Technical Service Bulletins (TSB)

CADILLAC — CT4, CT5 (2020–2022) — 38 vehicle combinations

110000 ELECTRICAL SYSTEM

This service bulletin provides repair information to correct a customer concern of Child Safety Lock Update failure.

CADILLAC — ACADIA, BLAZER, XT5, XT6 (2019–2023) — 19 vehicle combinations

100000 POWER TRAIN

This Preliminary information communicates that a vehicle may come into the dealer with various concerns which may include a service engine light or various warning messages on the DIC. The technician is instructed to inspect a wiring harnes

CADILLAC — ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, YUKON XL (2022–2023) — 9 vehicle combinations

210000 TRAILER HITCHES

This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC's a C159C sym49 maybe set for the Trailer Brake Control Switc

CADILLAC — ACADIA, EQUINOX, MALIBU, TERRAIN, XT4, XT5, XT6 (2022) — 7 vehicle combinations

220000 SEATS

Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the front heated/ventilated seats, front heated seats, or rear heated seats are not functional on certain 2022 model year vehicles listed above, built beginnin

CADILLAC — LYRIQ (2023) — 2 vehicle combinations

353500 EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)

This Preliminary information communicates an engineering investigation for incorrect location when using GPS navigation.

CADILLAC — CT5 (2022–2023) — 4 vehicle combinations

030000 SERVICE BRAKES, HYDRAULIC

This Preliminary information communicates that the appearance of cracks on carbon ceramic rotors is normal and does not impact the performance or durability of the brake system.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2022) — 9 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This engineering information (EI) ends the need for further information from the field in regards to the investigation to help GM engineering to better understand the conditions that causes mechanical seal loss of the NOx sensors.

CADILLAC — ESCALADE, ESCALADE ESV, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2021–2023) — 40 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This engineering information (EI) closure ends the need for further information from the field in regards on the rear washer hose being disconnected.

CADILLAC — ATS, ATS-V, AVALANCHE, AVALANCHE 1500, AVALANCHE 2500, CAMARO, CANYON, CAPRICE POLICE PURSUIT, COLORADO, CORVETTE, CTS, CTS-V, ESCALADE, ESCALADE ESV, ESCALADE EXT, ESCALADE EXT 1500, ESCALADE HYBRID, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, H2, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SRX, SS, STS, SUBURBAN, SUBURBAN 1500, SUBURBAN 2500, TAHOE, TAHOE HYBRID, TAHOE POLICE PURSUIT, XLR, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON HYBRID, YUKON XL, YUKON XL 1500, YUKON XL 2500 (2006–2023) — 359 vehicle combinations

100000 POWER TRAIN

This informational bulletin explains how the trans slip or flare can be a normal condition.

CADILLAC — CT4, CT5, ESCALADE, ESCALADE ESV (2021–2022) — 14 vehicle combinations

185000 VEHICLE SPEED CONTROL:CRUISE CONTROL

This service bulletin provides repair information to correct a customer concern of Super Cruise Enhancement: Trailering and Active Lane Change failed installation.

CADILLAC — ESCALADE ESV, SUBURBAN, TAHOE, YUKON, YUKON XL (2021–2023) — 48 vehicle combinations

100000 POWER TRAIN

This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Li

CADILLAC — ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, YUKON XL (2022) — 18 vehicle combinations

049000 SERVICE BRAKES, AIR:SWITCH

This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC. When checking for DTC's a C159C sym49 maybe set for the Trailer Brake Control Switc

CADILLAC — C3500, CANYON, COLORADO, CRUZE, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, G3500, G4500, LOW CAB 3500, LOW CAB 4500, LOW CAB 5500, LOW CAB FORWARD 6500, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, YUKON, YUKON XL (2014–2023) — 350 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides information on availability of Diesel Fuel additives.

CADILLAC — ESCALADE, ESCALADE ESV, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2021–2022) — 60 vehicle combinations

110000 ELECTRICAL SYSTEM

This technical bulletin provides repair information to correct a customer concern of Rear Hatch Liftgate Window Glass Inoperative.

CADILLAC — ESCALADE ESV (2022)

092300 FUEL SYSTEM, OTHER:FUEL FILTER

This Preliminary information communicates an issue where the fuel filter life reset function is missing from the DIC. Engineering is working on a fix.

CADILLAC — ESCALADE ESV, HUMMER EV, SUBURBAN, TAHOE, YUKON XL (2022) — 5 vehicle combinations

120000 EXTERIOR LIGHTING

This Preliminary information communicates some customer may comment the headlights are on during daylight conditions with DTC B108E set. Dealers are to reprogram the BCM with updated calibrations to correct this issue.

CADILLAC — ACADIA, EQUINOX, MALIBU, TERRAIN, XT4, XT5, XT6 (2022) — 11 vehicle combinations

220000 SEATS

Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the front heated/ventilated seats, front heated seats, or rear heated seats are not functional on certain 2022 model year vehicles listed above, built beginnin

CADILLAC — ESCALADE ESV, HUMMER EV, SUBURBAN, TAHOE, YUKON XL (2022) — 10 vehicle combinations

115000 ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

This Preliminary information communicates some customer may comment the headlights are on during daylight conditions with DTC B108E set. Dealers are to reprogram the BCM with updated calibrations to correct this issue.

CADILLAC — LYRIQ (2023)

162322 STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR

This Preliminary information communicates the operation of the outside door handles.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2022) — 9 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This engineering information (EI) closure ends the need for further information from the field in regards to a Malfunction Indicator Lamp (MIL) illuminated on driver information center (DIC) with DTCs P26BB and/or P2B60 Set.

CADILLAC — LYRIQ (2023) — 2 vehicle combinations

200000 WHEELS

This Preliminary information communicates that paint may be missing from the inside flange of the wheels.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2022) — 13 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This informational bulletin provides a procedure to install an isolator over the valve cover if found missing and corrects the customers concern.

CADILLAC — CANYON, COLORADO, CRUZE, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, EXPRESS 1500, EXPRESS 2500, EXPRESS 3500, EXPRESS 4500, EXPRESS CUTAWAY, EXPRESS CUTAWAY VAN, G VAN BUS, G4500, SAVANA, SAVANA 1500, SAVANA 2500, SAVANA 3500, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, YUKON, YUKON XL (2010–2024) — 606 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in

CADILLAC — CT5, ESCALADE (2021–2023) — 8 vehicle combinations

284100 BACK OVER PREVENTION:DISPLAY FUNCTION

This Preliminary information communicates to dealer that Engineering is actively working on a solution to the blue hourglass and no grid lines while in reverse concern.

CADILLAC — CT5 (2020–2022) — 3 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This service bulletin provides a service procedure to correct a customer concern of a Rattle Noise/Vibration from Under Vehicle.