To find the TPS on *your* specific Chevy diesel, you'll need to:
1. Identify your engine: Find the engine displacement (e.g., 6.6L) and year of your vehicle. This information is usually on a sticker under the hood or in your owner's manual.
2. Consult a repair manual: A repair manual specific to your year and model will show you a diagram of your engine and pinpoint the location of the TPS. You can find these online (often as PDFs) or at auto parts stores.
3. Use online resources: Search online using your specific vehicle details ("TPS location 2020 Chevy Silverado 6.6L Duramax," for example). Pictures and forum discussions might help you locate it.
Without knowing the specific year, make, and model of your Chevy diesel, it's impossible to give a precise location.