Question about 2005 Chevrolet Cavalier

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Trouble with instrument cluster and cruise control/lights

Last December, my analogue gas gage quit registering correctly. It sat on empty for about a week, then jumped to half a tank (even though I had added no fuel). After it moved to half, it would not reset to empty when the ignition was switched off. When I cranked the car again, the gage jumped to full. The next time I cranked the car, the gage went on past full, half way on around. I thought the trouble might be some water in the lines, so I added a fuel treatment. No success. Eventually the gage worked its way back down to empty, but it hasn't worked as it should since. Soon after, and only on colder nights, my speedometer would not register. After about twenty minutes of interstate driving, I have to make a series of stops. The speedometer usually begins to work after these stops. Strangely, letting the car sit and idle for five or so minutes has no effect. Next, my headlights began to jump from regular low beam to the default Daytime Running Lights. From time to time, the service light will come on. It always goes back out when the ignition is turned off. The problem with this is that I work at night and when the service light comes on, the headlights will go out if only the DRL are on. Neither of these problems occur if the high beams are on. The next problem I noticed was that when I signal to the left, the cruise control (if in use) will switch off. This does not happen on a right turn signal. Now my engine temperature gage is not working. It will not reset when the car is turned off. It has now gone past the temperature redline almost all the way around. All of the problems began or only occurred on cold or rainy nights. However, all of the electronic warning lights and the tachometer still work. Any ideas? I don't want to take this to a dealership and either get ripped a new one for them to replace a simple relay that I don't know about, or buy an all new panel only to find that this does not fix the problem.

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  • scarson_drag Nov 28, 2008

    I would greatly appreciate any help. I got pissed that not 30 minutes passed between me posting my problem and me getting an e-mail stating that if I needed a solution I could pay for it. I have already checked my fuses.

    Thanks

  • scarson_drag Nov 28, 2008

    I would greatly appreciate any help you could give me. I have already checked the fuses and they are good.

  • Anonymous Jan 22, 2009

    does chevy cavalier has a default with there tail light

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What kind of a rip off is this? We can help fix your problem for free, but if you really want a solution you're going to have to ante up $10 plus. And, by the way, if you fixed it without our help, how about telling us how you did it so that we can charge the next unfortunate soul with the same problem for the information you have provided us free of charge. Really, FixYa, THANKS FOR THE HELP.

Posted on Nov 19, 2008

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Need to know what to do about this

Posted on Nov 23, 2008

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1 Answer

2006 Chevy Colorado Truck. Gas tank filled and fuel gauge indicator dropped to 1/4 full, when truck is idling fuel gauge drops to empty and low fuel light comes on. Suggestions? Thank you.


Check and or test fuel gauge sending unit and the gauge . Videos on youtube showing how to . Also i would have the vehicle checked for DTC's - diagnostic trouble codes . You may want to think about taking to a qualified repair shop .

Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by the engine control module (ECM). The IPC receives a serial data message from the BCM indicating the fuel level percent. The fuel gage defaults to empty if:
• The ECM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of serial data communications with the BCM.
• The BCM detects a loss of serial data communications with the ECM.

DTC P0461
The fuel level sender changes resistance based on fuel level. The powertrain control module (PCM) monitors the signal circuit of the fuel level sender in order to determine fuel level. When the fuel tank is full, the sender resistance is low and the PCM senses a low signal voltage. When the fuel tank is empty, the sender resistance is high and the PCM senses a high signal voltage. The PCM uses the signal circuit of the fuel level sender in order to calculate the total remaining fuel percent in the tank. The PCM sends the fuel level percent via the class 2 serial data circuit to the instrument cluster in order to control the fuel gage. The fuel level information is also used for misfire and evaporative emission (EVAP) diagnostics.

DTC P0462 Fuel Level Sensor Circuit Low Voltage
DTC P0463 Fuel Level Sensor Circuit High Voltage

Jan 01, 2017 | 2006 Chevrolet Colorado

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My 2000 Chevy s15 Rpm and Gas Gauge is not working


I didn't see an s15 in that model year, in my database?
If the speedometer works but the tach doesn't, I think something is wrong with instrument cluster?
GM has had a problem with fuel gage sending units. The sending units are not hard wired to instrument cluster, they send signal to pcm, the pcm sends serial data to instrument cluster, telling the cluster the gage settings.
It may be possible to use different size resistors in place of the fuel level sending unit, to see if fuel gage reacts properly to different resistors, if the gage reacts properly, then I think the problem is the fuel gage sending unit.

Nov 02, 2016 | Chevrolet Cars & Trucks

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On a 99 grand am the gas gauge allways reads empty what is the color is the ground wire for the gas gauge


It's not the ground wire , the gauge grounds inside the instrument cluster .Your sending unit or the gauge it's self is bad .
Body Control System Operation
The Body Control Module (BCM) performs the following functions:
?€¢
Gauge control


?€¢
Instrument cluster indicator control


?€¢
Fuel gauge control


?€¢
Temperature gauge control


?€¢
Theft deterrent


?€¢
A/C compressor request


?€¢
A/C cooling fan


?€¢
Exterior and interior lighting control for the following lamps:


-
Daytime Running Lights (DRL)


-
Automatic lighting control


-
Fog lamps


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Interior lighting


?€¢
Battery rundown


?€¢
Chime


Gauge Control
The Body Control Module (BCM) receives Class 2 serial data messages from the Powertrain Control Module (PCM) to determine the following gauge information:
?€¢
Engine coolant temperature


?€¢
Fuel level sensing


Your best bet is to take your vehicle to a qualified repair shop !
Fuel Gage Inaccurate or Inoperative

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Select the PCM display DTCs function on the scan tool.
Does the scan tool display any DTCs?
--
YES - Go to Diagnostic Trouble Code (DTC) List (2.4L) or Diagnostic Trouble Code (DTC) List (3.4L) in Engine Controls
NO - Go to Step 3

3

With the scan tool, select Instrument Panel Cluster, Special Functions and command the fuel gauge UP.
Does the fuel gauge complete a full sweep when commanded?
--
YES - Go to Step 4
NO - Go to Step 12
  1. Turn OFF the ignition.
  2. Disconnect the fuel level sender.
  3. Connect the J 33431-C Signal Generator and Instrument Panel Tester between the signal circuit of the fuel level sender and the ground circuit of the fuel level sender.
  4. Turn ON the ignition, with the engine OFF.
  5. Important: Verify the J 33431-C resistance setting with a DMM.
  6. Set the resistance on the J 33431-C to 40 ohms.
Does the fuel gauge display at or below empty?
--
YES - Go to Step 5
NO - Go to Step 6

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1 Answer

All my gauges just quit working. car still runs fine. they done this 2 or 3 times but would always start again. this time have not come back on. turn signals and dash lights work just no gauges.


At the moment, your instrument cluster maybe faulty? Due the basic tests, try to be sure. Check for applicable trouble codes relating to instrument cluster--pcm--communication codes. Some of the national brand auto stores in this country may check codes for free, if there are any.
Check voltage and ground circuits for the instrument cluster. The sending units for gages are wired to pcm then the pcm sends serial data to instrument cluster telling instrument cluster what to do with gages. If you want to check gage sending units, that's ok.

If you have a scanner that can communicate with instrument cluster, you can get instrument cluster to do a self-test. The self-test, the instrument cluster will turn warning lamps on and off, sweep gages w/o outside data input. The instrument is considered good, if it passes that test, if not, the instrument cluster is considered faulty.

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As far as instrument cluster gages, The pcm receives a signal from specific sender unit. The pcm then sends serial data to instrument for that gage setting. As an example, the fuel level gage defaults to empty if the pcm detects a problem with sending unit or wiring. Also defaults to empty if ipc detects a problem with serial data circuit from pcm.

Can you check for applicable trouble codes? Some of the national brand auto stores will check codes for free.

If you want to check voltage and ground for instrument cluster, go ahead.
Usually with multiple issues, I just pick one and troubleshoot it. Fixing one, may or may not fix the others.

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It sounds like your Instrument Cluster has decided not to work. you can find a replacement Instrument Cluster at your Local Auto Recycling Facility (Junk Yard) for $30 for a STratus or you can go to

www.car-part.com and put in your year, make, model and order one by Distance or Price.

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SOUND LIKE THE IGNITION SWITCH IS OPEN.IT FEEDS POWER TO PCM AND INSTRUMENT CLUSTER THEN TO CRUISE CONTROL AND OTHER CIRCUITS.IF THE IGNITION FUSE IS GOOD IT HAS TO BE THE SWITCH OR A BROKEN WIRE.

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A "check gage light" typically indicates a faulty reading on one of the gages located on your instrument cluster. After starting your vehicle, observe your instrument cluster if one of the indicator needles on the instrument cluster remains all the way to the left or "pegs" out all the way to the right, it may be the cause of your fault. The exception is the coolant temperature gage it will take 10 to 15 minutes after which the needle should rise to a normal position. Correcting the "faulty gage light" will depend on which gage is malfunctioning. Once you have figured out which gage is causing the check gage light to illuminate, then we can proceed to correcting the problem causing it.

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