20 Most Recent 2004 Chevrolet Impala Questions & Answers

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Where is the fuses for

Read the owner manual
11/30/2021 2:47:55 AM • 2004 Chevrolet... • Answered 3 days ago
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3.8l. Cranks. Why doesn't it start?

Hello. It seems your catalytic converter is 'clogged'. Exhaust gases can't 'escape'; remaining 'trapped' before the catalytic converter. I, highly recommend, to stop using starting fluid for this particular problem; doing so may cause a 'flash fire'. Good luck and keep me informed; if you want to.
9/10/2021 3:51:47 PM • 2004 Chevrolet... • Answered on Sep 10, 2021
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My 2004 chevy impala dash lights wont come on

It is possible that it could be the key switch. Some connections or wiring might be lose in that area. Other than that it could be the wiring for the dashboard that could be loose. Loose wiring or loose ground may also cause this making it look like as if the power supplied by the battery is not enough. I would also check the dimming switch. It may also be loose or is going bad.
7/31/2021 6:41:27 PM • 2004 Chevrolet... • Answered on Jul 31, 2021
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Where do i find freeze plug in a 2004 chevy impala

all around the cylinder block and in the head as well ,look and you will fine plus one at the back of the engine behind the flywheel and its always this one that leaks first ,gearbox out for this one
7/29/2021 11:56:30 AM • 2004 Chevrolet... • Answered on Jul 29, 2021
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How do i change the front axle on a 2004 impala

You will need a large socket to fit the nut on the end of the CV axle shaft. You will also need a breaker bar to remove this nut. You will need a torque wrench capable of achieving the correct torque when replacing the nut on the replacement shaft. You will need a relatively heavy (3-pound) hammer and a pry bar to remove the axle shaft from the transmission housing. You should break the axle nut loose prior to raising the vehicle off the ground as it is very tight and may not come loose easily once raised. If you use an impact wrench then the need to do this before raising the vehicle is not as great. You need to raise the vehicle on jack stand(s). Remove the wheel from the side you are replacing. Remove the brake caliper and rotor assembly as well. Remove the axle nut. The axle must be pulled free of the hub spline by pushing it out backwards. This is not usually possible without either (1) separating the lower ball joint from the lower control arm, or (2) unbolting the lower control arm assembly from the subframe and pulling it outward and to the side. Be careful when pushing and pulling on the axle shaft. The outer CV joint is fixed, but the inner joint can be pulled out too far and become separated. This will make removal much more difficult. Once you have freed the outer CV joint from the hub, then you need to use the prybar and hammer to tap the inner joint out of the transaxle. It snaps in place and will take a few attempts to achieve. Be careful if trying to pry on the transaxle housing as it is cast metal and can break easily. Once you have the inner joint free you can remove the shaft. There may be some transmission fluid leak from the seal when you remove the shaft. Insert the new shaft into the transaxle. Push it in to snap it into place. You can pull back about an inch or two to help get the force necessary to pop it in, but again be careful not to overextend the inner joint. Once the inner joint is in place, slide the outer joint back through the hub splines. Reconnect the ball joint/lower control arm. Replace the axle nut (use the one supplied with the new shaft. Torque to proper specifications. Replace the rotor/caliper/wheel.
7/13/2021 8:09:57 PM • 2004 Chevrolet... • Answered on Jul 13, 2021
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3.8L V6. Why doesn't it start?

Hooking up a professional type scan tool an doing a full computer system scan would be the thing to do . This would check for codes in all the modules on the vehicle , BCM , PCM / ECM , ABS , Air bag, instrument cluster , radio , HVAC - heating an A/C etc... Could have a module bring down the serial data network . Do you know what that is (data network) ? You should also know what happens when you turn the key to start . Also checking the 5 volt reference circuit from the PCM/ECM .In modern vehicle design, 5-volt reference signals/circuits are a key aspect of vehicle command and control. As summarized by Gary Goms, the 5-volt reference signal typically "flows through a sensor containing a resistance that varies according to changes in temperature, pressure or position. https://cloreautomotive.com/blog/troubleshooting-5v-reference-circuits/#:~:text=In%20modern%20vehicle%20design%2C%205-volt%20reference%20signals%2Fcircuits%20are,according%20to%20changes%20in%20temperature%2C%20pressure%20or%20position. Data Link Connector (DLC) The DLC is a standardized 16 way connector located below the instrument panel and close to the steering column. Both the connector design and location are dictated by industry wide agreement to follow SAE J1962 standards. All DLCs are required to provide a power supply, hot at all times, to Pin 16. This circuit is used to power the scan tool. All DLCs provide a power ground at Pin 4 and a clean signal ground at Pin 5. The class 2 serial data communications circuit is provided at Pin 2 of the DLC. Class 2 Serial Data Link The class 2 serial data link allows the following modules to communicate and share data with each other: • Auxiliary Power Drop Connector • Body Control Module (BCM) • Digital Radio Receiver (U2K or U2L) • Driver Information Center (DIC) • Electronic Brake Control Module (EBCM) • Instrument Panel Cluster (IPC) • OnStar Module (UE1) • Powertrain Control Module (PCM) • Radio • Inflatable Restraint Sensing and Diagnostic Module (SDM) The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.
4/11/2021 6:38:47 PM • 2004 Chevrolet... • Answered on Apr 11, 2021
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Broken cigarett lighter in a 2004 impala

This is a pain! You may need to remove the console to get access to the back of the lighter. When you look inside the lighter socket there should be 2 small square holes in the metal sides 180 degrees apart. The plastic bezel has corresponding bumps that fit in the holes and hold the lighter in. Try to push them in while pulling on the lighter socket.
4/11/2021 2:24:24 PM • 2004 Chevrolet... • Answered on Apr 11, 2021
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Looking for head bolt troque spec for 3.4l impala

Please don't forget to rate. Thank you:

Left side front cylinder head


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Cylinder head bolt torque sequence-3.4L engine

  • Cylinder head by aligning it with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Left side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).


  • Right side rear cylinder head:


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    Cylinder head bolt torque sequence-3.4L engine


  • New cylinder head gasket
  • Cylinder head on top of the gasket and make certain it is lined up properly with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Right side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).
  • Spark plug wires
  • Exhaust crossover pipe. Torque the fastener to 18 ft. lbs. (25 Nm).
  • Valve rocker arms and pushrods. Torque the fastener to 89 inch lbs. (10 Nm). Using a torque angle meter torque the fastener an additional 30 degrees.
  • Lower intake manifold. Torque the bolts to 115 inch lbs. (13 Nm).
  • Upper intake manifold. Torque the bolts to 18 ft. lbs. (25 Nm).
  • 2/8/2021 1:05:35 AM • 2004 Chevrolet... • Answered on Feb 08, 2021
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    Where is the 7x crankshaft position sensor on a 2004 chevy impala 3400 engine. Are there any tricks that I need to know to change it?

    Crankshaft Position (CKP) Sensor B (LA1) Middle rear of the engine, below the exhaust manifold Turn the steering wheel fully to the left. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. Remove the right front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels. Disconnect the crankshaft position (CKP) sensor electrical connector. Remove the CKP sensor bolt. Remove the CKP sensor. Inspect for wear, cracks, or leakage if the sensor is not being replaced. • Crankshaft position (CKP) sensors The CKP sensor B is a variable reluctance sensor. The magnetic field of the sensor is altered by a crankshaft mounted reluctor wheel that has seven machined slots, six of which are equally spaced 60 degrees apart. The seventh slot is spaced 10 degrees after one of the 60 degree slots. This sensor provides the ignition control module (ICM) with 7X signals, or seven pulses for each revolution of the crankshaft. The pulse from the 10 degree slot is known as the sync pulse. Both of the sensor circuits are connected to the ignition control module (ICM). A signal converter within the ICM produces digital 3X output pulse to the powertrain control module (PCM), the 3X reference is known as the low resolution engine speed signal. The CKP sensor A contains a hall-effect switch. A hall-effect switch is a solid state switching device that produces a digital ON/OFF pulse when a rotating element passes between the sensor tip and a magnet. This rotating element is called an interrupter ring or blade. In this case the interrupter ring has 24 evenly spaced blades and windows and is part of the crankshaft damper assembly. This sensor provides the PCM with 24X signals, or 24 identical pulses per crankshaft revolution. The 24X signal is used for enhanced smoothness and idle stability at a lower calibrated RPM. The PCM supplies the sensor with a 12-volt reference, low reference, and signal circuit.
    1/19/2021 9:08:03 PM • 2004 Chevrolet... • Answered on Jan 19, 2021
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    My 2004 impala heater blower stopped working but was working fine yesterday but no heat today?

    Check fuse first. If ok then likely speed control module or blower motor itself is faulty.
    1/4/2021 11:06:10 PM • 2004 Chevrolet... • Answered on Jan 04, 2021
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    Disable theft mode on 2004 chevy impala

    The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well. http://www.diy-gm-security.com/ 25894444-ff3aley5mjcw2o5blinqaujc-2-0.jpg
    11/9/2020 3:37:41 AM • 2004 Chevrolet... • Answered on Nov 09, 2020
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    Tag light is not working.

    The fuse labeled REAR PARK LP 15A in the right instrument panel fuse box powers the rear park lamps, and the tag lamps. If your rear park lamps are working then you most likely need to replace the tag lamps (bulbs). Use the following procedure to replace the lamps.

    To Remove:
    1. Remove the two mounting screws from the license plate lamp.
    2. Remove the license plate lamp from the rear bumper fascia.
    3. Remove the license plate lamp socket by turning it counterclockwise.
    To Install:
    1. Install the license plate lamp socket by turning it clockwise.
    2. Position the license plate lamp to the rear bumper fascia.
    3. Install the license plate lamp mounting screws.
    3/24/2020 12:17:34 AM • 2004 Chevrolet... • Answered on Mar 24, 2020
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    Diagram for 2004 chevy impala engine

    a diagram of WHAT?
    3/2/2020 12:22:07 PM • 2004 Chevrolet... • Answered on Mar 02, 2020
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    How to remove air pockets in the cooling system.

    When you have air in your cooling system, check for leaking gaskets. Most of the time the head gasket is leaking. and it is just a matter of time the whole gasket blows out. It will cost you because the engine needs revision, once the head gasket blows. Don't drive till a tech has checked your engine.
    11/12/2019 6:59:36 AM • 2004 Chevrolet... • Answered on Nov 12, 2019
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    Is the 04 Impala 3.8 V6 an interference engine?

    this is a VERY good engine to own!!! you shouldnt have to replace te water pump unless it goes out,and the timing belt ,on ANY engine ,should be replaced at factory recommended intervals. the mileage on this car is below average. I love this engine...good power,reliable ,easy to work on,and parts are relatively inexpensive.
    9/16/2019 12:35:24 AM • 2004 Chevrolet... • Answered on Sep 16, 2019
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    2004 impalla ls fog lights no dash or rear lights at nightday time radio and gear selector bright at night very dim no lights in rear

    Go to car service or car accessories shop and the service person will help you out.
    7/13/2019 8:17:11 AM • 2004 Chevrolet... • Answered on Jul 13, 2019
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    2004 chevy impala coolant bleeder screw location

    If you mean the drain plug, bottom of the radiator on left side.
    5/29/2019 3:41:37 AM • 2004 Chevrolet... • Answered on May 29, 2019
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    I have a 2004 impala and if I drive the car all day it will start jerking at about 10-50 miles but not over & it does this like twice a week but if I park and turn it on 20 mins later it goes away

    Sounds to me like a heat related issue or even a charging issue best related. If the front grill is covered in mud or dirt it will not cool the components property. Clean that. How many km on the veh ur tranny filter might be dirty. It could need chg. If jts a standard ur clutch and friction disc might be worn. Or ur fuel pump might be going and after it runs its shorting out. Is there any obd codes or chk eng light of.
    4/2/2019 11:30:44 PM • 2004 Chevrolet... • Answered on Apr 02, 2019
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    CV axle shaft nut torque 2004 Chevy Impala?

    130 LB FT
    11/15/2018 3:14:48 AM • 2004 Chevrolet... • Answered on Nov 15, 2018
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