The caliper Allen bolts on a 1993 GMC typically use a 5/32-inch or 4 mm Allen wrench. However, sizes may vary slightly depending on the specific model and brake system. It's always best to check the vehicle’s service manual or consult with a parts supplier for the exact specifications.
"Caliper anchor bolts" hold the brake caliper on, they require a 3/8" Allen wrench to remove.
3/8 inch allen.
Most likely 3/8 Allen for caliper this truck.
I thought my system had star bolts, not Allen bolts. You may need star wrenchs. I think mine were 10mm stars
t55 torx t55 torx
That is a 3/8 Allen.
18mm
3/8"
A 3/8 Allen key.
I believe that's a 3/8 allen wrench, but it's a really simple matter to get under the vehicle and try different wrenches on until you find the correct one. Many calipers are held on with a 3/8 allen bolt, but some are 10mm and some even 1/2 regular bolt.
What size is the starter bolt on 6.5 turbo diesel starter?
Either 10mm or 3/8"