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1999-2006 GM Gen III 4.8, 5.3 & 6.0L  Harness Std. Length Throttle by Wire By Painless Performance

P/N 60221

1999-2006 GM Gen III 4.8, 5.3 & 6.0L Harness Std. Length Throttle by Wire

       
 

  • Application
  • Specs
  • Larger Image
  • ECM Re-Flash
Year: 1999 - 2006
Make: General Motors
Model: C & K Truck/SUV
Engine: 4.8L, 5.3L, 6.0L w/ Throttle By Wire
Trans.: 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual
Free ECM Flash American Made

 

This harness is designed for use on the 1999-2006 4.8L, 5.3L, 6.0L throttle by wire engines with  a 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual transmission. These engines were found in factory 2003-2006 Vortec Trucks. 1999-2002 engines will require installing a 2003-2006 TBW throttle body. Engine codes supported are LR4, LM7, LM4, LQ4 and LQ9. This harness will support flex fuel and non flex fuel engines. Flex fuel engines will require an inline fuel composition sensor in order to run E85 fuel. Included with this harness is a 10 circuit weatherproof fuse block & mounting bracket and GM color coded wires with labels for easy installation. 

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

Purchase this harness today and qualify for Painless Performance®™ to flash your ECM for free.  Click here for details.

We recommend checking the online manual for the full list of required mating parts prior to ordering.  

 

Number of Circuits: 10 Fuses with 2 Ignition, 1 Cooling Fan & 1 Fuel Pump Relay
Harness Length: 4 Feet Between Engine and ECM
Fuse Type: Mini Blade
Firewall Passthrough: Grommet
Color Code Based: 1999 - 2006 C/K Truck
Circuit Designations: Printed Wire Tags on all Connectors and Open Ended Wires

The Fuse Block Protects The Following Circuits:

  • Brake and Cruise Switch
  • Dual 40 amp Ignition Relays
  • ECM (IGN)
  • ECM B+
  • Fuel Injectors
  • Fuel Pump
  • Heated O2 Sensors
  • Ignition Coils
  • Mass Airflow and Fuel Compensation Sensor
  • Throttle Actuator Control Module 
  • Transmission and Park Neutral Position Switch
  • 20 Amp Cooling Fan Relay
  • 20 Amp Fuel Pump Relay

 

This harness includes connections for the following components:

  • A/C Request
  • Accelerator Pedal Position Sensor
  • Alternator 
  • Brake Switch
  • Cam Position Sensor
  • Cooling Fans
  • Crank Position Sensor
  • Cruise Control
  • Data Link Connector 
  • Driver/Pass Front O2 Sensors
  • ECM
  • Engine Coolant Temperature
  • Fuel Compensation Sensor
  • Fuel Pump
  • Fuel Pump Test 
  • Grounds 
  • Ignition Coils
  • Ignition Switch Signal
  • Injectors - Gas & Flex Fuel Sub-Harness
  • Input Speed Sensor
  • Knock Sensors
  • Malfunction Indicator Lamp
  • MAP Sensor
  • Mass Airflow / Intake Air Temperature Sensor
  • Output Speed Sensor
  • Park/Neutral Switch
  • Reverse Lights
  • Starter
  • Starter Relay Activation
  • Tachometer
  • Throttle Actuator Control Module 
  • Throttle Actuator Control Module to Accelerator Pedal Pigtail
  • Throttle Body 
  • Transmission
  • VSS Output for Speedometer
  • Knock Sensor Pigtail

 

 1999-2006 GM Gen III 4.8, 5.3 & 6.0L  Harness Std. Length Throttle by Wire By Painless Performance

 

 

ECM Flash Program

 

 

This is a basic start and run tune that we only recommend for a near stock application. We will only change the following parameters: delete VATS/PASS-KEY security, cooling fan on/off temperatures, rear end gear ratio, tire size, speed limiter, rpm limiter, idle rpm, and we will adjust the check engine light parameters. If your setup requires any other parameters tuned you will need to locate a local tuner. All ECMs are left unlocked to allow easy access for your tuner.

Step 1: Purchase one of the qualifying part numbers. See below for that list.


Step 2: If your part number is highlighted RED proceed to step 3B. If your part number is highlighted BLACK, proceed to step 3A.


Step 3A: If you have arrived at this step, your harness does not come with an ECM and you must provide one to be flashed. Please reference the manual with your harness to confirm the ECM part number required.


Step 4A: Once you have received your harness, please cut the Barcode label from the box as shown in the picture below.


Step 5A: Package and mail your ECM along with the Barcode label, a copy of your purchase receipt, and your ECM form that you are about to complete. (The address will be provided after you complete the form). We will pay for return ground shipping*. If you request a faster service, you will need to provide a return label.


Step 3B: If you have arrived at this step, your purchase comes with an ECM. You must fill out our ECM form BEFORE your purchase will ship. Proceed to Step 6.


Step 6: Click the “Start Here” button below to fill out our ECM questionnaire.


Step 7: Once we have the ECM, we will use the data from the form to flash the ECM. Then, once it has been flashed we will package the ECM and ship it back to you. If we encounter a question, we will contact you. This process can take 1-3 days.


Step 8: Once you receive your ECM, it is ready to go.

 

*Note: Our free return shipping is ONLY good for the lower 48 states, via ground UPS. If you are outside of those states, you must provide a return shipping label with your order. If your purchase comes with an ECM, the shipping will be covered via the retailer you purchased from.

 

 

Click the Start Here button below to get your FREE ECM Flash!

Click Here To Start The ECM Reflash Process

 

End Panel


APPLICABLE PAINLESS PART NUMBERS

60008

   

60522

60009

   

60523

60017

   

60524

60026

   

60526

60217

   

60608

60218

   

60617

60221

   

60700

60508

   

60701

60509

   

60702

60520

   

60710