Technical Service Bulletins (TSB)

CADILLAC — ESCALADE ESV, SUBURBAN, TAHOE, YUKON XL (2021–2022) — 8 vehicle combinations

134000 VISIBILITY:SUN/MOON ROOF ASSEMBLY

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the

CADILLAC — LYRIQ (2024) — 2 vehicle combinations

117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

Certain vehicles may have a condition in which the instrument panel center storage compartment does not function correctly. Dealers will replace the instrument panel upper compartment.

CADILLAC — SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, TRAVERSE, XT5, XT6 (2020) — 9 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

This Preliminary information communicates a Radio software update resolution for OnStar LED Red And Wifi Hotspot Inoperative After Remote Vehicle Start concern.

CADILLAC — ATS, CTS (2013–2019) — 13 vehicle combinations

106000 POWER TRAIN:AXLE ASSEMBLY

This Preliminary information communicates a potential root cause for a rear axle seal leak.

CADILLAC — LYRIQ (2023) — 9 vehicle combinations

110000 ELECTRICAL SYSTEM

Customer Satisfaction Program - Certain vehicles may require software updates that improve the customer experience and optimize future over-the-air updates. Dealers will perform a comprehensive software update.

CADILLAC — CAMARO, CT5, ESCALADE, ESCALADE ESV, SIERRA 1500, SILVERADO 1500, TAHOE, YUKON, YUKON XL (2023) — 9 vehicle combinations

100000 POWER TRAIN

Customer Satisfaction Program: Certain vehicles may have pinion gears that have low core and surface hardness. Dealers are to replace the transmission.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL (2022–2024) — 26 vehicle combinations

138000 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.

CADILLAC — CTS (2014–2019) — 6 vehicle combinations

353000 EQUIPMENT:ELECTRICAL

This Preliminary information communicates to the technicians some additional diagnostic tips if they encounter a condition of a dead battery/parasitic drain.

CADILLAC — CANYON, COLORADO, LYRIQ (2023) — 3 vehicle combinations

251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

This Preliminary information communicates that all Canyon, Colorado and LYRIQ Radios are on ESC restriction and will need TAC approval for replacement.

CADILLAC — BLAZER EV, LYRIQ, XT4 (2023–2024) — 24 vehicle combinations

030000 SERVICE BRAKES, HYDRAULIC

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the rear automatic braking may brake unwantedly, usually when reversing out o

CADILLAC — ESCALADE, ESCALADE ESV (2022–2024) — 20 vehicle combinations

160000 STRUCTURE

This technical bulletin provides repair information to correct a customer concern of Interior Indented Door Panel.

CADILLAC — XT4 (2024) — 2 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the on the Check Engine Lamp illuminated on Driver Information Center (DIC).

CADILLAC — LYRIQ (2023–2024) — 16 vehicle combinations

117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

Customer Satisfaction Program - Certain vehicles may have a condition in which the instrument panel center storage compartment does not function correctly. Dealers will replace the instrument panel center compartment or upper compartment.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SILVERADO 1500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL, YUKON XL 1500 (2020–2024) — 42 vehicle combinations

080000 FUEL SYSTEM, DIESEL

This bulletin advises the tech that there are extra characters on the fuel injector and to ignore the last numbers when identifying flow rate.

CADILLAC — BLAZER, LYRIQ, LYRIQ EV (2023–2024) — 3 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates to the dealer that no hardware parts as needed to repair the vehicle and to follow programming procedure to repair and fix the codes that were present. The Programming of the BECM will repair the co

CADILLAC — CT4, SIERRA 1500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO EV (2022–2024) — 9 vehicle combinations

053000 PARKING BRAKE:INDICATOR LIGHT

This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.

CADILLAC — CANYON, COLORADO, CT4, SIERRA 1500, SILVERADO 1500 (2019–2024) — 19 vehicle combinations

120000 EXTERIOR LIGHTING

This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated During Cold Ambient Temperatures with DTCs P30C3 and/or P30BF P30C7 P30CB Setting.

CADILLAC — LYRIQ (2023) — 3 vehicle combinations

110000 ELECTRICAL SYSTEM

This engineering information (EI) provides special update instructions for A11 Radio.

CADILLAC — HUMMER EV, LYRIQ, SILVERADO EV (2022–2024) — 6 vehicle combinations

110000 ELECTRICAL SYSTEM

This Preliminary information communicates to technicians to perform the programming to the vehicles module to correct customer concerns.

CADILLAC — ESCALADE, ESCALADE ESV, SIERRA 1500, SIERRA 2500, SILVERADO 1500, SILVERADO 2500, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON DENALI, YUKON XL (2015–2024) — 60 vehicle combinations

355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. This is normal operation of the vehicle built with regular production code BTM and without R

CADILLAC — ESCALADE, ESCALADE ESV (2023) — 8 vehicle combinations

060000 ENGINE AND ENGINE COOLING

This bulletin advises the tech that the exhaust valve have been re-orientated, which will require the electrical connector to be extended so it can reach said valve.

CADILLAC — ESCALADE, SUBURBAN, TAHOE, YUKON, YUKON XL (2023–2024) — 9 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

This Preliminary information communicates to technicians that a calibration to correct a P138C is forthcoming and to not attempt repairs.

CADILLAC — BLAZER EV, LYRIQ (2023–2024) — 3 vehicle combinations

118000 ELECTRICAL SYSTEM:SOFTWARE

This Preliminary information communicates to the dealer of a possible issue with the vehicle is that the code was set in error and will need a reset procedure performed to verify. This PI outlines the path the dealer is to take to verify th

CADILLAC — ESCALADE, ESCALADE ESV, SUBURBAN, TAHOE, YUKON, YUKON XL (2021–2024) — 16 vehicle combinations

020000 SUSPENSION

This Preliminary information communicates a tip when diagnosing an inoperative air leveling suspension system and to repair any loss of comm DTC's with the power window motors first.

CADILLAC — ESCALADE, ESCALADE ESV, SUBURBAN, SUBURBAN 1500, TAHOE, YUKON, YUKON XL, YUKON XL 1500 (2022–2024) — 88 vehicle combinations

110000 ELECTRICAL SYSTEM

This technical bulletin offers a procedure to correct the condition of Dead Battery and / or Unwanted Liftgate Opening.