Chevrolet Tahoe Service Bulletins (2010)

1,601 manufacturer communications on file.

• March 5, 2018•Document ID: 10137171

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES

  Mfr Comm. #:

  PIT4376J

  Date Added:

  May 21, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication advises the technician about key and theft information for Fleet Vehicles equipped with RPO 6E2 or 6E8 and converting to fleet mode. Technician will need to ensure fleet vehicles with RPO 6E2 or 6E8 should be checked to verify that the Theft Deterrent Module is in fleet mode prior to attempting to add keys.

  Associated Products (77)

  2018 Chevrolet Express2018 GMC Savana2017 Chevrolet Express2017 GMC Savana2016 Chevrolet Express2016 GMC Savana2015 Chevrolet Express2015 GMC Savana2014 Cadillac Escalade2014 Chevrolet Express2014 Chevrolet Silverado2014 Chevrolet Suburban2014 Chevrolet Tahoe2014 GMC Savana2014 GMC Sierra2014 GMC Yukon2013 Cadillac Escalade2013 Chevrolet Avalanche2013 Chevrolet Express2013 Chevrolet Silverado+ 57 more
  Associated Documents

  • DownloadMC-10137171-0001.pdf↗
• February 28, 2018•Document ID: 10137375

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  17NA215

  Date Added:

  May 21, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to properly reprogram an onstar module to correct a condition of Red LED, No WiFi Operation, and/or Limited OnStar® Module Functionality After OnStar Module Replacement for Another Condition.

  Associated Products (404)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 384 more
  Associated Documents

  • DownloadMC-10137375-0001.pdf↗
• February 27, 2018•Document ID: 10137343

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  090604015C

  Date Added:

  May 21, 2018

  Manufacturer:

  BUICK

  Summary

  This informational bulletin provides a revision for 09-06-04-015B (Vehicles Sitting Outside on Dealer Lots for Extended Periods with Hard Start/No Start Condition) to add the 2015-2018 model years.

  Associated Products (378)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 358 more
  Associated Documents

  • DownloadMC-10137343-0001.pdf↗
• February 15, 2018•Document ID: 10137344

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:SOFTWARE; ENGINE

  Mfr Comm. #:

  090604026N

  Date Added:

  May 21, 2018

  Manufacturer:

  CADILLAC

  Summary

  This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada

  Associated Products (333)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Equinox2018 Chevrolet Express2018 Chevrolet Impala2018 Chevrolet Malibu+ 313 more
  Associated Documents

  • DownloadMC-10137344-0001.pdf↗
• February 9, 2018•Document ID: 10129878

  Service Bulletin/Repair Instructions
  SUSPENSION:REAR:SHOCK ABSORBER; SUSPENSION:FRONT:SHOCK ABSORBER

  Mfr Comm. #:

  PIT5049D

  Date Added:

  March 12, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician on the steps to help diagnose and repair vehicles with a rattle, squeak, clunk, thump, or bump. If published Service Information diagnostics do not lead to a repair for the concern. Technician should inspect the opposite side shock/strut for the cause of the concern.

  Associated Products (79)

  2018 Cadillac Escalade2018 Chevrolet Silverado2018 Chevrolet Suburban2018 Chevrolet Tahoe2018 GMC Sierra2018 GMC Yukon2017 Cadillac Escalade2017 Chevrolet Silverado2017 Chevrolet Suburban2017 Chevrolet Tahoe2017 GMC Sierra2017 GMC Yukon2016 Cadillac Escalade2016 Chevrolet Silverado2016 Chevrolet Suburban2016 Chevrolet Tahoe2016 GMC Sierra2016 GMC Yukon2015 Cadillac Escalade2015 Chevrolet Silverado+ 59 more
  Associated Documents

  • DownloadMC-10129878-0001.pdf↗
• February 1, 2018•Document ID: 10137341

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

  Mfr Comm. #:

  030603004W

  Date Added:

  May 21, 2018

  Manufacturer:

  PONTIAC

  Summary

  This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.

  Associated Products (556)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 536 more
  Associated Documents

  • DownloadMC-10137341-0001.pdf↗
• January 31, 2018•Document ID: 10139279

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

  Mfr Comm. #:

  060601010D

  Date Added:

  June 4, 2018

  Manufacturer:

  PONTIAC

  Summary

  This informational bulletin explains how the catalytic converters may need an inspection, cleaning or replacement if debris have entered the exhaust system.

  Associated Products (592)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 572 more
  Associated Documents

  • DownloadMC-10139279-0001.pdf↗
• January 29, 2018•Document ID: 10139282

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:12V/24V/48V BATTERY

  Mfr Comm. #:

  150603001D

  Date Added:

  June 4, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.

  Associated Products (477)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 457 more
  Associated Documents

  • DownloadMC-10139282-0001.pdf↗
• January 25, 2018•Document ID: 10129097

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5226B

  Date Added:

  February 21, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.

  Associated Products (798)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 778 more
  Associated Documents

  • DownloadMC-10129097-0001.pdf↗
• January 24, 2018•Document ID: 10129093

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  PIP4138Q

  Date Added:

  February 21, 2018

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

  Associated Products (241)

  2018 Cadillac CTS2018 Cadillac Escalade2018 Chevrolet Camaro2018 Chevrolet Corvette2018 Chevrolet Express2018 Chevrolet Silverado2018 Chevrolet Suburban2018 Chevrolet Tahoe2018 GMC Savana2018 GMC Sierra2017 Cadillac CTS2017 Cadillac Escalade2017 Chevrolet Camaro2017 Chevrolet Caprice2017 Chevrolet Corvette2017 Chevrolet Express2017 Chevrolet Silverado2017 Chevrolet Suburban2017 Chevrolet Tahoe2017 GMC Savana+ 221 more
  Associated Documents

  • DownloadMC-10129093-0001.pdf↗
• January 23, 2018•Document ID: 10129089

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  PIT3271H

  Date Added:

  February 21, 2018

  Manufacturer:

  PONTIAC

  Summary

  This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

  Associated Products (685)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 665 more
  Associated Documents

  • DownloadMC-10129089-0001.pdf↗
• January 18, 2018•Document ID: 10129073

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5540A

  Date Added:

  February 21, 2018

  Manufacturer:

  GMC

  Summary

  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. That any of the listed DTC's may set with or without poor engine performance.

  Associated Products (798)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 778 more
  Associated Documents

  • DownloadMC-10129073-0001.pdf↗
• January 17, 2018•Document ID: 10139280

  Service Bulletin/Repair Instructions
  VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

  Mfr Comm. #:

  100864002D

  Date Added:

  June 4, 2018

  Manufacturer:

  GMC

  Summary

  This warranty bulletin explains how to determine if an outside mirrior was damaged by the customer and what is considered warranty and non-warranty.

  Associated Products (571)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 551 more
  Associated Documents

  • DownloadMC-10139280-0001.pdf↗
• January 16, 2018•Document ID: 10129067

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT

  Mfr Comm. #:

  PIP5168F

  Date Added:

  February 21, 2018

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (94)

  2018 Cadillac Escalade2018 Chevrolet Camaro2018 Chevrolet Corvette2018 Chevrolet Express2018 Chevrolet Silverado2018 Chevrolet Suburban2018 Chevrolet Tahoe2018 GMC Savana2018 GMC Sierra2018 GMC Yukon2017 Cadillac Escalade2017 Chevrolet Camaro2017 Chevrolet Corvette2017 Chevrolet Express2017 Chevrolet Silverado2017 Chevrolet Suburban2017 Chevrolet Tahoe2017 GMC Savana2017 GMC Sierra2017 GMC Yukon+ 74 more
  Associated Documents

  • DownloadMC-10129067-0001.pdf↗
• January 12, 2018•Document ID: 10139284

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

  Mfr Comm. #:

  PI0653E

  Date Added:

  June 4, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center.

  Associated Products (401)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 381 more
  Associated Documents

  • DownloadMC-10139284-0001.pdf↗
• January 9, 2018•Document ID: 10129057

  Service Bulletin/Repair Instructions
  COMMUNICATION; FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

  Mfr Comm. #:

  PIP3343F

  Date Added:

  February 21, 2018

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (163)

  2018 Chevrolet Express2018 Chevrolet Silverado2018 GMC Savana2018 GMC Sierra2017 Chevrolet Express2017 Chevrolet Silverado2017 GMC Savana2017 GMC Sierra2016 Chevrolet Express2016 Chevrolet Silverado2016 GMC Savana2016 GMC Sierra2015 Chevrolet Express2015 Chevrolet Silverado2015 GMC Savana2015 GMC Sierra2014 Cadillac Escalade2014 Chevrolet Express2014 Chevrolet Silverado2014 Chevrolet Suburban+ 143 more
  Associated Documents

  • DownloadMC-10129057-0001.pdf↗
• January 8, 2018•Document ID: 10139278

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:DOOR; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); VISIBILITY:WINDSHIELD; ELECTRONIC STABILITY CONTROL (ESC)

  Mfr Comm. #:

  060089026N

  Date Added:

  June 4, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.

  Associated Products (472)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 452 more
  Associated Documents

  • DownloadMC-10139278-0001.pdf↗
• January 4, 2018•Document ID: 10129051

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PIP5540

  Date Added:

  February 21, 2018

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (798)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express+ 778 more
  Associated Documents

  • DownloadMC-10129051-0001.pdf↗
• December 21, 2017•Document ID: 10139209

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL

  Mfr Comm. #:

  050604022O

  Date Added:

  June 4, 2018

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles.

  Associated Products (427)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Buick Regal2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Express2018 Chevrolet Impala+ 407 more
  Associated Documents

  • DownloadMC-10139209-0001.pdf↗
• December 19, 2017•Document ID: 10126982

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIC5650D

  Date Added:

  January 16, 2018

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

  Associated Products (293)

  2018 Buick Cascada2018 Buick Enclave2018 Buick Encore2018 Buick Envision2018 Buick LaCrosse2018 Cadillac ATS2018 Cadillac CT62018 Cadillac CTS2018 Cadillac Escalade ESV2018 Cadillac XT52018 Cadillac XTS2018 Chevrolet Bolt EV2018 Chevrolet Camaro2018 Chevrolet Colorado2018 Chevrolet Corvette2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Malibu2018 Chevrolet Silverado2018 Chevrolet Sonic+ 273 more
  Associated Documents

  • DownloadMC-10126982-0001.pdf↗