C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Jul 4, 2009 | 03:53 PM
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The cruise control on my 93 w/145000 miles has been working fine. Driving home today I went to set it and nothing. Checked the fuse, it is OK. Where is the best place to start trouble shooting?
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Old Jul 4, 2009 | 03:55 PM
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Look for cracked, leaking , or broken hoses in the vaccum system. Should be located in the area just behind your drivers side tire / wheel well.
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Old Jul 4, 2009 | 04:31 PM
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There is a vacuum check valve under the rear of the passenger side fuel rail cover. It might be bad.

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Old Jul 4, 2009 | 05:53 PM
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Check the above, and the brake and / or clutch pedal switches. Also, remove the harness from the servo, clean the contacts on both thoroughly, and reassemble with dialectric grease. If that doesn't work, it's time to go through the troubleshooting section in the factory service manaul.

If you don't have the FSM, you can buy them from Helm or have someone on here who owns your year model walk you through it.
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Old Jul 4, 2009 | 07:11 PM
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Lucky me my fsm is in the mail. Just ordered one last week for my heater core replacement. thanks. The joys of old cars.
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