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

open rear hatch - no power.

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Old Jul 25, 2017 | 05:11 PM
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Default open rear hatch - no power.

Do C4's have a hatch release cable? I need to open the hatch, engine is out of the car. Dont want to cycle the key to accessories.
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Old Jul 25, 2017 | 06:59 PM
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My 84 does, it has a small cable under the plastic in the back
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Old Jul 25, 2017 | 07:37 PM
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Originally Posted by Powerstroked89
Do C4's have a hatch release cable? I need to open the hatch, engine is out of the car. Dont want to cycle the key to accessories.
No need to "cycle the key", simply connect the battery and you should have power to the hatch release buttons. Just ensure the battery cable at the starter is well insulated.
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Old Jul 25, 2017 | 09:00 PM
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You could also just do that /\ just make sure you pull your fuel pump fuse or you'll have gas every where!

Last edited by MikeP84; Jul 25, 2017 at 09:01 PM.
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Old Jul 25, 2017 | 09:23 PM
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There is a small steel cable under the carpet just below the hatch mechanism. Grab it with pliers and pull. I've pulled an engine in one of these, no way would i tape off everything and connect a battery.
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Old Jul 25, 2017 | 09:31 PM
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Probably could connect all the grounds to the battery and ground to frame but I would just play it safe and pull the cable

Last edited by MikeP84; Jul 26, 2017 at 03:04 AM.
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Old Jul 26, 2017 | 02:27 AM
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This should be enough to get your hatch open:

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Old Jul 26, 2017 | 06:42 AM
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I personally would not cycle the key. the ECM is grounded to the engine block (via the LH cylinder head). applying power to the ECM without a ground will damage some functions within the ECM itself. electrons are funny - they WILL seek out another path. don't let the metal case of the ECM fool you - that case is not a chassis ground, as I found out. spoken with real "dumb-***," hands-on experience!

to be on the safe side, just pull the emergency release cable.

Last edited by Joe C; Jul 26, 2017 at 09:03 PM.
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To open rear hatch - no power.

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