Crocker Bank Building
15760 Ventura Blvd.
Encino, California 91436
Phone: (213) 981-7300
Regional Manager: G. J. Dunneback
Service Manager: W. K. Clark, Jr.
Prior to this call, have the following information available:
Name and location of distributor or dealer.
Type and make of equipment.
Engine model and serial number.
Engine delivery date and accumulated
miles or hours of operation.
Nature of problem.
Chronological summary of unit's history.
Step Three - If you are still not satisfied, present the entire matter in writing or by phone to the Home Office:
Diesel Operations - J. E. Fisher, Manager Customer Services, Detroit Diesel Allison, 13400 W. Outer Drive,
Detroit, Michigan 48228, Phone (313) 592-5608.
Canada Operations - E. A. Kobe, Manager of Product Service, Diesel Division, General Motors of Canada, Ltd.,
P.O. Box 5990, 847 Highbury Avenue, London, Ontario N6A 4L6, Phone (519) 455-7110.
If at this point your problem is still not resolved to your satisfaction, call or write J. P. Lewis, Manager, Diesel
Engine Service, Diesel Operations (313) 592-7279; D. F. Downham, Sales Manager, Diesel Operations
When contacting the Regional or Home Office, please keep in mind that ultimately your problem will likely be
resolved at the distributorship or dealership utilizing their facilities, equipment and personnel. Therefore, it is
suggested that you follow the above steps in sequence when experiencing a problem.