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

Bulb Replacement Question

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Old Mar 18, 2005 | 03:41 PM
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94blue6spd's Avatar
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Default Bulb Replacement Question

On my 94 vette the ASR/off light does not come on when I push the button. The ASR it self does work so i'm guessing it's only a bulb that needs replacement.

Now my question to you guys is what type of bulb is in there? Part number? Also has anyone replaced that bulb back there? Hope it's not too involved. Any and all help is greatly appreciated.
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Old Mar 18, 2005 | 10:04 PM
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Not to hijack your thread, but my service engine soon light never comes on even when I do the grounding of pins trick. Could this be a burned out bulb? I too am interested in part number if anyone has done this.
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Old Mar 18, 2005 | 10:43 PM
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Bulb numbers: ASR "OFF" & SERV ENG SOON use #74-1.
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Old Mar 23, 2005 | 02:32 PM
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anyone know what bulb i need???????????
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Old Mar 23, 2005 | 03:56 PM
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Originally Posted by k99ja04
service engine soon light never comes on. I too am interested in part number if anyone has done this.
Both the Service Engine Soon and the ASR/OFF bulb are type 74.

The bulbs mount in a socket holder. A slight twist on the holder releases it from the back of the circuit board.

Just unbolt the Driver Information Center and the look at the back of the unit.

Last edited by Hooked on Vettes; Mar 23, 2005 at 04:05 PM.
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Old Mar 24, 2005 | 02:44 PM
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thanks so much
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Old Mar 25, 2005 | 01:18 AM
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74 bulb is also in other parts of the car too like the night door lights. Anway the headlight assembly isnot too hard to takc out except the bezel around to gauge area has to come out to get the screw on the left side of the assembly.
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