NHTSA ID Number: 10154599
Manufacturer Communication Number: PIT5326C
Summary
This Preliminary Information communication provides information to the technician about the Upfitters questions about installing aftermarket electrical accessories. Dealer should reference the latest version of General Motors
Upfitter Integration Bulletin 115 for this information. It can be found at https://www.gmupfitter.com.
30 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | SILVERADO 1500 | 2014-2018 |
| CHEVROLET | SILVERADO 2500 | 2015-2019 |
| CHEVROLET | SILVERADO 3500 | 2015-2019 |
| GMC | SIERRA 1500 | 2014-2018 |
| GMC | SIERRA 2500 | 2015-2019 |
| GMC | SIERRA 3500 | 2015-2019 |
SEOCONTENT-START
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Bulletin No.: PIT5326C
Published date: 12/17/2018
Preliminary Information
PIT5326C Installation of Electrical Aftermarket Accessories (Battery Ignition and Ground Connections)
Models
| Brand: | Model: | Model Years: | VIN: | Engine: |
Transmissions: |
|
| from | to | |||||
| Chevrolet |
Silverado 1500 | 2014 | All | All | All | All |
| Chevrolet |
Silverado | 2015 – 2018 | All | All | All | All |
| Chevrolet |
Silverado 2500/3500 | 2019 | All | All | All | All |
| GMC | Sierra 1500 | 2014 | All | All | All | All |
| GMC | Sierra | 2015 – 2018 | All | All | All | All |
| GMC | Sierra 2500/3500 | 2019 | All | All | All | All |
Supersession Statement
This PI was superseded to add the 2019 models. Please discard PIT5326B.
Condition / Concern
Upfitters/owners may question where they can install their aftermarket electrical accessories.
Provisions have been provided for the installation of electrical accessories without splicing or cutting into the factory wiring harness. Please reference the latest version of GM Upfitter Integration Bulletin 115 for this information. It can be found at https://www.gmupfitter.com/, under the “Technical Bulletin” Tab and then “Show all bulletins.”
IMPORTANT: It is very important that electrical accessories be installed properly and not spliced or cut into the factory wiring harness.
SEOCONTENT-END
UI Bulletin #115f
General Motors Upfitter Integration
Bulletin #115f May 4, 2018
https://www.gmupfitter.com/files/media/photo/937/UI%20Bulletin_115f.pdf
Bulletin No.: PIT5326C
Published date: 12/17/2018
Bulletin No.: PIT5326B
Published date: 12/6/2017
Bulletin No.: PIT5326A
Date: Dec-2016
Bulletin No.: PIT5326
Date: Sep-2014
Bulletin No.: PIT5326
Date: September, 2014
- Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding your electrical components from potential damage.
- Small size/Low power consumption/High contact voltage/ High sensitivity.
- Contact Material: Ag Alloy / Contact Resistance: ≤ 100MΩ.
- Minimum operating voltage 8V, corresponding minimum operating current is 100mA; Standard operating voltage 12V, corresponding standard operating current is 150mA.
- Life Expectancy Electrical: 100,000 Operation, Life Expectancy Mechanical: 10,000,000 Operation.
- Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for
- 12-volt 5-prong (SPDT) relay. Excellent water-repellent and dustproof ability, but do not use it in water
- Be careful when inserting the relay into the socket. If you force it, you will bend the female connectors
- Primary leads use 12 a.w.g tinned copper wire. Coil leads use 16 a.w.g
- Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum Applied Voltage: 15.6 V DC
- High switching capability: Normally open 40A/14V DC and normally close 30A/14V DC. Suitable for Nilight LED light bar wiring harness kit
- Premium quality: Durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan
- Male-female slot design: Unique male-female slot design, easy to connect the relay with harness socket, clean and neat after installation
- Easy wiring: The relay sockets come with different colors for loads/accessories, simple and convenient wiring
- Package include: 5 x relay and 5 x relay socket with wires.Fit type: Universal fit
- Rated Coil Voltage: 12V DC; Max. Rated Switching Current: 40A; Coil Power: 1.8W; Coil Resistance: 80 Ω
- Never exceed its capabilities. Try to stay 10 to 15% below the rated value. Please note the size (1.37 x 1.65 x 9 inches)! It may be too large for some applications
- Tinned copper wire has good conductivity and corrosion resistance, and is more resistant to oxidation
- Wire Specifications: Black 16AWG - Ground (85), Red 14AWG - VDC (30), White 16AWG - Trigger (86) and Blue 14AWG - Output N/O (87)
- The relay and wiring harness are well sealed, with excellent waterproof and dustproof performance, and plug and play
- 【6 Way Relay Box】 - This 12v relay box features 6 dedicated slots for neat and organized relay installation, keeping your wiring system tidy. Easily replace a faulty relay individually without disturbing the entire setup, minimizing maintenance hassle.
- 【Integrated Fuse Block】 - Equipped with 6 fuse slots, the 12 AWG pre-wired relay box allows you to install compatible fuses for each circuit, providing dual protection against overcurrent. Fuses blow first to safeguard your devices from damage, ensuring electrical safety.
- 【Pre-Wired & Color-Coded】 - This factory-prewired fuse relay block features color-coded wires (e.g., red for power, black for ground, blue for signals) for intuitive connections. The high-power relay side is equipped with 12AWG heavy-duty wires, capable of safely handling up to 20A continuous current while reducing heat buildup.
- 【Splash & Dust Resistant】 - This relay box is sealed with a durable top cover and rubber gasket, blocking dust, splashing water, and light rain (not fully submersible). Ideal for harsh environments like engine bays, marine setups, or outdoor applications, it protects against corrosion and short circuits for reliable performance.
- 【Universal 12V Application】 - Designed for 12V systems, this 6 way relay fuse box is perfect for automotive, truck, marine, RV, and DIY projects, ideal for controlling lights, pumps, motors, or other accessories. Its modular design streamlines complex wiring for improved reliability.
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