2020 Chevrolet Express Technical Service Bulletins

716 technical service bulletins (TSBs) are on record for the 2020 Chevrolet Express. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10166642Sep 20, 2019Engine cooling. This technical bulletin provides a procedure to replace the turbocharger for vehicles with a condition of Turbocharger Whine Noise due to the blades on the turbo being bent.
• 10166643Sep 19, 2019Engine cooling. This informational bulletin explains how the SOOT readings went from grams to percentage. 2-1-18 Change Subject to reflect the test procedure. 5-1-18 Updated the Information section.
• 10166639Sep 19, 2019Engine cooling. This technical bulletin provides a procedure to Tighten the Charge Air Cooler Duct Clamp to correct a condition of an oil leak originating from either the inlet or outlet duct of the turbocharger due to the charge air cooler pipe clamp not being tightened properly.
• 10166637Sep 19, 2019Electrical system. This technical bulletin provides a procedure on how to properly identify if there is any aftermarket calibrations loaded on the ECM or and detection of a power up hardware installed.
• 10166641Sep 18, 2019Engine cooling. This informational bulletin advises the technician to test the induction system for leaks for any of the codes listed.
• 10166638Sep 18, 2019Equipment. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10165080Aug 26, 2019Engine cooling. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10165127Aug 23, 2019Electrical system. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).
• 10165087Aug 23, 2019Equipment. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 10165124Aug 21, 2019Engine cooling. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 10165126Aug 19, 2019Equipment. This bulleting provides Wiring, Terminal and Connector Repair Information including how to determine the Service Part Number in eSI and how to locate the part(s) in the EPC.
• 10165121Aug 15, 2019Engine cooling. This informational bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
• 10165122Aug 13, 2019Engine cooling. This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10165079Aug 5, 2019Steering. This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
• 10163900Jul 26, 2019Equipment. This informational bulletin provides process information for the (GWM) and (WPC) parts return program.
• 10163193Jun 25, 2019Equipment. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.

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