Do you have to lift the engine replace an oil pan on a 31 liter v6 in Pontiac sunbird?

It's highly unlikely you'll need to lift the entire engine to replace the oil pan on a Pontiac Sunbird with a 3.1L V6. While access might be tight, it's generally considered a job that can be done with the engine in place. You'll likely need to:

* Lower the subframe: This is often necessary to gain sufficient clearance.

* Remove various components: This will include things like the skid plate, exhaust components, potentially some suspension bits, and possibly parts of the front cover depending on how much the oil pan interferes with them.

However, the exact procedure depends on the specific year of your Sunbird and any modifications the car might have. Consulting a repair manual specific to your year and model is essential. These manuals provide detailed instructions and diagrams showing exactly what needs to be removed.

In short: No, you almost certainly don't need to lift the entire engine. But substantial work underneath is expected.