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Classic/Antique Car Repair/84 chevt p/u master cylinder

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Expert: - 8/2/2008


Question
got an 84 chevrolet p/u.went to part store to buy a master cylinder .they told me they needed a code off my vehicle .JB3,jb5,or JB1..for the correct one .cant find any numbers on the truck to match this code. looked on their computer they all looked the same. where do i go from here ?

Answer
There should be a decal on the inside of the glove box door that is a Service parts ID sticker. The number that they are asking for should be listed there. The next best is the 17 didget VIN. My local NAPA has been able to get parts for me using that. The 4th diget in the VIN is the GVWR/Brake system code and they should have that broken down in their manual. The 6th didget is the truck series, K for 4 wheel drive and C for conventional pick up. I hope that this helps.
Brad Sears

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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