Most likely transmissions:
* 4L60E: This 4-speed automatic transmission was very common in S10 Blazers of that era, particularly with the V6 engines. This is your *most likely* candidate. Finding a used 4L60E from a similar year S10, Jimmy, or even a compatible GM vehicle (like a Camaro or full-size truck) should be relatively easy.
* Manual Transmissions: Several manual transmissions were offered, but finding a direct replacement can be challenging due to the lower production numbers of manual-equipped S10 Blazers. The specific manual transmission depends heavily on the engine. You'd need the engine code to find the correct one.
Less likely but possibly compatible (requiring modifications):
It's *highly unlikely* you'd find a direct bolt-in replacement outside the above, but some enthusiasts *might* adapt transmissions from other GM vehicles, requiring significant modification to the transmission mounts, driveshaft, and potentially the bellhousing. This is a considerable undertaking for experienced mechanics only.
Finding the correct Transmission:
1. Identify your engine: This is the most crucial step. Find the engine code (e.g., 4.3L Vortec V6 would have a specific code).
2. Check the VIN: Your vehicle identification number contains crucial information to determine the original transmission. A parts store or online VIN decoder can provide details.
3. Consult a parts store or mechanic: Provide the year, make, model, engine code, and original transmission details (if known) to get a definitive answer on compatible replacements.
In short: Focus on finding a used 4L60E from a similar-year GM vehicle. Anything else will likely require extensive modification and expertise. Get the engine code to narrow down your options significantly.
