The 2009 Tahoe Hybrid pairs GM's 6.0L Vortec with a two-mode hybrid transmission—a complex electro-mechanical unit that delivers fuel savings but brings costly failure risks, particularly around the transmission oil cooling system and hybrid-specific components. Engine longevity is decent if maintained, but Active Fuel Management (AFM) issues plague this generation.
Two-Mode Hybrid Transmission Failure
Occasional · high severity
Typical onset: 100,000-150,000 mi
Symptoms: Check Engine light with P0700 or hybrid-system DTCs, Loss of regenerative braking or electric-motor assist, Transmission slipping, hard shifts, or refusing to move, Whining or grinding noise from trans case
Fix: Complete hybrid transmission replacement or rebuild required; no quick fixes due to integrated electric motors and planetary gearsets. Expect 12-16 labor hours for R&R, plus core charge. Used units are scarce and risky; remanufactured is the safer bet.
Estimated cost: $5,500-8,500
Transmission Oil Cooler and Line Leaks
Common · medium severity
Typical onset: 80,000-120,000 mi
Symptoms: ATF puddles under vehicle, typically passenger side, Low transmission fluid warnings or erratic shifting, Transmission overheating during towing or summer driving, Pink or red fluid visible along cooler lines or radiator
Fix: Replace external oil cooler, cooler lines, and fittings. Hybrid trans runs hotter than conventional units, accelerating line degradation. Flush system and verify no internal contamination. 3-5 labor hours.
Estimated cost: $600-1,200
AFM (Active Fuel Management) Lifter and Cam Failure
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Loud ticking or tapping from engine, especially on cold start, Check Engine light with P0300-series misfire codes or P0521 oil pressure, Rough idle, loss of power, or cylinder deactivation, Metal shavings in oil during changes
Fix: AFM lifters collapse due to oil pressure issues or sludge buildup, wiping cam lobes. Full repair requires heads-off, camshaft replacement, all lifters, and often valley cover/pressure relief valve. Consider AFM-delete kit during repair. 18-24 labor hours for complete job.
Estimated cost: $3,500-6,000
Hybrid Battery Pack Degradation
Occasional · high severity
Typical onset: 120,000-180,000 mi
Symptoms: Reduced fuel economy, loss of 2-4 mpg from new, Battery warning light or hybrid system fault codes, Inability to operate in electric-only mode at low speeds, Frequent engine cycling, won't stay off at stops
Fix: NiMH battery pack replacement required; located under second-row seats. GM dealer-only part, no aftermarket equivalent yet. 6-8 labor hours for removal, testing, and installation. Some specialty shops offer cell-level rebuilds at lower cost.
Estimated cost: $4,000-7,000
Transmission Mount Failure
Common · low severity
Typical onset: 70,000-110,000 mi
Symptoms: Clunking when shifting into drive or reverse, Vibration at idle, especially with A/C on, Visible sagging or torn rubber on mount inspection, Excessive drivetrain movement during acceleration
Fix: Hybrid transmission is heavier than conventional; mounts wear faster. Replace front and rear trans mounts as a pair. 2-3 labor hours.
Estimated cost: $400-700
Piston Ring Failure and Oil Consumption
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Excessive oil consumption, 1 quart per 1,000 miles or worse, Blue smoke from exhaust on startup or acceleration, Fouled spark plugs, misfires on one or more cylinders, Low compression readings on affected cylinders
Fix: Rings stick or lose tension due to carbon buildup, common on AFM engines with extended oil change intervals. Requires engine disassembly, re-ring all pistons, hone cylinders, new bearings. If cylinder wear is excessive, short block replacement needed. 20-28 labor hours depending on scope.
Estimated cost: $3,000-5,500
Owner tips
Change transmission fluid every 50,000 miles with Dexron VI—hybrid trans generates more heat than conventional
Use quality synthetic oil and keep intervals at 5,000 miles max to combat AFM lifter failures and carbon buildup
Monitor hybrid battery state-of-health via Tech 2 or equivalent scanner annually after 100K miles
Avoid prolonged idling or heavy towing without transmission temp gauge monitoring; install aftermarket gauge if towing regularly
Buy only if under 80,000 miles with documented fluid changes and AFM system still healthy—repair costs can exceed vehicle value quickly, and hybrid complexity makes DIY difficult.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 21V050000
2021-02-05 · EA15001
General Motors, LLC (GM) is recalling certain 2007-2011 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL, and 2009-2011 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500 and Sierra 3500 vehicles originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, GM is recalling certain 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 22, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on March 1, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328760.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 21V052000
2021-02-05 · EA15001
General Motors, LLC (GM) is recalling certain 2009 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500, Sierra 3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
Additionally, GM is recalling certain 2007-2008 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 23, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on September 20, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020, Cadillac customer service at 1-800-458-8006, and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328780.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 21V053000
2021-02-05 · EA15001
General Motors, LLC (GM) is recalling certain 2013 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, GM is recalling certain 2010 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL vehicles originally sold, or ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
Additionally, GM is recalling certain 2009 Cadillac Escalade, Escalade ESV, and Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 24, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on May 11, 2021. Owners may contact Cadillac customer service at 1-800-458-8006; Chevrolet customer service at 1-800-222-1020; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328790.
ELECTRICAL SYSTEM · 10V240000
2010-06-04
GM IS RECALLING CERTAIN MODEL YEAR 2006-2009 BUICK, LUCERNE; CADILLAC DTS; HUMMER H2; MODEL YEAR 2008-2009 BUICK ENCLAVE; CADILLAC CTS; MODEL YEAR 2007-2009 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE; GMC ACADIA, SIERRA, YUKON, YUKON XL; SATURN OUTLOOK; AND MODEL YEAR 2009 CHEVROLET TRAVERSE VEHICLES EQUIPPED WITH A HEATED WASHER FLUID SYSTEM (HWFS). A RECALL WAS IMPLEMENTED IN 2008 TO ADD A FUSE TO THE CONTROL CIRCUIT HARNESS TO ADDRESS THE POTENTIAL CONSEQUENCES OF A PRINTED CIRCUIT BOARD (PCB) ELECTRICAL SHORT. HOWEVER, THERE HAVE BEEN NEW REPORTS OF THERMAL INCIDENTS ON HWFS MODULES AFTER THIS IMPROVEMENT WAS INSTALLED. THESE INCIDENTS RESULTED FROM A NEW FAILURE MODE ATTRIBUTED TO THE DEVICE'S THERMAL PROTECTION FEATURE. THE SIGNIFICANCE VARIES FROM MINOR DISTORTION TO CONSIDERABLE MELTING OF THE PLASTIC AROUND THE HWFS FLUID CHAMBER.
Consequence: IT IS POSSIBLE FOR THE HEATED WASHER MODULE TO IGNITE AND A FIRE MAY OCCUR.
Remedy: DEALERS WILL PERMANENTLY DISABLE AND REMOVE THE HEATED WASHER FLUID MODULE. AN UPDATED PAGE FOR THE OWNER MANUAL WILL BE PROVIDED AND INSERTED IN THE OWNER MANUAL TO DOCUMENT THAT THE FEATURE HAS BEEN PERMANENTLY DISABLED AND REMOVED FROM THE VEHICLE. THE SAFETY RECALL BEGAN ON JUNE 11, 2010. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, SATURN AT 1-800-972-8876, GMC AT 1-866-996-9463 AND HUMMER AT 1-800-732-5493 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
FUEL SYSTEM, GASOLINE · 09V154000
2009-05-06
GM IS RECALLING 27,188 MY 2009 CADILLAC ESCALADE, ESCALADE HYBRID, ESCALADE ESV, AND ESCALADE EXT; CHEVROLET AVALANCHE, SUBURBAN, TAHOE, TAHOE HYBRID, AND COLORADO; AND GMC YUKON, YUKON HYBRID, YUKON XL, AND CANYON VEHICLES. THE FUEL SYSTEM CONTROL MODULES MAY HAVE A CONDITION IN WHICH AN ADHESIVE SEPARATION OF THE ROOM TEMPERATURE VULCANIZING (RTV) SEAL BETWEEN THE SEAL AND THE HOUSING MAY ALLOW WATER TO SEEP INTO THE MODULE.
Consequence: WATER IN THE MODULE COULD CAUSE A SHORT OR OPEN CIRCUIT, ILLUMINATION OF THE SERVICE ENGINE SOON LAMP, SETTING OF DIAGNOSTIC TROUBLE CODES OR THE ENGINE MAY BE HARD TO START, MAY NOT START OR MAY STALL INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSTALL A NEW FUEL SYSTEM CONTROL MODULE FREE OF CHARGE. THE RECALL BEGAN ON MAY 18, 2009. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438 AND GMC AT 1-866-996-9463 OR AT WWW.GMOWNERCENTER.COM.
Performance
Horsepower
332hp
Torque
367lb-ft
0–60 mph
8.4sec
Quarter mile
16.5sec
Top speed
100mph
Fuel economy (EPA)
City
21mpg
Highway
22mpg
Combined
21mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
6,200lb
Payload
1,490lb
Curb weight
5,830lb
EPA class
Sport Utility Vehicle - 2WD
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2009 Chevrolet Tahoe Hybrid 6.0L V8 Hybrid and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.