2022 GMC Sierra 3500HD Reliability: BPMV, Transmission, 4WD and Leaf-Spring Checks

The exact 2022 query contains three distinct campaigns

The exact Sierra 3500 query is smaller than the corresponding 2021 set and should not inherit its two seat-belt actions. Each 2022 record has a different equipment branch, warning and remedy. A generic statement that recalls were completed is not enough; match the candidate's VIN, powertrain and tailgate equipment to the current manufacturer or government record.

The query is a U.S. model-year result, not proof that a particular Canadian truck is included or excluded. Campaign data and completion status can change, so preserve the dated VIN result and the itemized repair order used for the purchase decision.

21V758 is a production-subset brake-modulator action

GM's Part 573 filing says the affected 2021–2022 Sierra 2500/3500 population was identified from trucks whose electronic brake control module had been replaced during vehicle assembly. Bolts joining subassemblies within the brake pressure modulator valve may not have been tightened sufficiently to prevent water intrusion, creating a short-circuit and underhood-fire risk.

The published instruction for an affected unrepaired truck is to park outside and away from structures until the repair is completed. The remedy is BPMV replacement. It is not an owner-tightening procedure, a brake-pad-life reset or evidence that every 2022 Sierra 3500HD shares the condition.

The filing groups 1,052 GMC Sierra 2500/3500 vehicles across the affected production subset; it does not provide a Sierra 3500 model-wide failure percentage. Confirm the individual VIN and repair order before bringing an unresolved truck indoors or beginning an inspection.

The brake-pad-life percentage can be reset or disabled

The exact 2022 HD owner manual describes the front and rear brake-pad-life percentages as estimates. The system is reset after pad replacement and can also be reset manually. A high displayed percentage therefore does not replace an inspection of pad thickness, rotors, sensors, fluid condition and both axles' service history.

The manual permits the display system to be disabled, including when aftermarket pads without wear sensors are installed. The percentages then disappear, while the mechanical wear indicators remain. Missing percentages do not by themselves diagnose an EBCM or BPMV fault, and restoring the display is not the recall remedy.

GMC says pads should be replaced as complete axle sets. The manual also distinguishes normal lining-related fluid movement from a hydraulic leak and warns that topping up fluid does not repair a leak. Reconcile the display, invoices and physical findings rather than treating any one of them as conclusive.

24V797 applies to the diesel transmission branch

24V797000 includes certain diesel-powered 2020–2022 Sierra 2500 and 3500 trucks. GM's filing describes transmission-control-valve wear, pressure loss, harsh shifting and possible momentary rear-wheel lockup. Gasoline trucks are excluded because they use a different transmission, so an engine badge is a required part of the scope check.

The remedy software monitors valve performance and can limit the transmission to fifth gear while displaying a service-engine light and reduced-propulsion message when the condition is detected. A completed software campaign is not proof that worn hardware was replaced. Separate the calibration record from any valve-body or transmission repair and from routine fluid service.

Do not attempt to reproduce wheel lockup or harsh downshifts during a purchase drive. Warning messages, abnormal shifting or a history of protective-mode operation should lead to professional diagnosis before towing or further load testing. The recall filing does not supply a model-wide failure rate.

24V060 depends on the installed tailgate equipment

24V060000 covers certain 2020–2024 Sierra 2500/3500 HD trucks with the manual gate, power lock and power-release configuration identified by RPO QT5. GM's filing says water can reach the electronic release switch, cause a short circuit and allow the tailgate to unlatch while the truck is in Park.

The remedy replaces the exterior touchpad switch assemblies. Until completed, the published instruction is to verify that the tailgate is closed and latched before driving. That equipment-specific boundary matters: a different tailgate, a loose latch, damaged hardware or a cargo-retention problem should not be relabelled as the same electrical condition without diagnosis.

Inspect the gate, hinges, cables, latch engagement and any hitch or trailer-clearance damage. Record the installed tailgate RPO and the campaign completion document; do not infer applicability from a photo of the gate alone.

20-NA-209 turns a Service 4WD message into a conditional connector check

GM bulletin 20-NA-209 applies to 2019–2022 Sierra 2500HD/3500HD trucks with all listed engines and transmissions. It addresses a Service 4WD message with DTC C118D, C119B and/or C119C and identifies possible water intrusion or corrosion at the front-drive-axle actuator connector and harness terminals.

The bulletin instructs technicians to confirm the listed codes and inspect the actuator housing, connector seal and terminals. Replacement of both the actuator and the connecting harness is tied to finding moisture, corrosion or damage. The title alone does not authorize parts replacement and does not show that every four-wheel-drive concern has this cause.

For a used 4WD truck, request the scan record and itemized repair. Check for repeat messages, connector or harness work, fluid leakage and appropriate mode engagement under the owner's-manual procedure. Do not force a shift or treat a cleared message as proof of repair.

21-NA-138 separates leaf-spring noise from a structural verdict

GM bulletin 21-NA-138 includes 2019–2022 Sierra 2500HD/3500HD trucks and addresses a squeak, grind or clunk from the rear leaf springs. It says the condition may come from the spring insert interacting with the leaf and also notes that some noise is characteristic when leaf-spring suspensions travel over bumps.

The published correction uses revised spring-tip inserts. GM notes that replacement inserts can have a break-in period of up to 1,610 km, during which some noise may remain. That does not prove that every rear noise is normal or that the springs, shackles, hangers, axle attachment and frame need no inspection.

Document when the noise occurs, the truck's load state and whether the inserts were replaced. Have a technician separate insert noise from looseness, cracked or shifted components, overload evidence and hitch- or body-related contact. A bulletin match is a diagnostic lead, not a reliability score.

Verdict and purchase checklist

A supportable 2022 Sierra 3500HD purchase is one whose VIN campaign status, gas or diesel powertrain, tailgate equipment, brake condition, four-wheel-drive findings, rear suspension and work history agree. Request the build information, current Canadian or U.S. VIN report, itemized service file and towing or modification history before assigning the truck a condition grade.

The owner manual distinguishes CHECK TRAILER WIRING from SERVICE TRAILER BRAKE SYSTEM. The first can require separating vehicle-side from trailer-side wiring; the second identifies an ITBC-system problem that needs service if it persists across ignition cycles. Either message can mean reduced or absent integrated trailer-brake operation, so acknowledge-and-clear behaviour is not a repair.

This review does not establish a best or worst year, predict remaining life, assign repair prices or certify emissions, towing or Canadian recall status. No 2021 restraint campaign or 2020-only follow-up transmission action was transferred into the exact 2022 query. The commercial link remains a catalogue of disclosed editorial profiles, not live inventory, a verified seller, dealer counts, financing or an offer.