This manual is a licensed reproduction of a set of the Serviceman bulletins printed by Cadillac to help mechanics at the dealer repair cars. If you've got the factory shop manual for your Cadillac, you've only got half the story – this set has repair instructions that mechanics found that they needed after the shop manual was printed, and mid-year changes that aren't accounted for in the shop manual. There is parts and service info for accessories, body, brakes, transmission, engine, cooling system, electrical, lubrication, suspension, steering, tools, and more. Buy now to own this hard-to-find service information.

There are too many topics to list them all, but here's a sampling:

new 1966 features

revised light bulb chart
erratic operation of automatic climate control

adjust the temperature dial after installing Automatic Climate Control
early 1966 heater hose routing

cold weather protection for automatic level control system
binding governor weights on some cruise control units
why fuses blow in the cruiser control unit
reducing over-travel of 1966 shift linkage

correcting manual shaft binding problems on transmissions

accurate idle settings on A. I. R. equipped cars and adjustment of 1966 Carter A.I.R. carburetor
brake roughness
check ignition harness and leads at starter
use jumper at stator switch for idle setting
hazard warning flasher troubles
venting power window motors
power window regulator motor replacements
front door window glass scratches
windshield fogging
loose or binding headrests
servicing seat back components on Fleetwood Brougham sedan
seat belt retractors
front seat shoulder strap provisions
increasing seat warmer "on" time
hint on servicing door paddle handle
filling convertible hydro-electric reservoir
correcting ballooning fabric roof cover
sheet metal tolerances

shop manual revisions and corrections: wiring diagram changes, servicing the seat warmer, diagnosing air compressor leaks, control valve service, rear axle shaft length corrected, as well as standing height and coil spring revisions,

mid-year parts changes: change in piston diameter sizes, differential pinion nut sizes, early 1966 Automatic Level Control air compressors should be replaced, fuel tank vent, Fleetwood 75 rear quarter panel crest, transmission case and governor, change to "Antique Gold" paint formulation, transmission cover-to-body attaching bolts, steering column lower cover screw, and rear lamp socket seals