Download 2007 Chevrolet Cobalt Service & Repair Manual Software –

Replacing the transmission pan gasket on a Chevrolet Cobalt involves several steps and requires specific tools and materials. click here for more details on the download manual…..

Below is a detailed guide to help you through the process:

### Tools and Materials Needed

1. **Tools:**
– Socket set (including 10mm and 13mm sockets)
– Ratchet and extensions
– Torque wrench
– screwdrivers (flathead and Phillips)
– Pliers
– Oil catch pan
– Clean rags or paper towels
– scraper or gasket remover tool
– Brush for cleaning

2. **Materials:**
– New transmission pan gasket (make sure it’s the correct one for your model year)
– New transmission fluid (check the owner’s manual for the correct type)
– RTV silicone sealant (if specified by the gasket manufacturer)
– Brake cleaner or degreaser

### Step-by-Step Procedure

#### 1. **Preparation**
– **Safety First:** Park the vehicle on a flat surface, engage the parking brake, and disconnect the negative terminal of the battery to prevent any electrical issues.
– **Lift the Vehicle:** Use a jack to lift the front of the vehicle and secure it on jack stands to provide enough clearance to work underneath.

#### 2. **Drain the Transmission Fluid**
– **Locate the Transmission Pan:** The transmission pan is typically located at the bottom of the transmission.
– **Remove the Drain Plug:** If your transmission pan has a drain plug, use the appropriate socket to remove it and drain the fluid into an oil catch pan. If it doesn’t have a drain plug, you may need to carefully remove some of the bolts from the pan, allowing fluid to drain out. Be prepared for fluid spillage.
– **Clean the Area:** After draining, clean the area around the drain plug or pan to prevent contamination.

#### 3. **Remove the Transmission Pan**
– **Loosen Bolts:** Using the appropriate socket, remove all the bolts securing the transmission pan. Start from one side and work your way around the pan. Keep track of the bolts as they may be of different lengths.
– **Separate the Pan:** Gently pry the pan away from the transmission using a flathead screwdriver if necessary. Be cautious not to damage the mating surface. If it’s stuck, tap it lightly with a rubber mallet.

#### 4. **Remove the Old Gasket**
– **Inspect the Old Gasket:** Once the pan is removed, inspect the old gasket for any signs of wear or damage.
– **Clean the Surface:** Use a scraper or gasket remover tool to carefully remove the old gasket material from both the transmission and the pan. Be careful not to scratch the surfaces.
– **Degrease:** Clean the surfaces with brake cleaner or degreaser and wipe them down with a clean rag to ensure a good seal for the new gasket.

#### 5. **Install the New Gasket**
– **Position the New Gasket:** Place the new gasket onto the transmission pan. Some gaskets are designed to stay in place, while others may require a small amount of RTV silicone at the corners or edges. Follow the gasket manufacturer’s instructions.
– **Reattach the Pan:** Carefully position the transmission pan back onto the transmission, ensuring the gasket stays in place.

#### 6. **Reinstall the Transmission Pan**
– **Bolt the Pan:** Hand-tighten the bolts in a criss-cross pattern to ensure even pressure on the gasket. Once all bolts slightly.
– **Dispose of Old Fluid:** Properly dispose of the old transmission fluid and any materials used during the job.

### Conclusion

Replacing the transmission pan gasket on a Chevrolet Cobalt is a task that requires attention to detail and proper handling of tools and materials. Following the steps outlined above will help ensure a successful gasket replacement and proper functioning of the transmission. Always refer to the vehicle’s service manual for specific torque specifications and fluid types.
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