Tip & How-To about Chevrolet S 10

Chevrolet Blazer 4.3 Alternator removal

Unhook the battery terminals. Loosen the tensioner pulley and remove the belt from the pulley (if there's no belt routing diagram under the hood, draw one first). * Unplug the 4 pronged black wire that goes into the back. Unscrew the 10mm bolt that holds on the positive lead cable to the alternator. Take out the upper and lower bolts on the alternator. Check the back and see if it still has the black support rod bolted onto it. If it does, then remove that bolt also. GENTLY pry the alternator loose under the lower mount (be careful these alternator brackets have a tendency to break if forced too much).

* Sometimes it's easier to remove the wires after the unit is unbolted and loose, just a matter of ease and preference.

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serpentine belt diagram for a 2003 Chevy unpalatable 4.3


Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

  • 2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.
  • 3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.
  • 4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.
  • 5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.
  • 6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

  • Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb

    Sep 21, 2011 | 2003 Chevrolet Impala

    1 Answer

    alternator removal of 2000 aurora


    Check under the hood or around the radiator support for the serpentine belt routing.
    If you can not locate on then make a DETAIL drawing on the belt routing.
    =====
    Move the belt tension and move the pulley to free the belt.
    =====
    Set the belt aside on a dry and clean service.
    =====
    Remove the negative terminal on the battery.
    =====
    Remove the red cable and connector.
    =====
    Loosen the alternator mounting bolts and replace with new unit.
    =====
    Route belt back onto all pulleys.
    =====
    Move the tensioner pulley out of the pathway and loop the belt back
    =====
    Reconnect all cables
    ===== clear all tools off the work area.
    re-inspect the belt before starting the engine.

    Jan 25, 2011 | 2000 Oldsmobile Aurora

    2 Answers

    change serpentine belt on 06 sienna


    1. 1 Check to ensure the Sienna's engine is cold, then make sure the Sienna is in park, the ignition is in the off position and the key is removed from the ignition to prevent any possibility of the engine engaging during the serpentine belt replacement.
    2. 2 Open the hood and locate the serpentine belt routing diagram sticker on the side of the engine casing. Study it for a moment before removing the existing belt. It is essential the new belt be installed exactly as the diagram indicates.
    3. 3 Find the tensioner pulley, the main pulley that controls the serpentine belt, and fit a 1/2-inch socket wrench over the self-tensioner on the outside of the pulley.
    4. 4 Pull the wrench to the left to move the pulley forward, which loosens the belt, then remove the belt.
    5. 5 Compare the old serpentine belt with the new, replacement belt for length, width and number of grooves on the belt's underside. Be certain the replacement belt is the right part.
    6. 6 Fit the new belt on to each pulley according to the serpentine belt routing diagram on the manufacturer's sticker, or according to the drawing made prior to removing the old belt. Fit the new belt on to the tensioner pulley last, again applying pressure on the pulley's self-tensioner with the half-inch socket wrench to loosen the pulley.
    7. 7 Release the pressure on the self tensioner and allow the tensioner pulley to ease back into place, thereby tightening the new serpentine belt with the appropriate tension.
    8. 8 Remove the wrench and close the hood.
    Thank you and good luck,
    Lee

    Aug 26, 2010 | 2006 Toyota Sienna

    1 Answer

    what do I have to remove to remove the alternator, (hoses,wire harness, hoses)?


    Unhook the battery terminals.Loosen the tensioner pulley and remove the belt from the pulley (if there's no belt routing diagram under the hood, draw one first). * Unplug the 4 pronged black wire that goes into the back. Unscrew the 10mm bolt that holds on the positive lead cable to the alternator. Take out the upper and lower bolts on the alternator. Check the back and see if it still has the black support rod bolted onto it. If it does, then remove that bolt also. GENTLY pry the alternator loose under the lower mount (be careful these alternator brackets have a tendency to break if forced too much).

    * Sometimes it's easier to remove the wires after the unit is unbolted and loose, just a matter of ease and preference.

    Feb 26, 2010 | 1996 Chevrolet Blazer

    2 Answers

    how do i replace the serpentine belt on my 2000 jeep cherokee with air conditioning.


    There is a tensioner pulley on the drivers top side of the engine. Loosen the bolt on the pulley about a turn or so (I believe it's 15mm). Then loosen the adjusting bolt above the pulley until tension is off the belt. Remove the belt and route the new belt in the same manner the old one was. There should be a diagram under the hood showing the routing. If not, draw a quick one up before removing the old belt. Tighten the adjusting bolt until there is sufficient tension on the belt and lock down the pulley bolt.

    Oct 04, 2009 | 2000 Jeep Cherokee

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