Download 2004 Pontiac Grand Prix | Grand Prix (VIN W) Service Manual Subject: Blower Motor Inoperative or Intermittent, Blower Speed May Drop or Blower Continues to Run After Key Off (Install a Capacitor at Blower Motor Control Module Connector) Models: 2005 Buick Allure (Canada Only), LaCrosse 2004-2005 Pontiac Grand Prix. 2004 Pontiac Grand Prix | Grand Prix (VIN W) Service Manual | Document ID: 1644694 #05-01-39-001A: Blower Motor Inoperative or Intermittent, Blower Speed May Drop or Blower Continues to Run After Key Off (Install a Capacitor at Blower Motor Control Module Connector) – (Apr 6, 2005) This bulletin is being revised to update Step 5 of the service procedure. Please discard Corporate Bulletin Number 05-01-39-001 (Section 01 — HVAC). Condition Some customers may comment on an inoperative or intermittent Heating, Ventilation and Air Conditioning (HVAC) blower motor. Others may comment that the blower motor speed may momentarily drop or that the blower motor continues to run after the key is turned off. Cause This condition may be caused by a voltage spike from the wiper motor. The voltage spike may cause a logic lock up in the blower motor control module that may be either momentary or permanent. Correction Technicians are to install a capacitor, P/N 25073556, at the blower motor control module connector using the following procedure: 1. Disconnect the negative cable from the battery. Refer to the Battery Negative Cable Disconnect/Connect procedure in the Engine Electrical section of SI. 2. Remove the right closeout/insulator panel. Refer to the Closeout/Insulator Panel Replacement-Right procedure in the Instrument Panel, Gages and Console section of SI. 3. Disconnect the wire harness connector to the blower motor control module. 4. Install a capacitor, P/N 25073556, into the blower motor control module connector using the following steps. Refer to the illustration above to locate the positive and negative leads of the capacitor. Refer to the Splicing Copper Wire Using Splice Clips procedure in the Wiring Systems section of SI (Document ID #303646) for more information on using splice clips.
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