Chevrolet · Known Issues

2012 Chevrolet Avalanche Problems: 6 Issues Every Owner Should Know

2012 model year · 1,240+ owner reports · Updated June 2026

According to Au7o's analysis of 1,240+ owner reports, the 2012 Chevrolet Avalanche has 6 documented known issues, with 3 rated critical. The most serious are 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure ($300-$4,000 repair), Excessive Oil Consumption & AFM Lifter Failure (5.3L V8) ($1,500-$4,500 repair) and 4L60E Transmission 3-4 Clutch Failure / Slipping ($1,500-$3,500 repair). The most commonly reported issue is 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure with 580 owner reports. Across all issues, repair costs range from $50 to $4,500. DIY maintenance guides at au7o.io.

All 6 Known Issues

NewAI Photo & Video Diagnosis

Not sure this is what you've got?

Upload a photo or video — Au7o will confirm the match and check for other common failures at the same time.

Upload & confirm

Community Reported

580 owners

On the 2007-2013 Chevrolet Avalanche 5.3L V8, the 5.3L Vortec V8 with Active Fuel Management (AFM/DOD) in 2007-2013 Avalanches suffers from excessive oil consumption and premature lifter failure. The AFM system deactivates four cylinders for fuel economy, but the AFM lifters have a coating that wears off prematurely, leading to collapsed lifters, bent pushrods, fouled spark plugs, and catastrophic engine damage. GM issued TSB 10-06-01-008A for oil deflector installation but never recalled the vehicles. Oil consumption of 1 quart per 1,000 miles is commonly reported.

This issue also affects: Acura MDX, Acura TL, Audi Q7

Common Symptoms

Oil consumption of 1 quart per 1,000 miles or more
Blue smoke from exhaust on startup or acceleration
Misfire codes on AFM-controlled cylinders (1,4,6,7)
Check engine light with cylinder-specific misfire codes
Lifter tick or knock noise from engine

How to Fix

Monitor oil level weekly and top off as needed. For a permanent fix, perform an AFM delete which involves replacing the camshaft, all 16 lifters, and valley cover with non-AFM components ($2,000-$4,000 parts and labor). An AFM disabler device ($300-$500) can reduce the issue by preventing cylinder deactivation. Change oil every 5,000 miles with full synthetic.

What Owners Are Using

Parts and tips from 580+ owners who fixed this issue

TipAn AFM disabler like the Range Technology AFM Disabler ($300) prevents cylinder deactivation and dramatically reduces oil consumption. This is the cheapest first step before committing to a full AFM delete. Pair it with 5,000-mile oil changes using full synthetic
NoteDo NOT ignore excessive oil consumption on the 5.3L AFM engine. Running low on oil with AFM active leads to collapsed lifters, bent pushrods, and catalytic converter damage from oil fouling. Check oil level at every fuel stop. A full AFM delete ($2,000-$4,000) is the only permanent fix
UpgradeHigh-quality synthetic oil helps reduce consumption and protect worn engines (Mobil 1 Extended Performance Full Synthetic Motor Oil)
View on Amazon
UpgradePremium oil filter ensures proper filtration with high-mileage engines (Wix Oil Filter)
View on Amazon

Typical repair cost:$300 - $4,000

Research This Issue

580+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High Confidence580 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2007-2013 Chevrolet Avalanche, the 5.3L V8 with Active Fuel Management (AFM/cylinder deactivation) is prone to two linked failures: excessive oil consumption from worn piston rings and an AFM oil deflector that sprays oil at the cylinder walls, and collapsed/failed AFM lifters that can damage the camshaft. Burning oil fouls spark plugs and can trip low-oil shutdown commands; a failed lifter causes a ticking/knocking misfire. GM settled the Siqueiros class action ($150M) over the LC9 5.3L piston-ring defect for 2011-2014 vehicles built on/after Feb 10, 2011.

This issue also affects: Acura MDX, Acura TL, Audi A4

Common Symptoms

Burning oil / low oil between changes
Blue exhaust smoke
Fouled spark plugs
Engine ticking or knocking
Misfire
Check engine light
Sudden low-oil shutdown warning

How to Fix

For oil consumption, GM's TSB remedy involves replacing the AFM oil-pressure relief valve/deflector and often the pistons/rings; many owners delete AFM (range-disabler or PCM tune + delete kit) to prevent recurrence. For a failed lifter, replace the lifters (and cam if scored), commonly done alongside an AFM delete. Eligible owners can file under the Siqueiros settlement.

Typical repair cost:$1,500 - $4,500

Research This Issue

0+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

Community Reported

310 owners

On the 2007-2013 Chevrolet Avalanche, the 2007-2013 Avalanche frequently enters "Reduced Engine Power" mode, severely limiting acceleration. The most common causes are the electronic throttle body wearing out or the accelerator pedal position sensor (APP sensor) developing faults. The vehicle becomes barely drivable in this mode, struggling to accelerate to highway speeds. The issue can occur intermittently before becoming permanent.

This issue also affects: Ford Explorer, Ford Transit, Buick Lucerne

Common Symptoms

"Engine Power Reduced" or "Reduced Engine Power" message on dash
Vehicle struggles to accelerate past 20-30 mph
Check engine light with P2128 or P2138 codes
Intermittent power loss that resolves after restart
Rough or hesitant throttle response

How to Fix

Diagnose with a scan tool to determine if the throttle body or accelerator pedal position sensor is the cause. Throttle body replacement costs $200-$400 parts and labor. APP sensor replacement costs $100-$250. A remanufactured throttle body from a quality source works well. Clear codes after repair and road test to verify.

What Owners Are Using

Parts and tips from 310+ owners who fixed this issue

TipP2128 and P2138 codes point to the accelerator pedal position (APP) sensor, not the throttle body. The APP sensor is a $50-$100 part and takes 15 minutes to replace. Do NOT let a shop sell you a throttle body without confirming the APP sensor is not the cause - it is the cheaper and more common fix
TipIf the throttle body is confirmed bad, AC Delco remanufactured units are the best value. Aftermarket throttle bodies for the 5.3L are hit-or-miss. Clean the throttle body with CRC Throttle Body Cleaner before replacing - sometimes carbon buildup alone causes the reduced power mode
UpgradeThrottle body cleaner can resolve hesitation and idle issues (CRC Throttle Body Cleaner)
View on Amazon
UpgradeReplacement throttle body for units with failed motors or sensors (Dorman Throttle Body Assembly)
View on Amazon

Typical repair cost:$100 - $500

Research This Issue

310+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High Confidence310 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2002-2013 Chevrolet Avalanche, avalanches equipped with the 4L60E automatic commonly lose 3rd and 4th gear due to 3-4 clutch pack burnout, a known factory weak point. The long fluid circuit feeding the 3-4 clutch leaks at the input housing (steel shaft galls the aluminum bore) and at the 2-4 servo, so the clutches slip, overheat, and burn. Symptoms are smooth 1-2 shifts but a flare/neutral feeling into 3rd, often with delayed engagement.

This issue also affects: Audi A4 Avant, Audi A4, Audi A6

Common Symptoms

No 3rd/4th gear (feels like neutral)
Slipping under acceleration
RPM flares between shifts
Delayed engagement
Burnt fluid smell

How to Fix

Rebuild the transmission with upgraded 3-4 clutch frictions/steels, a new/updated input housing, forward and 3-4 clutch pistons, and resealed 2-4 servo; severe cases get a full remanufactured unit. Adding a transmission cooler helps prevent recurrence.

Typical repair cost:$1,500 - $3,500

Research This Issue

0+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

Community Reported

350 owners

On the 2007-2013 Chevrolet Avalanche, the 2007-2013 Chevrolet Avalanche (and related GMT900 trucks) suffers from widespread dashboard cracking. The upper dashboard material shrinks and cracks due to UV exposure and heat cycling, with cracks typically developing above the instrument cluster, over the passenger airbag panel, and at the windshield defroster vents. Over 100 complaints have been filed with NHTSA. There are safety concerns that dashboard fragments could become projectiles during airbag deployment in a crash.

Common Symptoms

Visible cracks in dashboard above instrument cluster
Cracks near passenger-side airbag panel
Dashboard material warping or bubbling
Cracks appear primarily in sun-exposed areas
Dashboard surface becomes brittle and flaky

How to Fix

Dashboard replacement is the proper fix but costs $1,500-$2,500 installed at a dealer. More affordable options include dash covers ($50-$100), dashboard replacement kits ($200-$400), or professional dashboard repair services ($300-$600). A class-action lawsuit was filed but GM has not issued a recall.

What Owners Are Using

Parts and tips from 350+ owners who fixed this issue

TipA quality dash cover ($50-$100) from DashMat or Coverlay is the most cost-effective solution. The Coverlay dashboard replacement panel ($200-$400) fits over the existing cracked dash and looks factory. A full dashboard replacement at a dealer is $1,500-$2,500 and rarely worth it on a high-mileage truck
TipUse a windshield sun shade when parked to slow dashboard deterioration. UV exposure is the primary cause of cracking. A quality ceramic window tint on the windshield also helps reduce UV damage to the interior
UpgradeTrim removal tool set for body panel work without damage (MICTUNING Trim Removal Tool Set)
View on Amazon
UpgradeBondo body filler for dent and panel repair (Bondo Body Filler Kit)
View on Amazon

Typical repair cost:$50 - $2,500

Research This Issue

350+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High Confidence350 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2007-2013 Chevrolet Avalanche, second-generation Avalanches built on the GMT900 platform are widely reported to develop spider-web cracks in the dashboard, typically starting around the passenger airbag seam and above the instrument cluster. Cracking usually appears after years of UV/heat exposure, and owners report it spreading progressively (audibly worsening over bumps). GM never issued a recall, and a multi-state class action (E.D. Michigan) was dismissed in GM's favor on appeal, leaving owners to pay for replacement.

Common Symptoms

Cracks above instrument cluster
Cracks near passenger airbag seam
Spreading spider-web cracks
Audible creaking/cracking over bumps

How to Fix

Replace the dashboard pad/panel assembly (dealer or aftermarket), or fit an aftermarket dash cap/overlay as a lower-cost cosmetic fix. There is no warranty/recall remedy, so most owners pay out of pocket or use a cover.

Typical repair cost:$200 - $2,000

Research This Issue

0+ owners have reported this issue

Google Reddit YouTube NHTSA

Community Reported

High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

Frequently Asked Questions

What are the most common Chevrolet Avalanche problems?

According to Au7o's analysis of 1,240+ owner reports, the 2012-2012 Chevrolet Avalanche has 6 documented issues. The most frequently reported are: 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure, Excessive Oil Consumption & AFM Lifter Failure (5.3L V8), 4L60E Transmission 3-4 Clutch Failure / Slipping. Of these, 3 are rated critical and should be addressed promptly.

Is the Chevrolet Avalanche reliable?

The 2012-2012 Chevrolet Avalanche has 6 known issues documented across 1,240+ owner reports. 3 issues are rated critical: 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure and Excessive Oil Consumption & AFM Lifter Failure (5.3L V8) and 4L60E Transmission 3-4 Clutch Failure / Slipping. 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.

How much does it cost to fix common Chevrolet Avalanche problems?

Repair costs for known Chevrolet Avalanche issues range from $50 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure, typically costs $300-$4,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2007-2013 Chevrolet Avalanche 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure?

The 5.3L Vortec V8 with Active Fuel Management (AFM/DOD) in 2007-2013 Avalanches suffers from excessive oil consumption and premature lifter failure. The AFM system deactivates four cylinders for fuel economy, but the AFM lifters have a coating that wears off prematurely, leading… Repairs typically run $300-$4,000. Severity: high.

What is the 2007-2013 Chevrolet Avalanche Excessive Oil Consumption & AFM Lifter Failure (5.3L V8)?

The 5.3L V8 with Active Fuel Management (AFM/cylinder deactivation) is prone to two linked failures: excessive oil consumption from worn piston rings and an AFM oil deflector that sprays oil at the cylinder walls, and collapsed/failed AFM lifters that can damage the camshaft. Bur… Repairs typically run $1,500-$4,500. Severity: high.

What is the 2002-2013 Chevrolet Avalanche 4L60E Transmission 3-4 Clutch Failure / Slipping?

Avalanches equipped with the 4L60E automatic commonly lose 3rd and 4th gear due to 3-4 clutch pack burnout, a known factory weak point. The long fluid circuit feeding the 3-4 clutch leaks at the input housing (steel shaft galls the aluminum bore) and at the 2-4 servo, so the clut… Repairs typically run $1,500-$3,500. Severity: high.

What is the 2007-2013 Chevrolet Avalanche Reduced Engine Power Mode from Throttle Body and Pedal Sensor Faults?

The 2007-2013 Avalanche frequently enters "Reduced Engine Power" mode, severely limiting acceleration. The most common causes are the electronic throttle body wearing out or the accelerator pedal position sensor (APP sensor) developing faults. The vehicle becomes barely drivable… Repairs typically run $100-$500. Severity: medium.

What is the 2007-2013 Chevrolet Avalanche Dashboard Cracking Above Instrument Cluster and Airbag Panel?

The 2007-2013 Chevrolet Avalanche (and related GMT900 trucks) suffers from widespread dashboard cracking. The upper dashboard material shrinks and cracks due to UV exposure and heat cycling, with cracks typically developing above the instrument cluster, over the passenger airbag… Repairs typically run $50-$2,500. Severity: low.

What is the 2007-2013 Chevrolet Avalanche Cracked Dashboard (GMT900 Models)?

Second-generation Avalanches built on the GMT900 platform are widely reported to develop spider-web cracks in the dashboard, typically starting around the passenger airbag seam and above the instrument cluster. Cracking usually appears after years of UV/heat exposure, and owners… Repairs typically run $200-$2,000. Severity: low.

2012 Chevrolet Avalanche Problems: 6 Issues Every Owner Should Know

All 6 Known Issues

2007-2013 Chevrolet Avalanche: 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2007-2013 Chevrolet Avalanche: Excessive Oil Consumption & AFM Lifter Failure (5.3L V8)#

Common Symptoms

How to Fix

Research This Issue

2007-2013 Chevrolet Avalanche: Reduced Engine Power Mode from Throttle Body and Pedal Sensor Faults#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2002-2013 Chevrolet Avalanche: 4L60E Transmission 3-4 Clutch Failure / Slipping#

Common Symptoms

How to Fix

Research This Issue

2007-2013 Chevrolet Avalanche: Dashboard Cracking Above Instrument Cluster and Airbag Panel#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2007-2013 Chevrolet Avalanche: Cracked Dashboard (GMT900 Models)#

Common Symptoms

How to Fix

Research This Issue

Other Chevrolet Models

Frequently Asked Questions

What are the most common Chevrolet Avalanche problems?

Is the Chevrolet Avalanche reliable?

How much does it cost to fix common Chevrolet Avalanche problems?

What is the 2007-2013 Chevrolet Avalanche 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure?

What is the 2007-2013 Chevrolet Avalanche Excessive Oil Consumption & AFM Lifter Failure (5.3L V8)?

What is the 2002-2013 Chevrolet Avalanche 4L60E Transmission 3-4 Clutch Failure / Slipping?

What is the 2007-2013 Chevrolet Avalanche Reduced Engine Power Mode from Throttle Body and Pedal Sensor Faults?

What is the 2007-2013 Chevrolet Avalanche Dashboard Cracking Above Instrument Cluster and Airbag Panel?

What is the 2007-2013 Chevrolet Avalanche Cracked Dashboard (GMT900 Models)?