To Keep It Up to Dute The GMC Master Parts Book replacement page service is designed to help obtain maximum usefulness from your parts book In the simplest and easiest manner your parts book will be kept up to the minute with factory additions and changes of part numbers This replacement page service will provide periodic ally Replacement Pages to keep your Parts Book accurate and up to date This replacement page service should be ordered thru your zone If Your Parts Book Is Not Up to Dcste You will not have all of the new items listed for service You may be ordering an old type part on which a new type part is released and vvil he receiving incorrect material resulting in reordering returning and delay You may delay repair of a vehicle by waiting for parts which you may have in stock under a different part number 7