2021 GMC Yukon

Engine

Engine and cooling problems are among the most serious defects under California’s Song-Beverly Act. Owners of the 2021 GMC Yukon have reported issues including stalling, overheating, loss of power, rough idling, excessive oil consumption, and check engine lights that return after dealer repairs. With 286 NHTSA complaints on record, this defect pattern is well-documented. Owner reports include: “My vehicle started making a weird noise and when I took it to the shop, they told me my crankshaft has gone bad and I was lucky I caught it before the entire engine blew” (NHTSA Complaint #11722330)

Engine & Cooling

Engine and cooling problems are among the most serious defects under California’s Song-Beverly Act. Owners of the 2021 GMC Yukon have reported issues including stalling, overheating, loss of power, rough idling, excessive oil consumption, and check engine lights that return after dealer repairs. With 70 NHTSA complaints on record, this defect pattern is well-documented. Owner reports include: “The contact owns a 2021 GMC Yukon. The contact stated that while shifted into drive(D), the accelerator pedal was depressed, and the vehicle lost motive power, and several unknown warning lights were illuminated. The contact stated that the check engine, stability control, and several other warning lights were illuminated. The contact stated that the vehicle was making abnormal whining sounds, and the vehicle failed to accelerate above 20 MPH. The contact had been experiencing the loss of motive power with the vehicle for approximately 2 years; however, the failure was intermittent. The contact had taken the vehicle to a local dealer on several occasions; however, the failure persisted. The contact notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); and the vehicle was taken to a local dealer for the engine to be tested. The contact was advised by the dealer that the engine had passed the test, and a higher viscosity oil was added, and the oil filter and oil filler tube were replaced, along with updating the manual. The vehicle was repaired; however, it was still experiencing a loss of power with several warning lights illuminated. The manufacturer was made aware of the failures. The failure mileage was approximately 42,000.” (NHTSA Complaint #11717207)

Powertrain

Powertrain and transmission defects directly impair the vehicle’s core function and are generally considered substantial defects under California lemon law. Owners of the 2021 GMC Yukon have reported harsh shifting, shuddering, slipping, and transmission warning lights. 58 NHTSA complaints have been submitted for this defect category. Owner reports include: “I was pulling out of my driveway when I noticed that my mailbox was blown open from a recent storm. I stopped and put it in reverse (well tried to) but the vehicle would not shift. Quickly I continued to drive to make a u-turn instead and at that point my vehicle would not drive normally. The rpms would not go up despite pressing the gas and the engine was reving very high.gm dealer said 700 to pull the transmission to determine the issue, but after my research I’m certain it’s the valve failure in the transmission just as it’s done the same to others. Why is this transmission not recalled, but the disel engines on the same model are? Seems as though it is a similar issue. I’m afraid to see what they will charge me as my vehicle has 76,000 miles and I’m told is outside warranty coverage.” (NHTSA Complaint #11724498)

Fuel System

Fuel and propulsion system defects can cause stalling, fuel leaks, or power loss — all substantial impairments of use and safety. The 2021 GMC Yukon has generated 44 NHTSA complaints for this defect category. Owner reports include: “Vehicle would not start. Vehicle was towed to GMC dealership for inspection. Vehicle diagnosed with “Fuel Pump Driver Control Module” issue and needed to be replaced. This was a known issue for the 2021 GMC Yukon: GMC Service Bulletin: #24-NA-139 (Release Date August 2024) Emission Recall: N212332040 (Release Date September 2021) Emission Recall: N252516900 (Release Date September 2025) However, this VIN was not covered under the recalls and payment was required out of pocket. Recall(s) need to be expanded to include additional 2021 GMC Yukon VINs – including this one.” (NHTSA Complaint #11690931)

Power Train,Engine

Engine and cooling problems are among the most serious defects under California’s Song-Beverly Act. Owners of the 2021 GMC Yukon have reported issues including stalling, overheating, loss of power, rough idling, excessive oil consumption, and check engine lights that return after dealer repairs. With 42 NHTSA complaints on record, this defect pattern is well-documented. Owner reports include: “My 2021 GMC Yukon suffered the same engine failure that is the subject of the recall. It has just over 70,000 miles. I’m now told I need a new engine. The dealer confirmed that this is the same issue that has impacted other similar vintage Yukons.” (NHTSA Complaint #11720183)

Active NHTSA Recalls — 2021 GMC Yukon

The following 13 recalls have been issued for the 2021 GMC Yukon by the NHTSA or GMC. If your vehicle is affected, the manufacturer is required to provide a free remedy. Check your VIN at NHTSA.gov/recalls.

California Lemon Law — Song-Beverly Act

California’s Song-Beverly Consumer Warranty Act (Cal. Civ. Code §§ 1790–1795.8) is one of the strongest lemon laws in the United States. It protects buyers and lessees of new and certified pre-owned vehicles that develop substantial defects the manufacturer cannot repair after a reasonable number of attempts.

Under Cal. Civ. Code § 1793.22, a lemon law presumption is triggered when any of the following apply to your 2021 GMC Yukon:

• 4+ repair attempts for the same non-safety defect without resolution
• 2+ repair attempts for a defect likely to cause death or serious bodily injury
• 30+ calendar days out of service for warranty repairs (cumulative, not consecutive)

Once the presumption is triggered, the burden shifts to GMC to prove the vehicle is not a lemon. Under Cal. Civ. Code § 1794(d), GMC must pay your attorney’s fees if you prevail — meaning qualified representation costs you nothing out of pocket.

What You Can Recover

If your 2021 GMC Yukon qualifies as a lemon under California law, GMC may be legally required to:

• Repurchase your vehicle — Full refund of your down payment, all monthly payments, registration fees, and incidental costs (towing, rentals), minus a mileage offset for miles driven before the first repair attempt
• Replace your vehicle — Provide a new, comparable vehicle at no cost to you
• Pay your attorney’s fees — Under § 1794(d), GMC pays all legal fees if you prevail
• Civil penalty up to 2x damages — If GMC willfully violated the Act, courts may award double the actual damages

Steps to Protect Your 2021 GMC Yukon Claim

Step 1: Document every repair visit. Keep all repair orders, work orders, and dealer invoices. Each visit counts as a repair attempt, even if the dealer says nothing is wrong.

Step 2: Keep returning for repairs. You must give GMC a reasonable opportunity to fix the defect. Visit different authorized GMC dealers if needed and ask for written documentation of each visit.

Step 3: Contact a California lemon law attorney. Once you believe the threshold has been met — 4 attempts for non-safety defects, 2 for safety defects, or 30 days out of service — contact an attorney for a free case evaluation. Under § 1794(d), GMC pays your fees if you win.

Step 4: Send a demand letter. Your attorney will send GMC a formal demand letter. Most California lemon law cases resolve through negotiation without going to trial.

2021 GMC Yukon Lemon Law Questions

How many repair attempts qualify my 2021 GMC Yukon as a lemon?

Under Cal. Civ. Code § 1793.22, four or more repair attempts for the same non-safety defect, or two attempts for a safety-related defect, triggers the lemon law presumption. Additionally, 30 or more cumulative days out of service qualifies regardless of the number of repair attempts.

Does GMC pay my attorney fees?

Yes. Under Cal. Civ. Code § 1794(d), GMC is required to pay your reasonable attorney’s fees and court costs if you prevail in a lemon law claim. This means qualified lemon law representation is free to you if your case succeeds.

Can I file a lemon law claim without an active recall?

Yes. A recall is not required to file a lemon law claim. The Song-Beverly Act covers any substantial defect that impairs the use, value, or safety of the vehicle that the manufacturer cannot repair after a reasonable number of attempts. NHTSA complaints support the claim by establishing a pattern, but are not a prerequisite.

What is the time limit to file a lemon law claim for my 2021 GMC Yukon?

California lemon law claims are generally subject to a four-year statute of limitations from the date you discovered or should have discovered the defect. However, you must still be within the manufacturer’s original warranty period when the defect first appears. Contact an attorney promptly to preserve your rights.