ClaimRight · Warranty Denial Guides
Mack Pinnacle (Cxu) warranty claim denied?
361 manufacturer communications on file
4 warranty extensions / campaigns 2007–2022 model years covered
If your Mack Pinnacle warranty claim was just denied, it helps to know you're not alone in raising this issue. For the 2007–2022 Pinnacle (Cxu), the manufacturer has filed 361 service communications with federal safety regulators, including four formal warranty extensions issued in September 2023 covering the Fuel Control Module, the Pre-SCR NOx Sensor, and the EGR Cooler. Mack has also published technical bulletins addressing AMT-D/AMT-F transmission faults, turbo compound hot-side noise, Driver Information Display malfunctions after cluster replacement, and specific diagnostic trouble codes like P107471.
When a dealer denies a claim, it doesn't always mean the issue falls outside documented coverage — sometimes the denial overlooks an active extension, a related bulletin, or incomplete diagnostic documentation. A denial is a starting point for review, not necessarily the final word.
ClaimRight helps owners compare their repair history and symptoms against the manufacturer's own filed records to see whether a documented basis exists for reopening the claim. A free assessment reviews your paperwork and the applicable bulletins for your vehicle, so you can understand your realistic options before deciding how to proceed.
What Mack has documented for the Pinnacle (Cxu)
Filed with NHTSA by the manufacturer. Warranty extensions are the strongest signal — the manufacturer acknowledging a defect and extending coverage for it.
2023-09-28 · U111 202309
Warranty extension Owner Notification Letter, Extended Warranty Coverage U111. The Fuel Control Module is the component provided coverage under this warranty extension.
Official NHTSA document →
2023-09-28 · U112 202309
Warranty extension Owner Notification Letter, Extended Warranty Coverage U112. The Pre-SCR NOx Sensor is the component provided coverage under this warranty extension.
Official NHTSA document →
2023-09-28 · U113 202309
Warranty extension Owner Notification Letter, Extended Warranty Coverage U113. The Pre-SCR NOx Sensor is the component provided coverage under this warranty extension.
Official NHTSA document →
2023-09-28 · U114 202309
Warranty extension Owner Notification Letter, Extended Warranty Coverage U114. The EGR Cooler is the component provided coverage under this warranty extension.
Official NHTSA document →
2024-04-22 · CBR-1008 202404
CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-5...
Official NHTSA document →
2024-03-01 · CBR-2356 202403
CBR: After cluster replacement and programming, the Driver Information Display (DID) may not function as designed.
Official NHTSA document →
2024-02-16 · CBR-2014 202402
CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
Official NHTSA document →
2024-02-16 · CBR-202 202402
CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
Official NHTSA document →
2024-02-16 · CBR-2347 202402
CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
Official NHTSA document →
2023-12-13 · S7644 202312
Service Campaign: Mack trucks has determined the certain AN, GR, PI and TE model trucks with a MP-8 could have a defective oil pick-up strainer.
Official NHTSA document →
2023-12-01 · CBR-2320 202312
CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures...
Official NHTSA document →
2023-11-10 · PSM23m2na71
Parts Sales and Marketing Bulletin: Mack Trucks is excited to announce an additional year warranty program on REMACK AMT mDRIVE Complete Transmissions. This extended warranty of 3...
Official NHTSA document →
2023-11-07 · M-465-001 202311
TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 f...
Official NHTSA document →
2023-10-19 · CBR-399 202310
CBR: Vehicle Overspeed Warning Comes Active At A Lower Speed Than Expected; Vehicle Overspeed Warning In Driver Information Display (DID) - Model Year 2018 And Newer With New Style...
Official NHTSA document →
2023-10-19 · CBR-995 202310
CBR: Telematics Gateway ( TGW, MID 142 ) Losing Communication With The Instrument Cluster ( IC ) - Counts Of Fault Code (FC) MID 140 PSID 239 FMI 12 Data Link, MID 142 Faulty Devic...
Official NHTSA document →
2023-10-12 · CBR-206 202310
CBR: Vehicle Speed Factor (K-Factor) Programming - Speed Factor Value Incorrect When Calculated In Premium Tech Tool (PTT); Speedometer Reading Incorrectly Following A Change To Ve...
Official NHTSA document →
2023-09-22 · CBR-570 202309
CBR: Model Year 2017, 2018 - US17GHG Common Rail Fuel System Component Electrical Faults
Official NHTSA document →
2023-09-05 · M-258-014 202309
TSB: Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
Official NHTSA document →
Common questions
Why would Mack deny a warranty claim if there's a documented bulletin for the issue?
Dealers sometimes process claims without cross-checking every applicable bulletin or extension on file with regulators. A technician may miss that a part, like the Fuel Control Module or EGR Cooler, falls under an active extension. Reviewing the claim against the manufacturer's own filed communications can reveal whether the denial accounted for all applicable coverage.
What is a warranty extension, and does it apply after the original warranty expired?
A warranty extension is a manufacturer-issued notice adding coverage time or mileage for a specific component, often due to a known defect pattern. These extensions are typically separate from the standard warranty term and can apply even if the base warranty has expired, depending on the vehicle's mileage, age, and the specific component affected.
Can a denied warranty claim be reopened or reviewed again?
Many denials can be reconsidered when supported by documentation such as repair orders, diagnostic codes, or applicable service bulletins. There's no guarantee of a specific outcome, but gathering the right records and comparing them to manufacturer-filed communications is a reasonable first step before deciding whether to request a second review.
Check your denial free — no fee unless we get you savings →