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Dim headlights. Dimming headlights are one of the most common signs of a bad alternator in the Chevy Silverado. Dim headlights indicate that the alternator can’t keep up with the energy request for the lights. As your Silverado begins to eat through the voltage stored in the battery, the headlights will begin to fade.The distributor contains a camshaft position sensor (CMP), but a bad CMP would not prevent starting. To diagnose Chevy Silverado won't start conditions with the 4.3 engine, start by checking for good fuel pressure. Then check for spark. If you don't see spark, check for pulsed ground to the IGN coil while cranking.1,220. Asked by Jaidenspapa Jan 07, 2014 at 12:42 PM about the 2003 Chevrolet Silverado 1500 LS Extended Cab LB 4WD. Question type: Maintenance & Repair. I am having issues with my 2003 Silverado. it started out with the abs and parking brake light flashing with the audible chime. this happened briefly and intermittently. it progressed from ...The Silverado fuel tank pressure sensor or the one in any vehicle for that matter will inform the driver of the leak. It does this by illuminating the check engine light. The fuel tank pressure sensor can do so as it is connected to the vehicle's ECU. The check engine light is designed to be triggered by several important issues, but an OBD ...Step 1 – Check fuses and wiring. If any accessories have been added like a remote start or aftermarket sound equipment, the wiring may have been damaged or compromised. Sometimes, you have to remove them. Gauges that are not working could mean a faulty ignition switch. This has been an issue on this truck series.Stage 1: Vibrations. The most noticeable symptom of a motor mount that is going bad is vibration. That is, more vibration than you would typically feel when you are driving your Silverado. You'll know when it's happening. It may not necessarily feel like the vehicle is going to rattle apart, but it's very noticeable.If you have a weak spark, you may be dealing with a: bad spark plug wire. bad distributor cap or rotor. faulty ignition wire or coil. ignition module or ignition driver in the powertrain control module (PCM) bad coil-on-plug coil. depending on your ignition system configuration. Consult your vehicle repair manual.Dec 3, 2018 · Updated on 12/03/18. There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. When the TCC solenoid receives a signal from the engine control module (ECM), it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve ...1. Rough Idle. One of the first symptoms that a faulty canister purge valve may produce is a rough idle. In this case, you will notice the car running inconsistently while stopped or driving at low speeds. If the canister purge valve fails and sticks open, it will create a vacuum leak that can affect the engine idle speed and quality.Tow Master. 24781 posts · Joined 2006. #2 · Sep 28, 2008. Hmmm the mpg loss and grey smoke would go towards injectors but I cant think of what would cause the strange shift patterns or the fan is really unusual. You'll definatly have to take it in and get the injectors looked at! Jason.The symptoms listed below can all be caused by inadequate fuel supply to the engine: Rough starts or rough idle. Engine sputtering during acceleration. Loss of power output. Stumbling at higher RPMs. Unable to maintain highway speeds. Louder than normal whining or humming coming from the fuel tank.Nomad Foods Ltd. (NOMD) shares could roam to higher ground in the coming months, as its charts indicate that buyers of the packaged foods company have been more aggressive of late....This pressure comes in the form of power steering fluid, which gets pumped from the reservoir into the steering gear as needed. There are up to 5 symptoms of a bad or failing power steering pump, so if you notice the following, have the pump inspected by a professional mechanic as soon as possible: 1. Whining Noise While Turning the Wheel.Feb 27, 2023 · Here is a more detailed list of the signs of a bad or failing coolant temperature sensor to look for: 1. Check Engine Light. One of the first signs of all coolant temperature sensor symptoms you will probably notice is that the check engine light will show up on your dashboard. If the computer detects any problem with the sensor’s circuit, it ...Problems with the ground circuits to headlights can cause them to dim or not operate at all. The ground circuit provides a path for the electricity from the headlight to return to ...DMAXchris. 15991 posts · Joined 2008. #5 · Apr 27, 2011. Bad/Sloppy/Flared shifting is a sign of a clogged filter. The truck may also be laggy and not pull very hard in the upper rpm range. x1,000 on sticking with ACDelco or Racor. Mine gets changed every 8k no matter what. 06 LBZ EC/LB 4x4.65 posts · Joined 2014. #1 · Sep 22, 2018. Being trying to figure this one out for awhile. It smells like a fuel station in my driveway, very strong fuel smell around the drivers side. Also have code P0442 randomly pop up. Have replaced the evap canister hose & filter, sealed around fuel fill nozzle and just got a new fuel cap today.Refer to the above illustration to determine where the ground is located on the vehicle (1). Remove all rust from the ground terminal, the cylinder head and the retaining nut or bolt. Position the main engine wiring harness ground terminal and install the nut or bolt. Tighten the retaining nut or bolt to 16 N·m (12 lb ft).The FTP sensor is normally placed on top or inside the gas tank. Its primary function is to detect the pressure in the fuel system and enhance fuel economy. If it fails, it’ll decrease the amount of gas in the combustion chamber. This can cause engine stalling, weak acceleration, bad gas mileage, and hard starting.The hesitation of the engine is a common symptom of a clogged fuel filter. This causes an abnormal fuel flow to your car engine, which results in abnormal engine combustion and reduced engine power. Note that a clogged fuel filter has the ability to cause an engine to hesitate or stumble during acceleration. Having Strong Odors.

The voltage should be between 13.5 and 14.8 volts with the engine running. Switch on the accessories in your Silverado 1500, for example, headlights, AC fan at full speed, and interior lights. The voltage should remain around 14 volts. If it drops and remain below 13.5 volts, it indicates a problem with the current supply from the alternator.Normally, shutting the truck off and turning it back on would fix it. Well today that wasnt the case. I started browsing and found the 3 causes are either the button pack, the TCCM, and the encoder motor. Well i went to look at the TCCM since it seemed the easiest after already checking the button pack and reflowing the solder which had no effect.Check if your AC pressure switch has two or three wires. If there are two wires, these are normally just a signal and a ground wire. If there are three wires, it probably has a 5 volt wire, signal, and ground. However, you must confirm this with a wiring diagram. Measure between the signal and ground pin with a multimeter and check Ohms.It is porbably short somewhere, Trace the wiring from the O2 sensors all the way back and see if its touching any surfaces that may be hot (exhaust,etc to the fuse box) also check your fuse box for a blown fuse. Check the fuse box first and then check the wiring of the O2 sensors going to the fuse box. ThomasG.

Step 5: Conduct Stator Ring Scan. You have now checked almost every part that usually is prone to damage in the ABS module. Sometimes you may have a damaged ABS and fail to see the red warning light. Stator rings found in the ABS are prone to damage and mostly don't get noticed since the red warning light doesn't pop.Out of many symptoms of a bad engine ground wire, the one most of us dread in unpleasant weather is the air conditioning unit behaving unruly. The compressor clutch of the air conditioner will not receive ample power from the battery, thus creating a lockout due to low-pressure. As the compressor clutch will not receive proper electric …3. Hesitation, rough or jerky acceleration. As you may suspect, a faulty fuel injection caused by a poor MAF sensor can also make your acceleration rough or jerky. This is usually because the air-fuel mixture becomes too lean, so the car engine "starves" due to a lack of food, and this will cause it to jerk.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. LU3/LG3 (2003-2014 in Silverado, Sierra, S10, Blazer, etc.) .... Possible cause: Refer to the above illustration to determine where the ground is located on the veh.