Auxiliary Switches are Inoperative – 2015-2016 Chevrolet Silverado & GMC Sierra

SEOCONTENT-START

GM Bulletin No.: 15411
Date: June 2015

Subject:	Service Update for Inventory and Customer Vehicles Underhood Electrical Center (UEC) Missing Fuses and Relays Expires with Base Warranty
Models:	2015-2016 Chevrolet Silverado
	2015-2016 GMC Sierra
	Equipped with Accessory Wiring Junction Block (RPO 9L7)

This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason.  This bulletin will expire at the end of the involved vehicle’s New Vehicle Limited Warranty period.

PURPOSE

This bulletin provides a service procedure to install fuses and relays as required in the Underhood Electrical Center (UEC) on certain 2015 model year Chevrolet Silverado and GMC Sierra vehicles equipped with an accessory-wiring-junction-block (RPO 9L7).  These vehicles may have missing fuses and relays.  The customer may notice that the auxiliary switches are inoperative after the function is added to the vehicle.

This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.

VEHICLES INVOLVED

All involved vehicles are identified by VIN in the Global Warranty Management System – Investigate Vehicle History Application.  Dealership technicians should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs.  It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.

Additionally, a list of involved vehicles currently in dealer inventory is available on the “Service Update Bulletin Information” link under the “Service” tab in GM GlobalConnect (US) or attached to the GlobalConnect message (Canada) used to release this bulletin.  Customer vehicles that return for service, for any reason, and are still covered under the vehicle’s base warranty should also be checked for vehicle eligibility.

PART INFORMATION

Parts required to complete this service update are to be obtained from General Motors Customer Care and Aftersales (GMCCA).  Please refer to your “involved vehicles listing” before ordering parts. This part will be on Order Writing control initially and all DRO’s (Daily Replenishment Orders) will cancel.   Dealers can place orders CSO (Customer Special Order).  In emergency situations a dealer should place a SPAC case and the orders will be processed in the order received.

Part Number	Description	Quantity/ Vehicle
19209790 Mini Fuse Instrument panel, micro 2-blade, 5 amp. Buy on Amazon Price incl. tax, excl. shipping Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API	Fuse (5A)	2
19209796 GM 19209796 FUSE,WRG HARN Engine compartment, with 32 Volt, 30 amp. Engine compartment, micro2, 30 amp. Instrument panel, micro 2-blade, 30 amp. Engine compartment, micro 2-blade, 30 amp. $6.48 Buy on Amazon Price incl. tax, excl. shipping Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API	Fuse (30A)	4
19116057 ACDelco GM Original Equipment D1786C (19116057) Gray Multi-Purpose Relay Work with vehicle electronics to help optimize vehicle capabilities GM-recommended replacement part for your GM vehicle’s original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function $14.72 Buy on Amazon Price incl. tax, excl. shipping Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API	Relay	4

Service Procedure

This service procedure covers the installation of six fuses and four relays in the Underhood Electrical Center (UEC). These components are required for functionality of the RPO 9L7 Auxiliary Switch Panel located in the center of the Instrument Panel.

1. Remove the cover from the Underhood Electrical Center (1).

Note: UEC fuse block component locations viewed from left side of vehicle

Note: UEC fuse block before fuse and relay installation

Note: UEC fuse block after fuse and relay installation

Note: Firmly insert components directly from the top, (Do not wiggle).

2. Locate fuse positions 22 and 27 circled in purple.
3. Install the two tan 5A fuses.
4. Locate fuse positions 23, 30, 32, and 37 circled in green.
5. Install the four green 30A fuses.
6. Locate relay positions 60, 61, 62, and 65 circled in red.
7. Install the four gray HIPWR relays in their correct orientation.
8. Install the UEC cover, and close the hood.

WARRANTY TRANSACTION INFORMATION

Submit a transaction using the table below.  All transactions should be submitted as a ZFAT transaction type, unless noted otherwise.

DEALER PROGRAM RESPONSIBILITY

Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be sure the service update correction has been made before selling or releasing the vehicle.

SEOCONTENT-END

Bestseller No. 1

JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + Puller – Replacement for RV Camper Boat Truck (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A)

• 【Meet all your needed size】-- The fuse kit includes micro size 50pcs, mini size 160pcs and standard size 90pcs. Three styles of auto fuses have 11 current specifications (2A /3A / 5A/ 7.5A/ 10A/ 15A/ 20A/ 25A / 30A/ 35A/40A), equipped with a fuse puller.(Not including micro2 fuse.)
• 【Reasonable quantity matching】-- We increase the number of fuses with commonly used current specifications of 10A/ 15A/ 20A/ 25A, and reduced other kinds of fuses, the fuse assortment can serve as a backup fuse box for cars.
• 【High quality and wide application】-- The fuse is made of environmentally friendly plastic and zinc alloy. The blade fuses are suitable for cars ,RV, truck, motorcycles, boats,SUV, ATV, UTV, Camper RV, Motorcycles, etc.But not for(Ford F,2014 Ram 1500,Hyundai Tucson 2018,RAM 2500,2016 jeep cherokee).
• 【Easy to identify】-- The car fuses of each current specification are distinguished by different colors, and the current specification number is marked on the top of each automotive fuses, which is easy to identify.
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182PCS Car Fuses Assortment Kit, Professional Blade Fuses Automotive - Standard & Mini & Low Profile Mini Fuse (5A/7.5A/10A/15A/20A/30A/40A), cooclensportey Mixed Auto Fuse for Boat, Auto, RV, Truck

• ALL SIZES YOU NEED - The fuses automotive kit covers 182pcs commonly used blade fuses and a fuse puller - 63pcs Standard: 5A/ 7.5A/ 10A/ 15A/ 20A/ 30A/ 40A (9PCS of each model ), 56pcs mini: 5A/ 7.5A/ 10A/ 15A/ 20A/ 30A/ 40A (8PCS of each model ), 63pcs Low Profile Mini: 5A/ 7.5A/ 10A/ 15A/ 20A/ 30A/ 40A (9PCS of each model )
• HIGH QUALITY - The auto fuse is made of Premium zinc alloy terminals for corrosion resistance and enhanced conductivity. The fuse assortment comes with a storage box, easy to store and carry
• EASY TO IDENTIFY - The blade fuses of each current specification are distinguished by different colors, also clearly marked with amperage, which is easy to identify. Please use the right amp fuse to protect the vehicle and electronic equipment from short-circuit/overload
• WIDE APPLICATION - variety of sizes that are commonly used in most of vehicles. This fuse kit can be used on Cars, Truck, SUV, ATV, UTV, Camper RV, Motorcycles, etc
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140 Pcs Fuses Automotive Kit - Blade Auto Fuse Assortment Standard and Mini Car Fuse for Marine, RV, Camper, Boat, Truck (5A 7.5A 10A 15A 20A 25A 30AMP/ATC/ATO)

• Easy Identification: Made of a high quality zinc alloy, with a transparent cover and color coded
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• Wide Applications: Fits most vehicles like car, truck, marine, SUV, travel trailer and other vehicles
• Note: Please use the right amp fuse to protect the vehicle and electronic equipment from short-circuit/overload
• ll Sizes You Need: The package contains 140pcs fuse and 2pcs fuse puller - 70pcs standard fuse and 70pcs mini fuse. (10pcs of each AMP)

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YNZDRWA 80Pcs Standard Fuse Kit, Upgraded Car Fuses Assortment Kit - Standard Size(3A/5A/7.5A/10A/15A/20A/25A/30A/35A/40A), Fuses Automotive kit for Cars, Trucks, Motorcycle, Camper, SUV

• 【STANDARD (ATO/ATC) SIZE ONLY】Dimensions: 0.752IN × 0.728IN × 0.2IN. Not compatible with Mini, Low-Profile Mini, Micro2 or Maxi fuses. Please verify your original fuse size and amperage before ordering to avoid fit issues
• 【COMPLETE STANDARD FUSE KIT】 The automotive fuse kit includes 80pcs of commonly used standard fuses: 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, 35A, 40A (8pcs of each). Each fuse is color-coded and marked with its rated current for easy identification
• 【HIGH QUALITY MATERIAL】 The auto fuse is crafted from premium zinc alloy terminals, offering corrosion resistance and enhanced conductivity. It quickly and accurately fuses the current, protecting your vehicle and electrical equipment from short circuits and overloads
• 【EASY TO IDENTIFY】 Each blade fuse is color-coded and clearly marked with its amperage, making it easy to identify. The transparent housing allows for easy inspection
• 【WIDELY USED】 Ideal for RVs, cars, trucks, motorcycles, campers, SUVs, boats, and other general-purpose DC applications. The storage box is designed for easy storage, and the fuse box features a locking mechanism to secure the fuses

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Bestseller No. 5

JOREST 360Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro Fuse + 60 Micro2 – for RV/Truck/Motorcycle(2A 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A)

• [Meet all your needed size]-- The fuse kit includes micro size 50pcs,60pcs micro2 size, mini size 160pcs and standard size 90pcs. Three styles of auto fuses have 11 current specifications (2A /3A / 5A/ 7.5A/ 10A/ 15A/ 20A/ 25A / 30A/ 35A/40A), equipped with a fuse puller.
• [Reasonable quantity matching]-- We increase the number of fuses with commonly used current specifications of 10A/ 15A/ 20A/ 25A, and reduced other kinds of fuses, the fuse assortment can serve as a backup fuse box for cars.
• [High quality and wide application]-- The fuse is made of environmentally friendly plastic and zinc alloy. The blade fuses are suitable for cars ,RV, truck, motorcycles, boats,SUV, ATV, UTV, Camper RV, Motorcycles, etc
• [Easy to identify]-- The car fuses of each current specification are distinguished by different colors, and the current specification number is marked on the top of each automotive fuses, which is easy to identify.
• [Installation Instructions]--Car fuses assortment kit contains fuse installation instructions to help you replace and install the fuse correctly.

$20.99

Buy on Amazon Price incl. tax, excl. shipping

Last update on 2026-05-27 / Affiliate links / Images from Amazon Product Advertising API

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