Sierra 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
Equivalents - Decimal and Metric 2
Diagnostic Work Sheets
Diagnostic Work Sheets
The GM Diagnostic Worksheet has been designed to improve communications between the service customer and the technician. The diagnostic
worksheet can provide the technician with more information than the conventional repair order, since it is filled out by the service customer. Dealers in
the US may contact Dealer Support Materials at 1-800-235-8521 and request Form Number DWS-01 to obtain these worksheets at no cost. Dealers
may also access the DWD Store in Dealerworld and search for form DWS-01 or select Service Forms under Other Links and then select Diagnostic
Worksheet (under Bulletin Information on use of Diagnostic Worksheet). Please limit your requests to a reasonable quantity.
Fasteners
Fasteners
Metric Fasteners
This vehicle provides fastener dimensions using the metric system. Most metric fasteners are approximate in diameter to equivalent English fasteners.
Make replacements using fasteners of the same nominal diameter, thread pitch, and strength.
A number marking identifies the OE metric fasteners except cross-recess head screws. The number also indicates the strength of the fastener material.
A Posidrive or Type 1A cross-recess identifies a metric cross-recess screw. For best results, use a Type 1A cross-recess screwdriver, or equivalent, in
Posidrive recess head screws.
GM Engineering Standards and North American Industries have adopted a portion of the ISO-defined standard metric fastener sizes. The purpose was
to reduce the number of fastener sizes used while retaining the best thread qualities in each thread size. For example, the metric M6.0 X 1 screw, with
nearly the same diameter and 25.4 threads per inch replaced the English 1/4-20 and 1/4-28 screws. The thread pitch is midway between the English
coarse and fine thread pitches.
Fastener Strength Identification
