* Multiple Transmission Options: Chevy offered several different transmissions in their half-ton trucks during 1988. Some common options were:
* TH350: A 3-speed automatic transmission, known for its simplicity and reliability.
* TH400: A 3-speed automatic transmission with a higher torque capacity than the TH350.
* TH700R4: A 4-speed overdrive automatic transmission, becoming more common in later 1988 models.
* SM465: A 4-speed manual transmission, known for its strength.
* T5: A 5-speed manual transmission, offering better fuel economy than the SM465.
* Model Variations: The transmission used depends heavily on the specific model and trim level of your truck. For example, a base work truck might have a different transmission than a luxury-oriented trim level.
How to Identify Your Transmission:
1. Check the VIN: Your Vehicle Identification Number (VIN) can be used to determine the original equipment. You can use online VIN decoders or contact a local dealership.
2. Look at the Transmission Tag: Look for a tag on the transmission itself. It will typically have the transmission model number.
3. Check the Floor: If you have a manual transmission, the shifter will be on the floor. If it's an automatic, it will be mounted on the steering column or on the floor depending on the model.
Once you know the transmission model, you can find more information online about its specifications, common problems, and maintenance procedures.
