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Does anyone out there have a vacuum diagram for a 1974 coupe with the L-48? I bought the shop manuel but it does'nt seem to have one! Any help would be appreciated!
Try this. Applies to all C3s newer than those with vacuum operated wiper doors. Hoses to headlight relays and actuators have stripes matching colors in the diagram. Notice the correction note on the diagram as this one shows how the under dash hoses really must be connected. There are others out there that do not have this correction.
Here's a link to a nice vacuum system troubleshooting page:
You mention 'shop manual', do you mean GM Chassis Service Manual?
The vacuum information is in Section 12. Look for 'Corvette HeadLight Service' in the index.
Regards,
Alan
The AIM is the ASSEMBLY INSTRUCTION MANUAL.
It's about 400 pages of drawings with parts and part numbers called out. It was used in the factory on the production line as reference for building the cars. Yes, although it doesn't seem like it, they actually knew what they were doing.
Along with the GM CHASSIS SERVICE MANUAL, it should be in any garage with a 30 + year old car.
Many vendors (Wilcox) have them. There is one for each year.
Regards,
Alan
Here is the link to the AIM on CD. I think most will agree this is one of the best books to use on your car. It is full of assembly instructions like Paul posted above, it's on CD and can be searched with Acrobat Reader.