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GM Vortec Fuel Injection Wiring Harness

Painless 60217 Vortec fuel injection wiring harness.

For installations of 1999 - 2006, mechanical throttle body, Gen3 (4.8L - 5.3L - 6.0L) engines using ECMs with service #12200411 or #9354896.

Engine codes supported are LR4, LM7, LM4, LQ4 and LQ9.

2003-2006 engines require the factory installed throttle by wire throttle body to be changed to a cable throttle type.

Harness includes all connections for fuel injection operation:








Injector connections

Coil connections






4L60E & 4L80E Transmission connections

Front Bank 1 & 2 O2 Sensors.

Emissions connections included in harness include:

Secondary air pump

Secondary air solenoid


Canister vent and Canister purge.

Harness incorporates its own 8 circuit fuseblock with ignition relays and connection to factory style fuel pump relay.

This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount.

Perfect for those that plan to mount these components under the dash or in the glove box.

This kit includes:

1. All new fuel injection harness with OEM fitment connectors and harness breakouts

2. OBDII connector, mounting bracket and check engine light

3. Crimp-on terminals, rubber grommet

4. Mounting hardware

5. Installation manual

Painless Performance engineers have worked out all the potential problems ahead of time so all you have to do is follow the straightforward instructions and you're on your way.

Every wire is color-coded and labeled for ease of installation.

TECH NOTE: Must reprogram PCM.

TECH NOTE: This harness will not work with the throttle by wire setup. The engine must be converted to a mechanical throttle.

TECH NOTE: This harness does not support flex-fuel engines.

TECH NOTE: The PCM programming should match the engine and transmission combination and may required modifications to turn off the check engine light.

Painless Performance 60217 GM 4.8L 5.3L 6.0L fuel injection wiring harness PAINLESS-PERFORMANCE-60217$715.99
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