04-06-04-051E

Bulletin No.: 04-06-04-051E
Date: Nov-2016
Subject:
Maintenance Cleaning of Fuel Injectors and Information Regarding Gasoline Detergent Additive
Models:
2017 and Prior GM Passenger Cars and Trucks
Attention:
This Bulletin also applies to any of the above models that may be Export from North America vehicles.
This Bulletin has been revised to add the 2016-2017 Model Years and include information for gasoline detergent additive.
Please discard Corporate Bulletin Number 04-06-04-051D.
General Motors is aware that some companies are marketing tools, equipment and programs to support fuel injector cleaning as a preventative maintenance
procedure. General Motors does not endorse, support or acknowledge the need for fuel injector cleaning as a preventative maintenance procedure. Fuel
injector cleaning is approved only when performed as directed by a published GM driveability or DTC diagnostic service procedure.
Due to variation in fuel quality in different areas of the country, the only preventative maintenance currently endorsed by GM regarding its gasoline engine fuel
systems is the addition of GM Fuel System Treatment PLUS added to a tank of fuel at each oil change.
Regular use of a TOP TIER Detergent Gasoline as recommended in the owner’s manual will help prevent the build-up of intake valve and fuel injector deposits.
A complete list of TOP TIER fuel retailers can be found at www.toptiergas.com.
This bulletin also introduces two part numbers for General Motors global aftermarket detergent fuel additives. Part Number 88865595, for use in gasoline
vehicles, and 88865596 for Flex Fuel Vehicles (FFVs).
Why they need additive:
These fuel additives are for the prevention and removal of deposits from spark-ignited engines, particularly from the intake valves, fuel injectors, and the
combustion chamber.
How we came up with this:
General Motors Global Propulsion Systems (GM GPS) Fuels Group updated GMW17131 with a set of minimum technical requirements designed to extensively
evaluate additive chemistry, with the intent to have an effective gasoline detergent specification for all markets. The above formulations meet, or exceed, the
requirements of GMW17131 and are the products currently approved. Only approved additive chemistries can be distributed in the dealer network and used in
General Motors’ vehicles.
When to use - conditions:
These detergent fuel additives should be used when the vehicle exhibits loss of power, diminished performance, frequent stalls, or no starts, or when a noted
decrease in fuel economy is observed. Refer to your owner’s manual for more information on when the additive should be used.
How to use the additives:
Detergent fuel additives are to be used following the instructions in the Owner’s Manual.
Parts Information
Part Number
Description
U.S. 88865595
(for Canada use
88865598)
CLEANER, FUEL SYSTEM TREATMENT 12
OZ. (GASOLINE)
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U.S. 88865596
(for Canada use
88865599)
CLEANER, FUEL SYSTEM TREATMENT 12
OZ. (FLEX FUEL)
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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