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1995 Pontiac Sunfire Corrosion/ Moisture Entering the PCM

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Filed Under (Pontiac) by admin on 22-01-2011

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Condition General Motors has decided to conduct a Voluntary Emission Campaign involving certain 1997, 1998 and 1999 Chevrolet Cavalier and Pontiac Sunfire model vehicles located in fifteen U.S. high salt corrosion states and in Ontario. Quebec and Atlantic provinces; and certain 1995, 1996, 1997, 1998, and 1999 Chevrolet Cavalier and Pontiac Sunfire model vehicles located Manitoba, Saskatchewan, Alberta, British Columbia, the Yukon and Northwest Territories. These vehicles have the potential to experience moisture entering the Powertrain Control Module (PCM), as a result of corrosion after extended exposure to road salt, Moisture entering the PCM can lead to symptoms including illumination of the Check Engine light or the engine running rough. If these symptoms are ignored, the engine may stall and may not be able to be restarted.

2004 Pontiac Sunfire Thermostat Replacement Removal Procedure

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Filed Under (Pontiac) by admin on 10-09-2010

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1. If equipped with an automatic transmission, remove the exhaust manifold. 2. Drain the cooling system. 3. Remove the thermostat housing to water pump feed pipe bolts. 4. Remove the thermostat housing to water pump feed pipe. 5. Remove the thermostat. 2004 Pontiac Sunfire L4-2.2L VIN F Installation Procedure 1. Install the thermostat. 2. Install the thermostat housing to water pump feed pipe. Notice: Refer to Fastener Notice in Service Precautions. 3. Install the thermostat housing to water pump feed pipe bolt. ^ Tighten the thermostat housing to water pump feed pipe bolt to 10 Nm (18 inch lbs.). 4. If equipped with an automatic transmission, install the exhaust manifold. 5. Fill the cooling system.

2000-2002 Pontiac Grand Prix Low Engine Coolant Level Indicator Always on (Diagnose Low Coolant Level System

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Filed Under (Pontiac) by admin on 17-01-2011

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Subject: Models: Low Engine Coolant Level Indicator Always On (Diagnose Low Coolant Level System Operation/Check Sensor for Oil Contamination) 2000-2002 Buick Century, Regal 2000-2001 Chevrolet Lumina 2000-2002 Chevrolet Impala, Monte Carlo 2000-2002 Pontiac Grand Prix 2000-2002 Oldsmobile Intrigue Condition Some customers may comment that the low engine coolant level indicator is always illuminated. Cause The cause of this condition may be due to engine oil contaminating the coolant. Possible sources of oil contamination are internal engine leaks, improper service procedures, or the addition of some types of anti-leak additives to the cooling system. Once in the coolant, the oil leaves deposits on the level sensor creating an insulating film. This film results in a false activation of the coolant level indicator. Correction Diagnose low coolant level system operation and check the sensor for oil contamination using the procedure listed below. Important: No coolant supplements should be used in GM cooling systems, other than what is approved and recommended by GM. The use of “aftermarket” over-the-counter sealing and cooling supplements may affect the operation of the low coolant level sensor. Discoloration of the coolant recovery bottle is normal and does not necessarily indicate that coolant contamination is present. Flush cooling system only when instructed by this bulletin. 1. Verify that the coolant is at proper level in the radiator and the coolant recovery bottle. If the coolant is low, add proper amount of 50/50 water and DEX-COOL® mixture. If the low coolant light operates properly, diagnose the cooling system for loss of coolant as outlined in SI. DO NOT proceed further with this bulletin. 2. Remove the low coolant level sensor. Refer to Coolant Level Module Replacement in the Engine Cooling sub-section. 3. With the key on, the engine off and the coolant level sensor disconnected from the vehicle wiring harness, observe the low coolant light: • Light is on — Chassis wiring or instrument cluster concern. Follow the appropriate diagnostic information in SI. • Light is out — Proceed to Step 4.

2005-2006 Pontiac G6 Brake Lamps Not Working Properly

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Filed Under (Pontiac) by admin on 01-01-2011

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2005-2006 model year Pontiac G6 vehicles. Some of these vehicles have a condition where the brake lamps may not operate properly because of fretting corrosion in a wiring connector. Fretting corrosion in the connector could cause the brake lamps to illuminate when the brake pedal has not been depressed, or the lamps may not illuminate when the brake pedal is depressed. In addition, the cruise control may not engage, or greater brake pedal force may be required to shift the vehicle out of PARK. Brake lamps that are not operating properly may not warn a driver in a following vehicle of the braking status and could lead to a crash without prior warning. apply a dielectric lubricant to the connector to repair and prevent fretting corrosion.

1999 Pontiac Grand Timing Chain Tensioner Installation

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Filed Under (Pontiac) by admin on 16-09-2010

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Important: Use the following steps in order to reset the timing chain tensioner assembly to the zero position. 1. Reset the timing chain tensioner assembly. A. B. C. D. Insert the tensioner plunger assembly into the tensioner housing. With the tensioner plunger fully extended, turn the complete assembly upside down on a bench or other flat surface. With the plunger face against the workbench, press firmly on the boffom of the tensioner housing. Compress the plunger until the plunger is seated flush in the tensioner. 2. Check the plunger to make sure that the plunger is out of the cylinder at the correct dimension. The correct dimension for the plunger to extend out of the cylinder is 1.7 mm ( 0.070 in ) maximum 1999 Pontiac Grand AM L4-144 2.4L DOHC VIN T SFI 3. Loosely install the tensioner assembly and bolts to the timing chain housing. 4. Install the timing chain tensioner shoe on the stud. 5. Apply hand pressure to the timing chain tensioner shoe until the locking tab seats in the groove in the stud. Notice: Do not over tighten the bolts retaining the component or failure to the component may occur. 6. Tighten the timing chain tensioner bolts. Tighten