Chevrolet · Known Issues

2002-2013 Chevrolet Avalanche Problems: 13 Issues Every Owner Should Know

2002-2013 model years · 1,860+ owner reports · Updated June 2026

According to Au7o's analysis of 1,860+ owner reports, the 2002-2013 Chevrolet Avalanche has 13 documented known issues, with 5 rated critical. The most serious are 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure ($300-$4,000 repair), Brake Line Corrosion (Salt-Belt Vehicles) ($300-$1,200 repair), Excessive Oil Consumption & AFM Lifter Failure (5.3L V8) ($1,500-$4,500 repair), 4L60E Transmission 3-4 Clutch Failure / Slipping ($1,500-$3,500 repair) and Unwanted Low-Speed ABS Activation (Corrosion) - Recall 05V379 ($150-$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 $20 to $4,500. DIY maintenance guides at au7o.io.

All 13 Known Issues

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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)
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UpgradePremium oil filter ensures proper filtration with high-mileage engines (Wix Oil Filter)
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Typical repair cost:$300 - $4,000

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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

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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)
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UpgradeReplacement throttle body for units with failed motors or sensors (Dorman Throttle Body Assembly)
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Typical repair cost:$100 - $500

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High Confidence310 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2002-2003 Chevrolet Avalanche, early Avalanches (1999-2003 GMT800 generation) are subject to steel brake line corrosion, especially in road-salt regions where flaking/scaling pipes can rupture and cause sudden loss of brake pressure. NHTSA investigated roughly 6 million 1999-2003 GM full-size trucks/SUVs including the Avalanche but closed the probe with no defect finding and no recall, instead advising owners to wash the undercarriage.

Common Symptoms

Soft or sinking brake pedal
Brake fluid leak under vehicle
Low brake fluid warning
Visible rust/flaking on brake lines
Loss of braking

How to Fix

Inspect brake lines for scaling/flaking; replace corroded sections or the full set with coated/stainless lines. Preventively, regularly wash the undercarriage in winter. Severe cases require full line-set replacement.

Typical repair cost:$300 - $1,200

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High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

On the 2003-2006 Chevrolet Avalanche, corrosion of the front wheel-bearing hub can contaminate/affect the ABS tone ring and wheel speed sensor, causing unwanted ABS activation when braking at low speeds (roughly 3-10 mph). This extends low-speed stopping distance and pulses the pedal unexpectedly. GM issued recall 05V379000 (Aug 2005, ~1.35M vehicles) but limited the remedy largely to salt-belt states, frustrating owners elsewhere who report the same symptom.

This issue also affects: Chrysler 300, Ford Transit Connect, GMC Sierra 1500

Common Symptoms

ABS engages at low speed when stopping
Extended low-speed stopping distance
Unexpected brake pedal pulsation
ABS warning light

How to Fix

Per the recall, dealers inspect/replace affected front wheel speed sensors / hub bearing assemblies. Out-of-recall vehicles are fixed by replacing the corroded front hub bearing assembly (which contains the wheel speed sensor) and cleaning/replacing the tone ring.

Typical repair cost:$150 - $500

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Low ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

Community Reported

220 owners

On the 2002-2006 Chevrolet Avalanche, first-generation Avalanches (2002-2006) can experience unwanted ABS activation during normal low-speed braking. The antilock brake system activates inappropriately, causing a pulsating brake pedal and increased stopping distances when it should not be engaging. The issue is more likely in environmentally corrosive areas where road salt deteriorates the ABS wheel speed sensor wiring and tone rings. This creates a safety hazard as the vehicle takes longer to stop than expected during routine braking.

This issue also affects: Chrysler 300, Ford Transit Connect, GMC Sierra 1500

Common Symptoms

ABS activates during normal low-speed braking
Pulsating brake pedal when it should not be pulsating
Increased stopping distances during routine stops
ABS warning light illuminated on dashboard
Grinding or buzzing noise from brakes during normal stops

How to Fix

Inspect and clean all four ABS wheel speed sensors and tone rings. Replace corroded sensor wiring or connectors. If the ABS module itself is faulty, replacement costs $600-$1,200. Applying dielectric grease to sensor connectors during brake service can prevent corrosion. In some cases, ABS module reprogramming at the dealer resolves the issue.

What Owners Are Using

Parts and tips from 220+ owners who fixed this issue

TipClean the ABS wheel speed sensors and tone rings during every brake job. Corrosion on these components is the most common cause of unwanted ABS activation. Apply dielectric grease to all sensor connectors to prevent future corrosion. This is a $20 preventive measure that can save $1,000+ in ABS module replacement
UpgradeABS wheel speed sensor to restore anti-lock brake and stability control function (Bosch ABS Wheel Speed Sensor)
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UpgradeABS sensor replacement — aftermarket alternative with OE fitment (Dorman ABS Speed Sensor)
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Typical repair cost:$100 - $1,200

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High Confidence220 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

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Community Reported

400 owners

On the 2002-2006 Chevrolet Avalanche, the first-generation Avalanche (2002-2006) features distinctive gray plastic body cladding that is prone to fading, cracking, and clip failure. The unpainted plastic panels that encircle the body deteriorate from UV exposure, turning chalky white and developing cracks. The clips holding the cladding in place become brittle and break, causing panels to loosen or detach. The cladding issues are cosmetic but affect vehicle appearance and can expose underlying metal to corrosion.

Common Symptoms

Gray plastic cladding turning white or chalky
Cracks forming in cladding panels
Cladding panels loose or rattling
Missing cladding clips causing gaps
Underlying metal visible where cladding has pulled away

How to Fix

Restore faded cladding with dedicated plastic restorer products (Solution Finish, Cerakote Trim Coat). Replace broken clips with new GM clips or aftermarket equivalents. For severely damaged cladding, replacement panels are available from aftermarket suppliers. Some owners choose to paint the cladding to match the body color for a permanent solution ($500-$1,500 for professional paint).

What Owners Are Using

Parts and tips from 400+ owners who fixed this issue

TipSolution Finish or Cerakote Trim Coat are the best products for restoring faded Avalanche cladding. Apply every 6-12 months to maintain appearance. For a permanent fix, many owners paint the cladding to body color - this eliminates the fading issue entirely and modernizes the look
UpgradePOR-15 rust preventive coating stops rust permanently (POR-15 Rust Preventive Coating)
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UpgradeRust-Oleum rust converter spray for treating corroded panels (Rust-Oleum Rust Converter Spray)
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UpgradeDupli-Color touch-up paint kit for scratch and chip repair (Dupli-Color Touch-Up Paint Kit)
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UpgradeDupli-Color clear coat finish for paint protection (Dupli-Color Clear Coat Spray)
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Typical repair cost:$20 - $1,500

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High Confidence400 reportsLast reported by owners Mar 2026Reviewed Mar 2026

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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)
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UpgradeBondo body filler for dent and panel repair (Bondo Body Filler Kit)
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Typical repair cost:$50 - $2,500

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High Confidence350 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2003-2006 Chevrolet Avalanche, first-generation (GMT800) Avalanches share the GM truck instrument cluster that suffers stepper-motor failure, causing gauges (speedometer, tach, fuel, temp, oil, voltage) to stick, read inaccurately, flutter, or go dead. The defect was widespread enough that GM agreed to a 2008 class action special-coverage settlement covering 2003-2005 GM trucks/SUVs including the Avalanche, extending coverage to 7 years/70,000 miles.

Common Symptoms

Speedometer reads wrong or sticks
Fuel/temp gauge dead or erratic
Needles flutter
Multiple gauges fail together
Dim or dead gauge backlighting

How to Fix

Replace the stepper motors and rebuild the cluster (DIY or specialist board-repair service), or replace the cluster. Vehicles within the settlement window (7 yr/70k mi) could get free replacement; out-of-coverage owners typically use an aftermarket cluster-repair service for far less than a new cluster.

Typical repair cost:$120 - $400

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On the 2002-2006 Chevrolet Avalanche, the plastic HVAC temperature (blend) and air-delivery (mode) door actuators fail commonly on GMT800 Avalanches. Internal plastic gears strip or position sensors wear out, producing a repetitive clicking/ticking behind the dash and loss of temperature or vent control. On dual-zone systems one side may blow hot while the other blows cold regardless of setting.

Common Symptoms

Repetitive clicking/ticking behind dash
No change in temperature with knob
One side hot, other cold (dual zone)
Air comes from wrong vents
Stuck on defrost or floor

How to Fix

Replace the failed actuator (driver-side temp actuator is easy to reach; passenger/mode actuators may require glove box or partial dash removal). After replacement the system may need to recalibrate (pull HVAC fuse or battery briefly).

Typical repair cost:$100 - $350

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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

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On the 2002-2006 Chevrolet Avalanche, the in-tank fuel level sending unit on GMT800 Avalanches wears out, producing erratic readings: the gauge sticks on full or empty, drops suddenly, or reads inaccurately. The cause is wear/contamination of the resistive card the sender wiper rides on, leading to intermittent contact (sulfur in fuel accelerates it). On dual-tank 8.1L trucks the problem can affect tank selection/readout as well.

Common Symptoms

Fuel gauge stuck on full or empty
Gauge drops suddenly while driving
Inaccurate fuel readings
Needle jumps around

How to Fix

Replace the fuel level sensor; because it is integrated into the in-tank fuel pump module, most shops replace the complete pump/sender module (requires dropping the tank or removing the bed). Cleaning contacts is a temporary fix at best.

Typical repair cost:$250 - $600

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Frequently Asked Questions

What are the most common Chevrolet Avalanche problems?

According to Au7o's analysis of 1,860+ owner reports, the 2002-2013 Chevrolet Avalanche has 13 documented issues. The most frequently reported are: 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure, Brake Line Corrosion (Salt-Belt Vehicles), Excessive Oil Consumption & AFM Lifter Failure (5.3L V8). Of these, 5 are rated critical and should be addressed promptly.

Is the Chevrolet Avalanche reliable?

The 2002-2013 Chevrolet Avalanche has 13 known issues documented across 1,860+ owner reports. 5 issues are rated critical: 5.3L Vortec AFM Active Fuel Management Oil Consumption and Lifter Failure and Brake Line Corrosion (Salt-Belt Vehicles) and Excessive Oil Consumption & AFM Lifter Failure (5.3L V8) and 4L60E Transmission 3-4 Clutch Failure / Slipping and Unwanted Low-Speed ABS Activation (Corrosion) - Recall 05V379. 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 $20 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 year Chevrolet Avalanche is the most reliable?

Reliability varies across model years of the Chevrolet Avalanche. 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 2002-2013 Chevrolet Avalanche with 13 documented issues documented across 1,860+ owner reports.

All 13 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

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

Common Symptoms

How to Fix

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

Common Symptoms

How to Fix

What Owners Are Using

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2002-2003 Chevrolet Avalanche: Brake Line Corrosion (Salt-Belt Vehicles)#

Common Symptoms

How to Fix

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2003-2006 Chevrolet Avalanche: Unwanted Low-Speed ABS Activation (Corrosion) - Recall 05V379#

Common Symptoms

How to Fix

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2002-2006 Chevrolet Avalanche: Unwanted ABS Activation Increasing Stopping Distance#

Common Symptoms

How to Fix

What Owners Are Using

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

Common Symptoms

How to Fix

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2002-2006 Chevrolet Avalanche: Body Cladding Fading, Cracking, and Clip Failure#

Common Symptoms

How to Fix

What Owners Are Using

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

Common Symptoms

How to Fix

What Owners Are Using

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2003-2006 Chevrolet Avalanche: Instrument Cluster Gauge / Speedometer Failure (Stepper Motors)#

Common Symptoms

How to Fix

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2002-2006 Chevrolet Avalanche: HVAC Blend Door / Mode Actuator Failure#

Common Symptoms

How to Fix

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

Common Symptoms

How to Fix

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2002-2006 Chevrolet Avalanche: Erratic Fuel Gauge / Fuel Level Sensor Failure#

Common Symptoms

How to Fix

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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 year Chevrolet Avalanche is the most reliable?

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

What is the 2002-2003 Chevrolet Avalanche Brake Line Corrosion (Salt-Belt Vehicles)?

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 2003-2006 Chevrolet Avalanche Unwanted Low-Speed ABS Activation (Corrosion) - Recall 05V379?

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

What is the 2002-2006 Chevrolet Avalanche Unwanted ABS Activation Increasing Stopping Distance?

What is the 2003-2006 Chevrolet Avalanche Instrument Cluster Gauge / Speedometer Failure (Stepper Motors)?

What is the 2002-2006 Chevrolet Avalanche Body Cladding Fading, Cracking, and Clip Failure?

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

What is the 2002-2006 Chevrolet Avalanche HVAC Blend Door / Mode Actuator Failure?

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

What is the 2002-2006 Chevrolet Avalanche Erratic Fuel Gauge / Fuel Level Sensor Failure?