Top 10 2004 Chevrolet Impala Questions & Answers

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diagram for drive belt replacement 2004 chevy

diagram for drive belt replacement 2004 chevy impala ls 3.8

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Check the next diagrams for 2004 Chevrolet Impala 3.8L SFI OHV 6cyl...

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Fig. Serpentine drive belt routing-3.8L (VIN 1) Engine (click for zoom)




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Fig. Serpentine drive belt routing-3.8L (VIN K) Engine




Removal & Installation - 3.8L Engine


L32 Engine
1. Rotate the drive belt tensioner using a 15-mm box end wrench on the pulley nut.
2. Remove the drive belt.
CAUTION
After the new drive belt is installed, make sure that the mark on the drive belt tensioner is within range, as indicated on the tensioner housing.

3. To install, lift or rotate the drive belt tensioner using a 15-mm box end wrench on the pulley nut.
4. Install the drive belt. Make sure the drive belt is properly routed. Make sure the drive belt tensioner is operating properly.


L67 Engine
The supercharged 3800 engine utilizes two drive belts. The outer drive belt drives the supercharger. The inner drive belt drives the following components:
Generator
Power steering pump
Water pump

Air conditioning compressor All driven accessories rigidly mount to the engine. Spring-loaded belt tensioners maintain the drive belt tension. Each drive belt has its own tensioner. A drive belt squeak, occurring when the engine starts or stops, is normal and has no effect on the durability of the drive belt. The drive belt tensioner can control the drive belt tension over a broad range of drive belt lengths, due to stretching. However, there are limits to the tensioner's compensation ability. Poor tension control and/or damage to the tensioner may occur after using the tensioner outside of its operating range. Replace the drive belt when this occurs.

1. Lift or rotate the supercharger drive belt tensioner using a 15 mm box end wrench on the pulley nut.
2. Remove the supercharger drive belt.
3. Lift or rotate the drive belt tensioner using a 15 mm box end wrench on the pulley nut.
4. Remove the drive belt.
5. To install, reverse removal procedure.





Hope helps with this.








Posted on Nov 11, 2010

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where is the radiator drain plug on a 2004 chevy

where is the radiator drain plug on a 2004 chevy impala

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Hi! The radiator drain plug is located at the bottom of the radiator facing engine. I have enclosed a picture for you! Hope this helps!4528be6.gif

Posted on Sep 12, 2009

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tag light is not working.

tag light is not working. is there a fuse that will get the light turned back on?

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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.

Posted on Feb 17, 2011

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Radio works (tuner, volume control, cd) but no sound

2003 Chevy Impala. Car was unused for about 10 months. During that time it was started and run various times. Eventually the battery died, was jump started, but battery was bad. Since that time the radio seems to work but there is no sound. Have replaced the battery. Car now starts fine but still no sound from radio or cd player.

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If your radio looks to be working and no sound, open trunk and mounted underneath the deck lid you will see your amp or sound booster. It should have two plugs that plug into it. Unplug the one with two orange wires and with the car switch turned on, check to see if the two orange wires have power on them. If they don't get ready to take out the rear interior and underneath the rear carpet almost at the front seat you will see a big plastic sleeve full of wires on the passenger side. Inside this sleeve there will be one orange wire branching into two orange wires, check to see if it is corroded. That would be where I start.

Posted on Sep 25, 2011

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looking for head bolt troque spec for 3.4l impala

looking for head bolt troque spec for 3.4l impala sfi04

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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).
  • Posted on Nov 26, 2010

    Question

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    I have a 2004 Impala that transmission jerks into

    I have a 2004 Impala that transmission jerks into gears periodically when doing a bit of stopping and starting off. Have talked to other Impala owners,and some have had tranny problems also. It just happens off and on, you take it home and park it, drive it later, it's fine. Then when you least expect it,say going block to block, it jerks into each gear,hard. Anybody else have similar problems, or do I have a defective Impala too??? Thanx for any help you can give me
    Mary

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    This is common problems to the transmission when the fluid is getting to dirty and the transmission fluid and filter needs to be replaced. The transmission fluid and filter should be replaced every 45,000 miles to ensure there is no dirt causing the shift servos from binding. The other thing to is that when the transmission fluid get's to dirty, the fluid gets thicker. It retains fluid retention which can cause conflicts in the transmission sensors. What your experiencing is, your transmission is not shifting back to first gear and sticking in to 2nd gear. When you get on the gas peddle, the transmission sensors realize that it needs to be in 1st gear, so as the engine's RPM goes up and the transmission drops back to 1st, you get the jerking condition which will in turn cause you a $2,300.00 transmission replacement. For now when starting off from a stop, let the engine creep forward on it's own first to ensure that the transmission has shifted in to 1st gear. Then get on the gas peddle lightly till you have the transmission serviced. $100.00 transmission service is better then $2,300.00 transmission replacement. Good luck and do not have a transmission fluid flush, just filter and fluid replacement.

    Posted on Nov 21, 2009

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    unlock antitheft code for 2004 chevy impala

    My cd player did not work so I had a new system put in my 2004 impala.
    Put my old radio in my sons 2004 chevy trailblazer and it is locked out. Any idea on how to get it unlocked or have the code?

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    Radios in the 2004 Impalas are tied to the vehicle's VIN through the computer, so it may be somewhat difficult to get the code. However, the following steps should work:

    1. Press and hold the buttons for presets 1 & 4 (may be 2 & 3). The word "SEC" should show.
    2. Press the "MIN" button. "000" should be displayed.
    3. Press the "MIN" button again to have the second two numbers appear. Record these numbers.
    4. Press the "HR" button for the first two numbers to appear. Record these numbers. -- Note: Your number sequence should be the numbers from the "HR" button followed by the numbers from the "MIN" button.
    5. Call 1-800-537-5140. This will get you to the GM unlock code automated line. Ignore the prompt and enter "202108#". Next enter your code (remember, HR then MIN) followed by the * key. For example, 1234*. A 3 or 4 digit code will be given to you. If you get a code such as 0532, drop the zero when entering it into your radio.
    6. Enter the code into the radio IAW the applicable manual.

    Posted on May 30, 2008

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    2004 Chevy Impala no heat from defrost or heater

    My 2004 Chevy Impala is blowing cold air through defrost or the heater. My coolant level is low however (overflow bottle is empty). Could this be the problem (coolant level being low) as to why there is no heat or is it a heater core issue. Thanks for your time and consideration. Doug

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    No heat is often a symptom of low coolant, usually followed by overheat. There are other controls that regulate heater, but right now, re-fill the cooling system with engine running and heater on high, then check for leaks (coolant you lost went somewhere...you need to determine where) Low coolant will damage your engine. Take care of that first, then if heater still does not work, then do diagnosis on that. (if you loose the engine heat won't matter, will it!)

    Posted on Sep 22, 2009

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    what is the gap for an 04 impala spark plug

    what is the gap for an 04 impala spark plug

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    The gap depends on which motor you have and what kind of plug. Irecommend staying with the original brand and number. My 2002 Impala w/ 3.8L has a 0.060" gap on it's plugs. According to Autozone, the gap for the 2005 3.4L or 3.8L is also 0.060".

    Posted on Jun 06, 2010

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    2004 Impala rear window defroster not working

    - checked voltage at rear window defrost connector where it connects to the defrost grid at the rear window - no voltage
    - no 'click' is heard from the relay when I turn the defrost switch on
    - i pulled the relay in the passenger side fuse panel and get 12V at the defrost relay power feed . this makes me think the relay is bad .. but before i go get one
    - i see in the schematic that there is a breaker for the defrost circuit .. i cannot seem to find it

    any experience with this? your comments appreciated.

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    I have a 2001 impala so this may or may not help but the rear defog relay is on the passenger side dash next to the door Also the rear defog breaker is in the same place.

    Posted on Aug 31, 2009

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