Question about 2003 Chevrolet Silverado 2500HD

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Blower motor does not cut off after taking key out, and blower will not start when re-entering the truck. It just comes on when riding along. My truck has dual climate controls

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HI! So the only thing that shuts down the blower is removing the battery terminal? The fan motor relay may be corroded or faulty causing the motor to malfunction. You may just need to clean this if its corroded, but after cleaning is performed and still fails, I believe that the relay itself may need replacement. Hope this helps and have a good one!

Posted on May 30, 2010


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    How do I replace blower motor on 1997 Bravada

    GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide

    Pick-Up models


    Fig. 1: Blower motor assembly and resistor locations

    1. Disconnect the negative battery cable.
    2. If equipped, remove the Vehicle Control Module (VCM) from the engine compartment.
    3. Remove the coolant recovery reservoir.
    4. Disconnect the blower motor cooling tube.
    5. Unplug the electrical connector(s) from the blower motor, as necessary.
    6. Remove the blower motor-to-case screws, then carefully withdraw the blower motor from the case.

    To install:
    1. Install the blower motor to the case and secure using the retaining screws.
    2. Engage the electrical connector(s) to the motor, as necessary.
    3. If moved on early model vehicles, reposition and secure the A/C vacuum tank.
    4. Connect the blower motor cooling tube.
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    6. Connect the negative battery cable.

    Utility Models
    See Figure 6
    1. Disconnect the negative battery cable.
    2. If equipped, remove the Vehicle Control Module (VCM) from the engine compartment.
    3. Remove the coolant recovery reservoir.
    4. Disconnect the blower motor cooling tube.
    5. Unplug the electrical connector(s) from the blower motor, as necessary.
    6. Remove the blower motor-to-case screws (the lower screw is on the bottom front of the cover).
    7. Disconnect the harness from the blower motor.
    8. Use a razor or utility knife to cut through the cover on the cut line as neatly as possible because the access cover has to be reinstalled.
    9. Starting with upper half of the cover, tear the remaining part of the access cover from the remaining portion. Then remove the lower half of the cover in the same manner.
    10. Remove the blower motor assembly.

    To install:
    1. Install the blower motor assembly.
    2. Connect the two halves of the access cover together using the three flange clips.
    3. Using black duct tape, place a piece of the tape along the bottom lower edge of the lower half of the lower cover only. The tape has to be the full width of the cover.
    4. Install the access cover onto the case.
    5. Install the screw and align the cut areas.
    6. Seal the cut areas using black weaterstrip adhesive. Do not use RTV to seal the assembly. The weatherstrip adhesive bead should be as straight as possible to ensure a neat and professional finish to the cover. Allow the adhesive to set at least 15 minutes until it skins over.
    7. Attach the electrical connections.
    8. Attach the cooling tube and install the coolant recovery reservoir.
    9. If removed, install the VCM.
    10. Connect the negative battery cable and refill the coolant reservoir to the proper level.

    Fig. 2: Cut the blower motor access along the dotted line shown in this illustration

    Hope this help (remember rated this help) Good luck.

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