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Drum Brake Specifications

WARNING: This page does not describe the selected car, but rather 46 other vehicles, including the 2001 Pontiac Montana, 2001 Pontiac Aztek, 2001 Oldsmobile Silhouette, 2001 Oldsmobile Bravada, and 2001 GMC Sonoma. However, it is still accessible from the selected car via links, so may be relevant.
DRUM BRAKE SPECIFICATIONS

Application In. (mm)
Astro, Safari, & "S" & "T" Series
Drum
Original Diameter 9.50 (241.3)
Discard Diameter 9.59 (243.6)
Maximum Allowable Diameter After Refinish Diameter 9.56 (242.8)
Width 2.00 (50.8)
Aztek
Drum
Discard Diameter 9.902 (251.5)
Maximum Allowable Diameter After Refinish Diameter 9.882 (251.0)
Allowable Radial Runout (Maximum) .006 (.015)
Allowable Scoring (Maximum) .06 (1.5)
Express & Savana
Drum
Original Diameter
1500 & 2500 Series 11.15 (283.2)
2500 (Diesel) & 3500 13.00 (330.2)
Discard Diameter
11.15" Drum 11.24 (285.5)
13.00" Drum 13.09 (332.5)
Maximum Allowable Diameter After Refinish
11.15" Drum 11.21 (284.7)
13.00" Drum 13.06 (331.7)
Width
11.15" Drum 2.75 (69.9)
13.00" Drum 2.50 (63.5) Or 3.50 (88.9)
Montana, Silhouette & Venture
Drum
Original Diameter 8.86 (225.0)
Discard Diameter 8.92 (226.6)
Maximum Allowable Diameter After Refinish Diameter 8.91 (226.3)
Wheel Cylinder Diameter .937 (23.80)