Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Subject: L36, L67, L26, L32, LA1, LX9, MN7, M15 Ticking or Knocking Type Noise Coming From Engine or Transmission Area (Replace Flexplate and Torque Converter) Models: 2005 Buick Park Avenue 2005-2006 Buick Allure (Canada Only), LaCrosse, LeSabre, Rendezvous, Terraza 2005 Chevrolet Impala, Monte Carlo, Venture 2005-2006 Chevrolet Malibu, Malibu Maxx, Uplander 2005 Pontiac Aztek, Bonneville 2005-2006 Pontiac Grand Prix, G6 GTP, Montana SV6 2006 Saturn Relay AWD with 3800 3.8L Series III V6 Engine (VINs K, 1, 2, 4, – RPOs L36, L67, L26, L32) or 3500 3.5L V6 Engine (VINs L, 8 RPO LX9) or 3400 3.4L V6 Engine (VIN E – RPO LA1) and Hydra- Matic(R) 4T65-E Transmission (RPOs MN7, M15) Some customers may comment on a ticking or knocking type noise coming from the engine or transmission area. Cause Typically the noise is caused by either the transmission rear dust cover contacting the flexplate (refer to Corporate Bulletin Number 05-06-01-028) or a cracked flexplate (sometimes also referred to as a flywheel). Correction With the vehicle raised and supported on a suitable hoist, verify that the noise is coming from the flexplate area. If the noise is present, follow the procedure below. If the noise is not coming from the flexplate area, refer to Lower Engine Noise, Regardless of Engine Speed in SI. Important: The following information only applies to vehicles with the noise coming from the flexplate area.

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When the ignition key is first turned to the RUN position, the inflatable restraint sensing and diagnostic module (SDM) compares the restraints ID that is stored in the SDM to the restraints ID that is stored in the BCM. The restraints ID that is being compared contains the last four digits of the SDM part number. Next, the SDM compares the VIN that is stored in the SDM to the VIN that is stored in the BCM. For more detailed information concerning the Class 2 data lines, refer to Data Link Connector Circuit Description in Data Link Communications. Conditions for Setting the DTC Ignition 1 voltage is within the normal operating voltage range. The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the BCM or the VIN information that is stored in the SDM does not match the VIN information that is stored in the BCM. This test is only run once during power up initialization. Action Taken When the DTC Sets The SDM sets a DTC B1001. The SDM commands ON the AIR BAG warning lamp via Class 2 serial data. The SDM disables all deployments. Conditions for Clearing the DTC The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM and the VIN information that is stored in the SDM matches the VIN information that is stored in the BCM.

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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 DO THIS DON’T DO THIS Install a Capacitor at the Blower Motor Control Module Connector 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. DO NOT replace the Blower Motor Control Module, Blower Motor or the HVAC Control Head

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The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage. The electronic brake control module (EBCM) controls each solenoid valve by grounding the solenoid. The EBCM controls the pump motor by grounding the control circuit. The pump serves 2 purposes: Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events. Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events. Conditions for Running the DTC The ignition voltage is greater than 10.5 volts. The system relay is commanded ON. Conditions for Setting the DTC The system voltage is less than 8 volts for 0.23 seconds. Action Taken When the DTC Sets If equipped, the following actions occur: The EBCM disables the DRP/ABS/TCS/VSES for the duration of the ignition cycle. The ABS indicator turns ON. The Traction Off indicator turns ON. The DIC displays the Service Stability System message. The EBCM will also set DTC C1248. The red Brake warning indicator turns ON.

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Definition Body Control System Malfunction Chassis Control System Malfunction HO2S 1 Heater Circuit MAF System Performance MAF Sensor Circuit – Low Frequency TP Sensor Circuit – High Voltage ECT Excessive Time To Enter Closed Loop Fuel Control ECT Below Thermostat Regulating Temperature HO2S 1 – Insufficient Activity For Closed Loop Operation HO2S Circuit Low Voltage – Sensor 1 HO2S Circuit High Voltage – Sensor 1 HO2S Circuit Slow Response – Sensor 1 Injector No. 5 Control Circuit Injector No. 6 Control Circuit High Transmission Fluid Temperature Fuel Pump Control Circuit Idle Speed – Low Idle Speed – High A/C Refrigerant Pressure Sensor Circuit System Voltage PCM Internal Program Fault PCM Not Programmed Generator Performance Malfunction Indicator Light Control Circuit Transmission Fluid Temperature Sensor Circuit Malfunction