What size Allen wrench to remove 1997 Pontiac Transport caliper?

The size of the Allen wrench (hex key) needed to remove a 1997 Pontiac Transport caliper bolt varies. There's no single definitive answer. It's highly likely to be either a 7mm or an 8mm Allen wrench.

To be certain, you should:

* Consult your owner's manual: This is the best source of information.

* Look at the caliper bolts themselves: Before attempting to remove anything, visually inspect the bolts to see what size Allen wrench they require. You can compare them to a set of Allen wrenches to find the right fit.

* Use a set of Allen wrenches: Having a complete set allows you to try different sizes until you find the one that fits. Starting with a 7mm and then trying an 8mm is a good approach.

Important Safety Note: Before working on your brakes, make sure the vehicle is properly secured (parking brake engaged, wheel chocks in place), and wear appropriate safety glasses. If you are not comfortable working on brakes yourself, consult a qualified mechanic.