Cadillac · Known Issues
2020-2025 Cadillac XT6 Problems: 26 Known Issues
2020-2025 model years · 200+ owner reports · Updated October 2026
All years · All trims · All engines
Choose the year and equipment to match the visual and written issues.
2020-2025 model years · 200+ owner reports · Updated October 2026
All years · All trims · All engines
Choose the year and equipment to match the visual and written issues.
According to Au7o's analysis of 200+ owner reports, the 2020-2025 Cadillac XT6 has 26 documented known issues, with 10 rated critical. The most serious are Fuel Pump Jet Nozzle Blocked by a Manufacturing Burr — Engine Stalls Without Warning (Recall 20V639) ($0-$0 repair), K111 Fuel Pump Driver Control Module Internal Short — No-Start, Stalling and Dead Fuel Gauge with P023F / P129F, Roof-Rail Airbag Inflator Diffuser Improperly Crimped — Recall 20V446 ($0-$0 repair), 2021 XT6 Fuel Supply Line May Separate and Leak — Recall 21V422, 3.6L LGX Engine Oil Migrating Into the Cooling System Through Block Porosity — Overheating with Sludge in the Radiator ($3,000-$12,000 repair), 2022 XT6 Left-Rear Toe Link May Be Loose or Separate — Recall 22V427, Incorrect Transmission Sun Gear Lets the Driver-Side Half-Shaft Disengage — Recall 23V172 ($0-$0 repair), 2020 XT6 Start/Stop Accumulator May Be Missing Endcap Bolts — Recall 20V668000, Recall 22V446000: Fuel Tank Rollover Valve May Fail to Seal on 2022 XT6 and Electric Power Steering Rack Failure — "Steering Assist Is Reduced / Service Power Steering" with C0460 or C0545 ($1,500-$2,600 repair). The most commonly reported issue is 9-Speed Automatic Transmission Shudder and Harsh Shifts with 200 owner reports. Across all issues with published estimates, repair costs range from $50 to $12,000. DIY maintenance guides at au7o.io.
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
General Motors, LLC (GM) is recalling certain 2023-2025 Cadillac XT5 and 2024-2025 Cadillac XT6 vehicles. The instrument panel may not illuminate when the hazard warning lights, high beams, or turn signals are activated. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 101, "Controls and Displays" and 108, "Lamps, Reflective Devices, and Assoc. Equipment."
VISIBILITY:WINDSHIELD
General Motors, LLC (GM) is recalling certain 2023 GMC Acadia and 2024 Cadilac XT5 and XT6 vehicles. The windshield may have been assembled without the proper urethane sealant required to bond the windshield to the vehicle body.
EQUIPMENT:OTHER:LABELS
General Motors, LLC (GM) is recalling certain 2023 Cadillac XT5, XT6, and GMC Acadia vehicles. The certification label located on the driver's side B-pillar contains tire size information that may be illegible. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
POWER TRAIN:AUTOMATIC TRANSMISSION
General Motors, LLC (GM) is recalling certain 2023 Cadillac XT6, GMC Acadia, Chevrolet Blazer, Traverse, and 2022-2023 Cadillac XT5 vehicles. The transmission may have been built with an incorrect sun gear, which can result in the driver-side half-shaft disengaging from the transmission.
SERVICE BRAKES, HYDRAULIC:FLUID
General Motors, LLC (GM) is recalling certain 2022 Cadillac XT6 vehicles. The brake fluid reservoir cap may be missing the warning label. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
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According to Au7o's analysis of 200+ owner reports, the 2020-2025 Cadillac XT6 has 26 documented issues. The most frequently reported are: Fuel Pump Jet Nozzle Blocked by a Manufacturing Burr — Engine Stalls Without Warning (Recall 20V639), K111 Fuel Pump Driver Control Module Internal Short — No-Start, Stalling and Dead Fuel Gauge with P023F / P129F, Roof-Rail Airbag Inflator Diffuser Improperly Crimped — Recall 20V446. Of these, 10 are rated critical and should be addressed promptly.
The 2020-2025 Cadillac XT6 has 26 known issues documented across 200+ owner reports. 10 issues are rated critical: Fuel Pump Jet Nozzle Blocked by a Manufacturing Burr — Engine Stalls Without Warning (Recall 20V639) and K111 Fuel Pump Driver Control Module Internal Short — No-Start, Stalling and Dead Fuel Gauge with P023F / P129F and Roof-Rail Airbag Inflator Diffuser Improperly Crimped — Recall 20V446 and 2021 XT6 Fuel Supply Line May Separate and Leak — Recall 21V422 and 3.6L LGX Engine Oil Migrating Into the Cooling System Through Block Porosity — Overheating with Sludge in the Radiator and 2022 XT6 Left-Rear Toe Link May Be Loose or Separate — Recall 22V427 and Incorrect Transmission Sun Gear Lets the Driver-Side Half-Shaft Disengage — Recall 23V172 and 2020 XT6 Start/Stop Accumulator May Be Missing Endcap Bolts — Recall 20V668000 and Recall 22V446000: Fuel Tank Rollover Valve May Fail to Seal on 2022 XT6 and Electric Power Steering Rack Failure — "Steering Assist Is Reduced / Service Power Steering" with C0460 or C0545. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Cadillac XT6 issues range from $0 to $12,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Fuel Pump Jet Nozzle Blocked by a Manufacturing Burr — Engine Stalls Without Warning (Recall 20V639), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Reliability varies across model years of the Cadillac XT6. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2020-2025 Cadillac XT6 with 26 documented issues documented across 200+ owner reports.
GM recalled certain 2020 all-wheel-drive Cadillac XT6 vehicles (along with 2020 XT5, Buick Enclave, Chevrolet Traverse and GMC Acadia) because a plastic burr left over from the molding process can remain inside the fuel pump module's jet nozzle (mixing tube). The jet pump transfe… Repairs typically run $0-$0. Severity: high.
An internal short inside the K111 Fuel Pump Driver Control Module (FPDCM, also called the fuel pump power control module) can cause a cluster of drivability faults on 2021-2023 Cadillac XT6 vehicles. GM documented this first as preliminary information PIP5964 and then as service… Severity: high.
US recall 20V446 / GM N202305380 includes 18 selected 2020 XT6 vehicles within a combined 769-vehicle campaign. The XT6 build interval in the July 30, 2020 filing is March 16–July 15, 2020, with eligibility determined by part traceability. An improperly crimped inflator diffuser… Repairs typically run $0-$0. Severity: high.
If you own a 2021 Cadillac XT6, this one is worth a VIN check. GM recalled a limited group of 2021 XT6, XT5 and GMC Acadia vehicles because the fuel supply lines may have been improperly attached and seated at the factory. NHTSA's consequence statement is blunt: lines that are no… Severity: high.
GM bulletin 21-NA-108 (which superseded PIP5257E) covers engine overheating with the cooling system contaminated by engine oil, and it lists the 2020-2021 Cadillac XT6 with the 3.6L LGX V6 among the affected applications. The failure is not a head gasket in the usual sense: press… Repairs typically run $3,000-$12,000. Severity: high.
If you drive a 2022 Cadillac XT6, check this one. General Motors recalled a group of these SUVs after finding that the left-rear suspension toe link may not have been tightened properly. An under-tightened fastener can allow the toe link to go loose over time, and a loose toe lin… Severity: high.
NHTSA campaign 23V172000 (GM safety recall N222389310) covers 613 model-year 2023 Cadillac XT6 vehicles built with an incorrect sun gear inside the transmission's final drive. The wrong gear does not retain the driver-side (left front) half-shaft correctly, and the shaft can dise… Repairs typically run $0-$0. Severity: high.
Only the 2020 model year of the Cadillac XT6 falls inside this GM recall, which addresses a start/stop transmission accumulator that may have left the plant with bolts missing from its endcap. Because those bolts hold the endcap against transmission oil pressure, the missing hard… Severity: high.
Certain 2022 Cadillac XT6 crossovers were recalled by General Motors for a fuel tank rollover valve that may not seal properly in a rollover crash. NHTSA files the defect against the gasoline storage tank assembly. The rollover valve's whole purpose is to shut the tank's vent pat… Severity: high.
XT6 owners report a "Steering Assist is Reduced — Drive with Care" or "Service Power Steering" message in the driver information center, usually with a noticeable increase in steering effort. GM bulletin 20-NA-215 covers this condition on the XT5 and XT6 and ties it to DTCs C0460… Repairs typically run $1,500-$2,600. Severity: high.
The XT6's GM 9T65 9-speed automatic transmission exhibits shuddering during light throttle acceleration between 25-50 mph, similar to driving over rumble strips. The torque converter clutch wears prematurely, contaminating the transmission fluid. Repairs typically run $150-$2,500. Severity: medium.
GM bulletin PIP6101A adds the 2.0L turbocharged LSY engine to a valvetrain ticking concern originally documented for the LK0 and L3B engines under PIP6061. On affected 2025 Cadillac XT6 vehicles with the LSY, owners may hear a top-end ticking noise from the valvetrain area. The c… Severity: medium.
GM bulletin PIP5863B addresses an illuminated malfunction indicator lamp with DTC U0672, lost communication with electric engine coolant pump G59. Its North American applicability includes XT6 vehicles with the 2.0L LSY engine. A pump-connection problem is a potential cause; the… Severity: medium.
If your 2020 or 2021 Cadillac XT6 was ordered with the optional Surround Vision feature, it may be part of NHTSA recall 22V709000. GM found that the coaxial cable connectors carrying the rearview camera signal may have been crimped improperly, and a faulty crimp can cause the rea… Severity: medium.
GM bulletin 21-NA-240 describes an engine oil leak that may result from the amount of sealant at the LSY camshaft-carrier gasket. Oil can appear to originate at another front-engine joint. The bulletin directs technicians to locate the actual leak before selecting a repair; it do… Severity: medium.
The Power Transfer Unit (PTU) on AWD-equipped XT6 models develops seal leaks that allow fluid to seep out. Low PTU fluid causes the internal gears and bearings to wear prematurely, eventually producing a whining noise. The PTU is not included in routine maintenance schedules, so… Repairs typically run $200-$2,000. Severity: medium.
GM PIP5608F covers 2020-2021 XT6 vehicles with 9-speed transmissions RPO M3G or M3W when torque-converter clutch shudder occurs on re-apply after a shift at 40 mph or below. GM identifies possible excessive assembly lubricant in the fluid and requires confirmation with TCC slip d… Severity: medium.
NHTSA campaign 23V681000 covers 2024 Cadillac XT6 vehicles whose windshield may not have been bonded to the body with the proper urethane sealant during assembly. The windshield is a structural part of the vehicle: it braces the roof in a rollover and it provides the backstop the… Repairs typically run $0-$0. Severity: medium.
NHTSA campaign 24V459000 covers late-build Cadillac XT6 vehicles on which the instrument panel cluster may not illuminate when the hazard warning lights, high beams, or turn signals are activated. The cluster software fails to light the corresponding telltales, so the driver gets… Repairs typically run $0-$0. Severity: medium.
GM bulletin 19-NA-167 covers water leaking into the interior on the 2020-2021 Cadillac XT6 (alongside the 2017-2021 XT5 and GMC Acadia). Owners find wet carpet or headliner at the front and/or rear, on either side, typically after rain or a car wash. The cause is not the sunroof… Repairs typically run $300-$1,200. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
