* Check the vehicle's sticker: Look for a sticker, often located on the driver's side doorjamb or the glove compartment, that lists the GVWR. This is the most reliable source.
* Consult the owner's manual: If you have the original owner's manual, it will specify the GVWR for that specific vehicle configuration.
* Check a parts catalog: A parts catalog specific to 1988 Chevy K5 Blazers might list the GVWR for different trim levels and options.
Without knowing the specific trim level (e.g., 4x4, engine size, etc.) of the 1988 Chevy K5 Blazer, it's impossible to give a precise GVWR. However, you can expect it to be in the range of 4,500 to 5,500 lbs (approximately 2,041 to 2,495 kg). This is a broad estimate, and the actual GVWR could be higher or lower depending on the options.