LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Mechanical - 4.3L (LV1)) >> Specifications >> Thread Repair Specifications >> Engine Block - Left/Right Side Views

Engine Block - Left/Right Side Views

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
GM3632669Courtesy of GENERAL MOTORS COMPANY
Engine Block - Left/Right Side Views

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
Standard Bolts J-42385-
1 M8 x 1.25 210 206 207 208 209 23.0 (0.907) 23.0 (0.907)
2 M10 x 1.25 420 211 212 213 214 34.0 (1.35) 34.0 (1.35)
3 M8 x 1.25 61 206 207 208 209 29.0 (1.14) 29.0 (1.14)
4 M12 x 1.75 865 856 857 858 859 16.0 (0.629) 16.0 (0.629)
5 M12 x 1.75 62 856 857 858 859 23.0 (0.907) 23.0 (0.907)
Head Bolts EN-42385-
6 M12 x 1.75 58 51 N/A 52 53 58.0 (2.28) 58.0 (2.28)
Refer to Thread Repair  for head bolt thread repair hardware and procedure.