16NA383
Service Bulletin Details
Public Details for: 16NA383
This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, crank no start, extended crank or misfire, mil with dtcs, and explains how top tier fuels
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Bulletin No.: Service Bulletin Date: 16-NA-383 January, 2020 INFORMATION Subject: Information on Rough Idle, Crank No Start, Extended Crank or Misfire Due to Excessive Carbon on Top of the Valves or Sticking Valves, Malfunction Indicator Light (MIL) Illuminated - DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set This bulletin replaces PIP5029H. Please discard PIP5029H. Brand: Model: Buick GM Passenger Cars and Trucks (including LCF MD) Cadillac Chevrolet GMC Model Year: VIN: from to 2000 2020 from to Engine: Transmission: Gasoline Engines Only Involved Region or Country United States, Canada, Mexico Condition Some customers may comment on the following conditions: • Rough idle • Crank no start • Extended crank • Engine misfire The technician may find one or more of the following DTCs set: • P0300 • P0301 • P0302 • P0303 • P0304 • P0305 • P0306 • P0307 • P0308 SI diagnosis may or may not isolate the cause of the misfire depending on whether the intake/exhaust valves are sticking at the time of the diagnosis. Cause This condition may be caused by major carbon build-up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel as shown below, so the misfires should not have appeared until accumulating at least 8,000 km (5,000 mi) or more. Note: Fuel oxidation and volatility concerns can often cause these issues as well, however they cannot generally be checked in service. Trying a different, high quality Top Tier fuel and regular oil changes is sometimes the best diagnostic. Additional gasoline Copyright 2020 General Motors LLC. All Rights Reserved. retailers are added to the TOP TIER list when their gasoline meet the TOP TIER Detergent Gasoline Standards. For the most up to date list of fuel marketers that offer TOP TIER Detergent Gasoline, refer to this website: www.toptiergas.com. Page 2 January, 2020 Bulletin No.: 16-NA-383 Information Important: A new reformulated Top Engine Cleaner has been released by CCA Parts and is recommended and approved to use in the GM vehicle line. The graphics below may show typical carbon build-up during engine disassembly and inspection of the cylinder heads: 2836273 2857954 2836275 2857955 Bulletin No.: 16-NA-383 January, 2020 2857957 When the engine is cold, the compression on multiple cylinders may be at 0 kPa (0 psi). The engine also may pop through the intake or exhaust while cranking and the spark plugs may be fuel-fouled when inspected. Some engines may also experience valve damage or cam followers that are out of position as a result of this. If this concern is encountered, perform SI diagnosis. If the SI diagnosis leads to a compression loss due to a valve sealing concern and/or eliminates everything else external to the engine, the following information may help: • If there is no sign of valve damage or cam followers that are out of place, perform the following procedure to free up sticking valves and to remove carbon from the valves and pistons. • If valve damage is present or if there are cam followers that are out of place, perform engine mechanical repairs as necessary to correct the concern and then perform the procedure below to prevent the concern from returning. Page 3 2857956 Page 4 • • January, 2020 Bulletin No.: 16-NA-383 Perform an upper engine and valve cleaning procedure. Below are examples of valves that have gone through a Top Engine cleaning procedure. Before Cleanup After Cleanup 3979074 3979169 4791643 4791651 Bulletin No.: 16-NA-383 January, 2020 Before Cleanup Page 5 After Cleanup 4791647 4791652 4791649 4791655 Video Training (U.S. Dealers) There is also a related training video on this subject that was included in the January 2013 Emerging Issues Video that technicians should consider viewing. Because the training video does not mention this, please note that it is acceptable to use equivalent tools and the engine oil and filter should also be replaced to complete the repairs. The training video is available at the GM Center of Learning Website and can be viewed by following this path: ⇒ Go to www.centerlearning.com ⇒ Enter Training ID ⇒ Click Resources ⇒ Click Service Know How / Tech Assist ⇒ Click Emerging Issues ⇒ Click 10213.01D - January 2013 Emerging Issues (VOD) ⇒ Click the Topics Tab on Upper Right ⇒ Click Link for PIP5029: Decarbonizing Valves in SIDI Engines Page 6 January, 2020 Bulletin No.: 16-NA-383 Service Procedure Warning: Please follow all safety instructions noted on the bottle and service tool. Ensure safety glasses and gloves are being worn during the procedure. Fuel Injector Cleaner Kit J-35800-A Cleaner Nozzle EN-35800-20 4630850 Important: Extreme care must be taken not to hydro-lock the engine when inducing the cleaner, especially if it is induced without Fuel Injector Cleaner Kit J-35800-A or equivalent. If too much cleaner is induced at too low of an RPM, or if you force the engine to stall by inducing too much cleaner at once, the engine may hydro-lock and bend a connecting rod(s). 1. Fill Cleaner Kit J-35800-A with Top Engine Cleaner, approximately 473 ml (16 oz), and close the cap of the tool tightly. Set the air pressure to 260 kPa (40 psi) at the service tool. 2. Using GDS 2 or a Scan Tool, command engine idle to 2000 rpm to prevent the engine from stalling. Typically 2,000 rpm will be sufficient. Note: Two applications of the Top Engine Cleaner may be necessary to perform a total cleanup depending on the condition of the combustion chamber. 3. In a well-ventilated area with the engine at operating temperature, slowly/carefully induce the Top Engine Cleaner into the engine, which should take approximately 3 minutes. ⇒ For best results, it is suggested to induce the cleaner through the throttle body with Fuel Injector Cleaner Kit J-35800-A or equivalent and NEW Cleaner Nozzle EN-35800-20, which has been developed to help atomize the cleaner. 4630851 4. After the entire contents of Top Engine Cleaner has been induced, continue to run the engine for 2 minutes at idle. 5. Change the engine oil and filter, and advise the customer to only use one of the Top Tier Gasoline locations listed at http://www.toptiergas.com and/or in the latest version of Service Bulletin 05-06-04-022 to minimize future deposits. It can also be recommended to add a bottle of GM Fuel System Treatment Plus at every oil change as mentioned in the latest version of Service Bulletin 04-06-04-051. 6. Test drive the vehicle, using only light acceleration, and clear any DTCs if necessary. Important: GM does not recommend the use of any aftermarket top engine cleaning product. Some products may cause harmful effects to components or seals and may void the terms of the vehicle warranty. Use only the GM products listed below, which have been tested and approved. Bulletin No.: 16-NA-383 January, 2020 Page 7 Parts Information Description Part Number Qty 19355198 (U.S.) ACDelco Top Engine Cleaner 19355199 (Canada) 1 19368261 (Mexico) 88865595 (U.S.) Fuel System Treatment Plus - Gasoline 88865598 (Canada) 1 193689716 (Mexico) Fuel System Treatment Plus – Flex Fuel 88865596 (U.S.) 88865599 (Canada) 1 Oil Filter, Engine Refer to EPC 1 Oil, Engine Refer to EPC 5 qt Warranty Information For vehicles repaired under the Emission coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Labor Operation Description Labor Time 4080148* Decarbon Engine Using Upper Engine Cleaner 0.5 hr Add Change Engine Oil and Filter 0.3 hr *This is a unique Labor Operation for bulletin use only. Version 3 Modified May 21, 2019 – Added the 2019 Model Year, updated the Video Training section to remove Canada and updated step 6 of the Service Procedure. January 02, 2020 – Added the 2020 Model Year and part numbers for Mexico parts. 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