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Thread: 94 ls1 swap questions

  1. #1
    Join Date
    Oct 2009
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    94 ls1 swap questions

    hey guys, I live in the phoenix area and the only issue I have right now is how am I going to get the factory gauges to work along with the check engine light? I know the motor will pass the sniffer test, but I don't think they would pass me with aftermarket gauges. any info on the wiring harness would be helpful
    1994 gmc sierra SS custom. haha
    coming soon. built LS1 with procharger, poss 6 speed swap.

  2. #2
    Join Date
    Nov 2003
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    Denton Texas
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    use the stock gauges with the stock wiring and sensors on the engine.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Feb 2007
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    Quote Originally Posted by RedHeartbeat View Post
    use the stock gauges with the stock wiring and sensors on the engine.
    Word

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  4. #4
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    Quote Originally Posted by philv View Post
    hey guys, I live in the phoenix area and the only issue I have right now is how am I going to get the factory gauges to work along with the check engine light? I know the motor will pass the sniffer test, but I don't think they would pass me with aftermarket gauges. any info on the wiring harness would be helpful
    your SES light is a brown wire (if it is the same as a truck harness). I just checked for a LS1, but apparently the years are different. What year is your motor/harness? With a 94, your speedo should be electric, and it should be as simple as connecting your cluster wires to the new senders.

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