Is the water pump on 1996 Buick Lesabre same as a Pontiac Bonneville of year?

While both the 1996 Buick LeSabre and Pontiac Bonneville shared the same GM platform (W-body), it's not guaranteed that their water pumps are interchangeable. While many parts *are* the same or very similar between these two cars, there's always a chance of slight variations due to engine differences or other manufacturing specifics.

To be absolutely certain, you should:

* Check the part numbers: Find the part number for the water pump on your LeSabre (usually found on the pump itself or in a parts catalog) and compare it to the part number for a 1996 Bonneville water pump. Identical numbers mean they're likely interchangeable.

* Consult a parts catalog: Use a reputable online parts retailer (like AutoZone, Advance Auto Parts, etc.) and search for water pumps by vehicle year, make, and model. Compare the listings to see if they offer the same part number for both cars.

Don't rely solely on the shared platform as a guarantee of interchangeability. Always double-check part numbers to avoid potential issues.