Manufacturer Communications
Vehicles / Gmc / Sierra 1500 / 2020
| Bulletin Number | Vehicle Make | Vehicle Model | Model Year | Summary |
|---|---|---|---|---|
| 20NA175 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on driver side o |
| N202316160 | GMC | SIERRA 1500 | 2020 | Service Update - Certain 2020 model year Chevrolet Silverado 1500/2500 and GMC Sierra 1500/2500 vehicles may have a condition where the driver side fr |
| PIT5792 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates a condition where the trailering app cannot be opened and provides a process for clearing the cache and pers |
| PIE0576A | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| PIE0578C | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| N202316160 | GMC | SIERRA 1500 | 2020 | Service Update - Certain 2020 model year Chevrolet Silverado 1500/2500 and GMC Sierra 1500/2500 vehicles may have a condition where the driver side fr |
| PIT5713A | GMC | SIERRA 1500 | 2020 | |
| PIP5771 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer technician to replace the valve body on the 8L90 transmission setting DTC P0796 if no debris i |
| PIP5762 | GMC | SIERRA 1500 | 2020 | |
| 20NA198 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load |
| PIT5639B | GMC | SIERRA 1500 | 2020 | |
| PIE0572A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0556A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0578C | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| PIT5713A | GMC | SIERRA 1500 | 2020 | |
| N202316160 | GMC | SIERRA 1500 | 2020 | Service Update - Certain 2020 model year Chevrolet Silverado 1500/2500 and GMC Sierra 1500/2500 vehicles may have a condition where the driver side fr |
| PIP5771 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer technician to replace the valve body on the 8L90 transmission setting DTC P0796 if no debris i |
| 20NA198 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load |
| 20NA198 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load |
| PIP5762 | GMC | SIERRA 1500 | 2020 | |
| PIE0607 | GMC | SIERRA 1500 | 2020 | This engineering information (EI is requesting information from technicians to perform the check list provided and contact the engineer listed in rega |
| 030846004X | GMC | SIERRA 1500 | 2020 | |
| PIE0607A | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| 18NA383 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sli |
| 21NA018 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of a pop noise heard coming from the rear roof of cab area.<br /> |
| N202316160 | GMC | SIERRA 1500 | 2020 | Service Update - Certain 2020 model year Chevrolet Silverado 1500/2500 and GMC Sierra 1500/2500 vehicles may have a condition where the driver side fr |
| PIT5737B | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an XM service concern of no audio at startup until a channel change and directs to contact XM for direct sup |
| PIP5175D | GMC | SIERRA 1500 | 2020 | This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudde |
| PIT5747 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to dealership how to test properly trailer light option on the truck and also provide additional information |
| PIE0572 | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| PIE0568C | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| 20NA110 | GMC | SIERRA 1500 | 2020 | This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.<br /> |
| PIT5742A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the engine wiring harness shorting on the ecm mounting bracket and provides repair instruction |
| PIT5749 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the rear door lock rod sticking in the door panel bezel and provides direction on repairing th |
| 20NA100 | GMC | SIERRA 1500 | 2020 | This informational bulletin provides information for dealers/technicians on Engine Control Module Calibration for T1 L3B Engine with DTC P26BB Set.<br |
| 20NA059 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of the pickup box endgate will not fully close by itself.<br /> |
| 20NA012 | GMC | SIERRA 1500 | 2020 | This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.<br /> |
| 19NA228 | GMC | SIERRA 1500 | 2020 | This technical provides a procedure to locate, disconnect and re-connect the TCM electrical connector if found the cause of the customers concerns.<br |
| PIT5751A | GMC | SIERRA 1500 | 2020 | |
| 16NA380 | GMC | SIERRA 1500 | 2020 | 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.< |
| PIP5653G | GMC | SIERRA 1500 | 2020 | |
| 20NA087 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Blank Radio Display or No Audio.<br /> |
| 20NA082 | GMC | SIERRA 1500 | 2020 | This informational bulletin explains why more DEF is being used in diesel engines due to new emission standards.<br /> |
| 20NA073 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Loss of Brake Assist, Various Messages Displayed in DIC, Brake Pe |
| 20NA048 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of hearing a rattle noise from driver or passenger seat belt.<br /> |
| 20NA012 | GMC | SIERRA 1500 | 2020 | This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.<br /> |
| 19NA076 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Blue Screen and Service Rear Vision System Message on Radio Displ |
| 18NA383 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sli |
| 20NA073 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Loss of Brake Assist, Various Messages Displayed in Driver Inform |
| PIT5750 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the battery goes dead and provides diagnostics tips on inspecting the LIN bus.<br /> |
| PIP5504E | GMC | SIERRA 1500 | 2020 | |
| PIT5689B | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the |
| 20NA155 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Message at Start Up or Shortly after Start Up |
| PIT5674A | GMC | SIERRA 1500 | 2020 | |
| PIP5737 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates additional diagnostic tips when diagnosing engine oil leaks on these vehicles.<br /> |
| PIT5752 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates multiple vehicle issues caused by an aftermarket device and it gives dealership information where to inspect |
| PIT5751 | GMC | SIERRA 1500 | 2020 | |
| PIT5752 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates multiple vehicle issues caused by an aftermarket device and it gives dealership information where to inspect |
| PIT5737B | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an XM service concern of no audio at startup until a channel change and directs to contact XM for direct sup |
| 20NA059 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of the pickup box endgate will not fully close by itself.<br /> |
| 20NA019 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides a procedure to replace the transmission shifter control if found the cause of the condition.<br /> |
| 20NA012 | GMC | SIERRA 1500 | 2020 | This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.<br /> |
| PIP5669A | GMC | SIERRA 1500 | 2020 | This preliminary information communicates the end of the part restriction for the diesel engine fuel system components<br /> |
| PIP5667E | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components<br /> |
| PIP5653J | GMC | SIERRA 1500 | 2020 | |
| PIT5767 | GMC | SIERRA 1500 | 2020 | |
| PIP5498M | GMC | SIERRA 1500 | 2020 | |
| PIT5751B | GMC | SIERRA 1500 | 2020 | |
| 20NA076 | GMC | SIERRA 1500 | 2020 | This informational bulletin advises the technician on where to located the fuel injector identification number.<br /> |
| PIT5666A | GMC | SIERRA 1500 | 2020 | |
| PIP5653H | GMC | SIERRA 1500 | 2020 | |
| PIP5667D | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components<br /> |
| PIT5735C | GMC | SIERRA 1500 | 2020 | |
| 20NA073 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Loss of Brake Assist, Various Messages Displayed in DIC, Brake Pe |
| 20NA073 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Loss of Brake Assist, Various Messages Displayed in DIC, Brake Pe |
| 20NA129 | GMC | SIERRA 1500 | 2020 | This informational bulletin provides information for dealers/technicians on Rear View Camera Display Bright At Night.<br /> |
| 18NA383 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sli |
| 19NA269 | GMC | SIERRA 1500 | 2020 | This Technical bulletin provides a service procedure for dealers/technicians on installation of Radio Software Version U148 Over-the-Air Update.<br /> |
| 20NA167 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides a procedure to program the ECM if found the cause of the customers concerns.<br /> |
| 20NA067 | GMC | SIERRA 1500 | 2020 | This informational bulletin provides information for dealers/technicians on Accessory Rear Seat Infotainment (RSI) Shuts Off, Coinciding with Closing |
| 20NA066 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides a procedure to program the glow plug control module if found the cause of the customers concerns.<br /> |
| PIP5653F | GMC | SIERRA 1500 | 2020 | |
| PIP5728 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer an issue where a module configuration function is missing from GDS2 scan tool. Dealer is instr |
| PIP5727 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates diagnostic tips on finding root cause of a hoot noise. If the technician confirms the hoot noise is only pre |
| PIP5700C | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmi |
| PIT5713A | GMC | SIERRA 1500 | 2020 | |
| PIP5504D | GMC | SIERRA 1500 | 2020 | |
| 20NA194 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Hard Tri-Fold tonneau water leaks at the front corners of the pic |
| 20NA183 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of seeing that the Summit White paint on front impact bar appears of |
| HT-03.03.2020 | GMC | SIERRA 1500 | 2020 | Hypertech Inline Speedometer Calibrator Module Installation Instructions<br /> |
| PIP5653E | GMC | SIERRA 1500 | 2020 | |
| PIE0567A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) ends the needs for information from the field regarding SD Code messages displayed on the Radio Screen and/or Instru |
| PIT5677C | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers ma |
| PIP5675B | GMC | SIERRA 1500 | 2020 | |
| PIT5756 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the underhood electrical center bolts being loose which can cause any of the following symptom |
| PIP5751 | GMC | SIERRA 1500 | 2020 | |
| PIP5737A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates additional diagnostic tips when diagnosing engine oil leaks on these vehicles.<br /> |
| N192266751 | GMC | SIERRA 1500 | 2020 | N192266751 - Service Update (9 VINs moved from N192266750 due to different procedure). On certain vehicles that are equipped with a 6.6L diesel engine |
| PIP5670A | GMC | SIERRA 1500 | 2020 | This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathe |
| PIP5668A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer technician the coolant control valve is on restriction.<br /> |
| PIE0563 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0555A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from the field on vehicles experiencing reduced engine power. GM Engineering needs to gath |
| 20NA095 | GMC | SIERRA 1500 | 2020 | This informational bulletin is advising dealers to replace the grilles due to rust.<br /> |
| PIT5744 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes |
| N192279350 | GMC | SIERRA 1500 | 2020 | N192279350 - Service Update Bulletin. On certain vehicles, dealer installed accessory LED fog lamps were offered and sold to customers, but there was |
| PIP5728A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer an issue where a module configuration function is missing from GDS2 scan tool. Dealer is instr |
| PIT5735B | GMC | SIERRA 1500 | 2020 | |
| PIP5637E | GMC | SIERRA 1500 | 2020 | |
| PIT5735 | GMC | SIERRA 1500 | 2020 | |
| PIP5670D | GMC | SIERRA 1500 | 2020 | This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathe |
| PIP5700B | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmi |
| PIE0568B | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0568A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0568 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the checklist provided and contact the engineer listed in rega |
| PIE0567 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0566 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0563A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0578B | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| 20NA175 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on driver side o |
| PIE0566A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0563B | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0562A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) revision ends the need for information from the field regarding Check Trailer Message on Drivers Information Center |
| PIT5743 | GMC | SIERRA 1500 | 2020 | |
| PIT5742A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the engine wiring harness shorting on the ecm mounting bracket and provides repair instruction |
| 18NA361 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed |
| N192287840 | GMC | SIERRA 1500 | 2020 | Service Update - Certain vehicles equipped with a 2.7L turbo engine (RPO L3B), may have a condition where the engine wiring harness may have been wrap |
| N202300791 | GMC | SIERRA 1500 | 2020 | Service Update - In some vehicles, equipped with diesel engines, the Diesel Exhaust Fluid (DEF) system may not immediately reactivate, as it should, a |
| N192272400 | GMC | SIERRA 1500 | 2020 | Customer Satisfaction Program - Certain 2019-2020 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with an 8-Speed Automatic Transmiss |
| N202299520 | GMC | SIERRA 1500 | 2020 | Customer Service Program - Certain vehicles may not have the backup alarm which should have been included the dealer kit. Dealers are to provide the m |
| PIE0578A | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| PIE0576 | GMC | SIERRA 1500 | 2020 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed |
| PIE0562 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the checklist provided and contact the engineer listed in rega |
| PIP5647A | GMC | SIERRA 1500 | 2020 | |
| PIP5724 | GMC | SIERRA 1500 | 2020 | |
| PIP5670E | GMC | SIERRA 1500 | 2020 | This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathe |
| PIP5667C | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components<br /> |
| PIT5742 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates an issue with the engine wiring harness shorting on the ecm mounting bracket and provides repair instruction |
| PIT5735A | GMC | SIERRA 1500 | 2020 | |
| PIE0556 | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in reg |
| PIE0546A | GMC | SIERRA 1500 | 2020 | This engineering information (EI) is requesting information from the field on conditions of Service Engine Soon (SES) Lamp Illuminated, DTCs B2B0D and |
| PIE0538B | GMC | SIERRA 1500 | 2020 | This engineering information (EI) ends the need for information from the field regarding 8 speed transmission shift quality.<br /> |
| 20NA141 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of the Tri-Fold Tonneau paint finish fading or discolored.<br /> |
| PIP5670E | GMC | SIERRA 1500 | 2020 | This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathe |
| 070842006O | GMC | SIERRA 1500 | 2020 | This informational bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced |
| 20NA021 | GMC | SIERRA 1500 | 2020 | This technical bulletin provides repair information to correct a customer concern of Intermittent "Service Steering Column Lock" message displayed wit |
| PIP5690 | GMC | SIERRA 1500 | 2020 | |
| PIP5689 | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates to the technician to reprogram the engine control module<br /> |
| PIT5689A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the |
| PIP5667A | GMC | SIERRA 1500 | 2020 | This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components<br /> |
| PIT5721 | GMC | SIERRA 1500 | 2020 |
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