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    GM Century/Lumina/Grand Prix/Intrigue 1997-2000

    Jump Starting Procedure

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    Click image to see an enlarged view

    Fig. Because the battery is difficult to access, on the passenger side, under this cover at the underhood electrical center is the remote battery-positive connector for jump starting-Grand Prix with 3.8L engine



    Click image to see an enlarged view

    Fig. On this 3.1L Lumina, the remote auxiliary battery positive terminal is on the driver's side, but still clearly marked



    Click image to see an enlarged view

    Fig. Lift the protective cover to access the remote auxiliary battery positive-Lumina with 3.1L engine


    CAUTION
    Do not connect a jumper cable directly to the negative battery to prevent sparking and possible explosion of battery gases.


    NOTE
    When jump starting a vehicle with charging equipment, be sure equipment used is 12 volt and negative ground. Do not use 24-volt charging equipment. Using such equipment can cause serious damage to the electrical system or electronic parts.

    The GM W-Body vehicles covered by this guide have a number of sophisticated electronic systems and several sensitive on-board computers that can be damaged and are expensive to replace. Follow this factory procedure to avoid vehicle damage. In addition, the battery on most of these vehicles is usually hidden by other components, usually the windshield washer reservoir. For that rear, a remote battery positive terminal is provided.

    1. Position the vehicle with the good battery so that the jumper cables will reach, but do not let the vehicles touch. Be sure the jumper cables are in good condition and do not have loose or missing insulation.
    2.  
    3. Turn the ignition switch to the OFF position. Turn all lamps and electrical loads on both vehicles off. Note that the hazard flashers and any lamps needed (underhood light, etc.) should be left on as needed.
    4.  
    5. Apply the parking brake on both vehicles. Verify that the automatic transaxle is in PARK. The vehicle with the good battery should also be in PARK, or NEUTRAL, if a manual transmission.
    6.  
    7. Check the built-in hydrometer "eye" (factory-type battery). If it is clear or light yellow, replace the battery.
    8.  
    9. On these vehicles, a remote positive stud is provided for jump starting. This is much more convenient, and safer, than trying to get a jumper cable on the small side terminal bolt head at the battery, especially when it is hidden by another underhood component. The remote positive stud is covered by a red plastic flap and is located near the underhood electrical center. Clamp one end of the first jumper cable to the positive terminal remote stud. Making sure the jumper cable does not touch any other metal parts, clamp the other end of the same booster cable to the booster battery positive terminal (or its remote stud, if so equipped). NEVER connect positive to negative.
    10.  
    11. Clamp one end of the second cable to the negative terminal of the booster battery. Make the final connection to a solid engine ground (metal bracket on the engine, etc.) at least 18 inches from the discharged battery. Make sure the cables are not on or near pulleys, fans or other parts that will move when the engine is started.
    12.  
    13. Start the engine of the vehicle with the good battery. Run the engine at a moderate speed (approximately 1500 rpm) for several minutes. Then, start the engine of the vehicle which has the discharged battery.
    14.  
    15. Remove the jumper cables by reversing the above sequence. Remove the negative cable from the vehicle with the discharged battery first. While removing each clamp, take care that it does not touch any other metal surfaces while the other end remains attached.
    16.  

     
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