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Transmission Fluid Refill NOTICE: This procedure contains the air purge steps required to purge air from the cooling system. This procedure is NOT intended for use with the Transmission Fluid Level Check. NOTICE: The vehicle should not be driven if the fluid level is low as internal failure could result. NOTICE: The fluid fill plug is located near the exhaust system. The exhaust will be extremely hot during this procedure. NOTICE: The use of any other transmission fluid than specified, can result in the transmission failing to operate in a normal manner or transmission failure. NOTE: If the transmission starts to slip, shifts slowly or shows signs of fluid leaking, the fluid level should be checked. NOTE: Here is an overview of the Transmission Fluid Drain and Refill procedure. Adding 3.3L (3.5 qt) of clean automatic transmission fluid to the transmission is an initial fill enabling you to start the engine. The cold level range shown in the procedure allows the vehicle to be driven. The vehicle should be driven to allow the transmission fluid temperature to reach 85ºC-88ºC (185ºF-190ºF) in order to purge the air from the transmission cooling system. Fill the transmission fluid to the fill range on the fluid level indicator at the normal operating range 80ºC-85ºC (175ºF-185ºF). 1. NOTE: The transmission will need 3.3L (3.5 qt) of clean automatic transmission fluid added to the transmission as an initial fill if: the transmission has been overhauled. a new mechatronic assembly has been installed. the transmission fluid pan or fluid filter have been removed. Using the special tool, add 3.3L (3.5 qt) of clean automatic transmission fluid to the transmission through the fluid fill hole. For additional information, refer to Adding Additional Transmission Fluid in this procedure. 2. Check the transmission fluid level cold. 1. The vehicle is safe to drive if the transmission fluid is in the cold level range 32°C-43°C (90° F-11 0° F). Using the scan tool and the engine running, place the transmission selector lever in each gear position and hold approximately 5 seconds. Place the transmission selector lever in PARK, with the engine at idle (600-750 rpm).

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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.

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Automatic Transmission/Torque Converter Clutch (TCC) Shudder, Water in Transmission (Repair Transmission and Replace Transmission Filler Tube, Level Indicator and Seal) Condition Some customers may comment on a shudder condition at approximately 64-80 km/h (40-50 mph) when the TCC engages. Cause This condition may be caused by water in the automatic transmission fluid (ATF). Water may enter the transmission by dripping from the cowl area onto the handle of the transmission fluid level indicator. Indications of water in the ATF may include: • Visible rust on the transmission fluid level indicator. • Visible water in the oil pan. • A milky white substance inside the pan area. • Spacer plate gaskets that appear to be glued to the spacer plate, valve body or case. • Rust on internal transmission iron/steel components. Correction First, repair the transmission and second, replace the transmission fill tube, seal and level indicator to prevent repeat water contamination of the ATF. Transmission Repair 1. Remove the transmission. Refer to the appropriate SI procedure. 2. Disassemble and inspect the transmission. Refer to Unit Repair Automatic Transmission – 4L60-E/4L65-E. Important: If water or coolant is found in the transmission, the following components MUST be replaced. • Replace all of the rubber type seals. • Replace all of the composition-faced clutch plate assemblies including the band. • Replace all of the nylon parts (Thrust Washers). • Replace the torque converter. • Thoroughly clean and rebuild the transmission, using new gaskets and oil filter. • Flush and flow check the transmission oil cooler using J 45096. Refer to Corporate Bulletin Number 02-07-30- 052C or newer – Automatic Transmission Oil Cooler Flush and Flow Test Essential Tool J 45096 TransFlow . Replace the Transmission Fluid Filler Tube, Seal and Fluid Level Indicator WITH the transmission REMOVED from vehicle. 1. Remove the transmission fluid filler tube from the transmission. 2. Replace the transmission fill tube seal, P/N 1259475. 3. Replace the transmission fill tube, P/N 15000220, following the appropriate SI Document for Transmission Installation. 4. Replace the transmission fluid level indicator, P/N 15069769 when appropriate during the transmission installation. Replace the Transmission Fluid Filler Tube, Seal and Fluid Level Indicator with the transmission in the vehicle. 1. Remove the air cleaner outlet duct. Refer to Air Cleaner Element Replacement (SI Document ID# 1364496). 2. Remove the transmission fluid level indicator from the filler tube.

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Special Tool(s) Fluid Fill Reference NOTE: The left side of case is shown. The fill plug is on the right side of the extension housing. Check 1. Using the scan tool (WDS), monitor the transmission fluid temperature (TFT) using PID: TFT. 2. Start the vehicle. 3. Engine idle speed should be approximately at 650 rpm. Run engine until the recommended TFT is between 27°C and 49°C (80°F – 120°F) . The fluid level can be checked above 50°C (122°F) using this procedure. 4. Move the selector lever slowly, stopping in each gear. 5. Place selector lever in the PARK position. 6. Raise and support the vehicle. 7. Set vehicle as close to level as possible. Optional, if needed, the special tool can be used to assist in leveling the vehicle. 9. NOTE: It will be necessary to hold the drain plug (larger plug) with a wrench when removing the fluid level indicator plug. With the transmission in the PARK position and the engine running, use a 3/16 inch Allen key to remove the fluid level indicator plug. 10. Allow the fluid to drain. Wait approximately one minute. When the fluid comes out as a thin stream or a drip, it is at the correct level. 11. If no fluid comes out of the hole, fluid will need to be added. Continue with this procedure.

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1. Raise and support the vehicle. Refer to Vehicle Lifting. 2. Remove the drain plug and drain fluid. Allow at least 5 minutes for the fluid to drain completely. 3. Remove the gasket from the drain plug and discard. Installation Procedure 1. Install the new gasket on the drain plug. Notice: Refer to Component Fastener Tightening Notice. 2. Install the drain plug. Tighten the drain plug to 40 N.m (30 lb ft). 3. Make sure vehicle is level. 4. Remove the fluid level indicator located behind the front transaxle mount. Notice: Do not remove the 3rd gear anchor band bolt located on top of the transmission for checking fluid or adding fluid. Removing the bolt will dislocate internal components and require the transmission to be removed from the vehicle and disassembled for repair. Important: Dexron(R)III automatic transmission fluid is not compatible with this transaxle. If Dexron(R)III ATF is used, transaxle failure will result. Refer to Sealers, Adhesives, and Lubricants. 5. Add approximately 3.1 L (3.3 Qt)