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Service bulletins for the 2018 Chevrolet Express

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1000 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIP5168F2018-02-21. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the valve train is rotating during inspection, disconnect the Camshaft Position sensor and check if the engine will start. If the engine starts front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the engine does not start with the Camshaft Position sensor disconnected the follow published “Engine Cranks But Does Not Run” diagnosis in Service Information. Also perform an Engine Compression Test and Cylinder Leakage Test in Service Information documents all results. If the Service Information procedures above isolate an engine mechanical concern then removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly.
PIP3343F2018-02-21. Service bulletin. COMMUNICATION; FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS. This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
PIP55402018-02-21. Service bulletin. EQUIPMENT. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components.
PIP5522B2018-01-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicatesA vehicle may have a concern of engine noise and/or a misfire. This may be caused by a broken rocker arm.Abroken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage. If a broken rocker arm is found check to see if the valve dropped into the cylinder if so the engine will need to be replaced.On occasions the valve will not drop, reinstall any valve keepers and replace all the intake rocker arms.
PIT5125C2018-01-16. Service bulletin. EXTERIOR LIGHTING:TURN SIGNAL. This Preliminary Information communication provides information to the technician about vehicles proper operation of the stop and/or turn signals. For vehicles without Regular Production Option Code V4D circuit 618 is for the left stop and turn signal and circuit 619 dark green is for the right stop and turn signal. For vehicles with Regular Production Option Code V4D circuit 618 yellow is for the left turn signal only. Circuit 619 dark green is for the right turn signal only and circuit 1320 light blue is for the stop lamps only.
PIT4844G2018-01-16. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL; STEERING. This Preliminary Information communication provides information to the technician with the installation of Cruise Control on a vehicle which did not come equipped with the option. Technician will need to contact the Techline Customer Support Center to determine if a calibration is available for the vehicle. If they are able to provide a calibration for the vehicle then order steering wheel with cruise control buttons, steering wheel sir coil, and steering column wiring harness.
PIT5354B2018-01-16. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication advises the technician how to determine if the vehicle is equipped with wireless fidelity. Technician should check the Regular Production Option Code list for (VV4).
PIC5491K2018-01-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics.
PIC5839D2018-01-16. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about vehicles that may have a clock that is slow to update while driving when the clock auto set feature enabled. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.
17-NA-2442017-12-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Information on How to Prevent Inadvertent Vehicle Starting from Key Fob or OnStar Mobile Application and where to locate the information for future use.
17-NA-2422017-12-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides to the tech the new version of SPS that will prompt warnings when trying to reprogram modules that have been already reprogrammed.
17-NA-2302017-12-22. Service bulletin. WHEELS. This informational bulletin provides information on mcgard wheel locks and if the key ever fractures that they will replace it via the website provided.
17-NA-1702017-12-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin explains the Road Force balancers and what they can do for customer concerns.
17-NA-0552017-12-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information for dealers/technicians on timely and proper removal of temporary Paint Guard Film (PGF) which may have been applied to new, unsold vehicles in dealer stock.
11-08-49-001V2017-12-22. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This technical bulletin provides information on Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.
08-08-51-003H2017-12-22. Service bulletin. STRUCTURE:BODY:BUMPERS. This informational bulletin advised the dealer to remove the protective film from the bumpers and how to clean/remove the adhesive.
04-00-89-015P2017-12-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information on required operating procedures.
PIT5202D2017-12-14. Service bulletin. ENGINE; POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that are equipped with 6L80 Regular Production Option Code (MYC), 6L90 Regular Production Option Code (MYD) or 8L90 Regular Production Option Code (M5U) Automatic Transmission, now have Powertrain Grade Braking. Powertrain grade braking assists when driving on a downhill grade to help maintain desired vehicle speed by using the engine and transmission to slow the vehicle.
PIC3100F2017-12-14. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Preliminary Information communication provides information to the technician about vehicle's odometer appears to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.
PIP5428C2017-12-14. Service bulletin. ENGINE. This Preliminary Information communication advises the technician that the ECM part numbers 55501366, 55502052 and 55485591 will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIP55262017-11-14. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the 8L45 and 8L90 park actuator rod. The dealer technician is advised to call the GM Product Quality Center for further assistance.
PIP5508A2017-11-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. This Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the T87A Transmission Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance.
PIT5353B2017-11-14. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about what XM offerings are available for vehicles. A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.
PIT5206F2017-11-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician with the steps on diagnosing and repairing vehicles that may have unwanted grade braking, reduced engine power with no Driver Information Center messages “ Brake Pedal Override Feature “, transmission busy or frequent shifting up or down, and Diagnostic Trouble Codes P057B, P057C, and/or P057D may or may not be set. Technician will use this preliminary information to find the brake pedal position data parameters in the scan tool, and also to provide some additional diagnostic help. These issues may be caused by an incorrect brake pedal position sensor input to the engine control module. Technician will verify with the scan tool if the engine control module has the correct parameters for the brake pedal position sensor. If an engine control module brake pedal position sensor relearn is performed, the truck may be temporarily repaired until the intermittent wiring issue between the engine control module and brake pedal position sensor occurs again. On 2014 and newer trucks inspect and repair any damage to X115 and X119. On the 2014 and previous trucks inspect and repair any damage to X205.
PIT5315C2017-11-14. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about the retained accessory power on vehicles with Radio Provisions Only Regular Production Option Code (UXZ). If the vehicle is equipped with radio provisions but was not built with a radio, the retained accessory power feature will not be present.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.