zero intermittently. I have an '01 silverado. You probably wont be able to see it, but if you put your hand between the firewall and the head you should be able to find the wires. Variety of 2004 chevy silverado instrument cluster wiring diagram. Thanks Chevy had several recalls on speedometer and speed sensor problems. It shows just how the electrical cables are interconnected and can additionally show where components as well as parts might be connected to the system.
There are tons of threads with similar issues and no resolution. Any assistance would be greatly appreciated. My question; is it possible that the bcm is the culprit if unplugging and reconnecting the cluster solves the issue temporarily. Finally, today, I noticed that if I wiggled the connector on the gauge cluster with a little force, some of the problem lights would flicker. The search for the problem led me to solving other wiring issues that were likely the cause of parasitic drain melted wires, probably shorting to ground from lazy repairs.