Automatic Transmission Problems of Chevrolet Avalanche

Chevrolet Avalanche owners have reported 16 problems related to automatic transmission (under the power train category). The most recently reported issues are listed below.

car image   Automatic Transmission problem of the 2007 Chevrolet Avalanche 1
Failure Date: 10/19/2010

The contact owns 2007 Chevrolet Avalanche. The contact stated that the vehicle started rolling backwards while it was in park. The vehicle was not parked on a hill. The contact took the vehicle to the dealer who stated that there was a related technical service bulletin stating that some vehicles may rock or move forward while in the park position. The dealer also stated that the failure was caused by the transmission fluid releasing from the clutch pad which was normal. The contact stated this was not normal and could have caused the vehicle to crash into the garage. The dealer stated that there was nothing to repair. The failure mileage was 64,400. Updated 02/01/lj updated 03/22/11.

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car image   Automatic Transmission problem of the 2005 Chevrolet Avalanche 2
Failure Date: 09/24/2009

At highway speed, service 4 wd light came on, stated vehicle lost speed/power and the 4 wd selector shifted on its own into 4 wd hi. . . . . Very dangerous situation. . . To lose speed and power in highway traffic.

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car image   Automatic Transmission problem of the 2004 Chevrolet Avalanche 3
Failure Date: 05/25/2009

While driving on freeway vehicle was revving up, immediately exited freeway and found transmission was gone, vehicle would not go in reverse, did drive in neutral. Vehicle has only 30k miles. Took vehicle to transmission mechanic stated the chevy Avalanche and denali are known for this, and feels this is a factory defect. His vehicle too went out at 20k miles. My cousin transmission too went out at 50k miles, would like to have dealer repair my vehicle. How many more vehicles does the NHTSA need to complain about so the matter can be corrected by the dealer(s) or manufacture.

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car image   Automatic Transmission problem of the 2005 Chevrolet Avalanche 4
Failure Date: 05/25/2008

I bought a 2005 chevy Avalanche. 3 year 36,000 mile warranty, at 40,000 miles the transmission disintegrated. $3,000 out of pocket. . . . . . . . I expect a little more than 40,000 miles out of a $35,000 truck. Now I'm getting mail about a speedometer lawsuit, I've always been a chevy guy but if this is what I can expect from gm maybe its time for a change!.

car image   Automatic Transmission problem of the 2005 Chevrolet Avalanche 5
Failure Date: 01/22/2008

Car started jerking as if it was going to cut off then once I got on the highway it would not go over 50 miles per hour. Took car to the dealership, and later found out that transmission was gone.

car image   Automatic Transmission problem of the 2007 Chevrolet Avalanche 6
Failure Date: 09/01/2007

While driving on the highway about 70-75 miles a hour, passing another vehicle, the passing gear engaged, then there was a loss of power to the vehicle. Once the truck got under 40 mph you have no drive gear only 1,2, or 3rd gear will get you moving. Vehicle lost 4th gear.

car image   Automatic Transmission problem of the 2004 Chevrolet Avalanche 7
Failure Date: 08/23/2007

While driving on highway truck transmission started not shifting and at 55mph was running 4500 rpm, truck system then warned of a hot transmission. Brough to dealer told transmission is no good, under extended warranty can only get a rebuilt transmission if approved by gm.

car image   Automatic Transmission problem of the 2004 Chevrolet Avalanche 8
Failure Date: 05/20/2007

Transmission or other electrical device failed allowing my 2004 Chevrolet Avalanche to roll backwards into a lake.

car image   Automatic Transmission problem of the 2004 Chevrolet Avalanche 9
Failure Date: 06/29/2006

Popping, binding noise and vibration in drivetrain.

car image   Automatic Transmission problem of the 2004 Chevrolet Avalanche 10
Failure Date: 03/12/2006

My husband, my two children and I were all in our 2004 Chevrolet Avalanche k1500, headed to church on Sunday morning, going down the street we live on. My husband, who was driving, turned on the cross street. All of a sudden, every one heard a big clunk, like some thing had dropped. The car would not move forward. My husband drove our vehicle backwards all the way home. It was parked for a few weeks, while we contacted aaa, the manufacturer, and local chevy dealerships to find out about repair and warranties. We believe this is a failure of the transmission. This vehicle has about 39000 miles, just over the written warranty, which is 36000. The manufacturer has not yet offered to pay for the repairs but advised us to take it in to the chevy dealership to confirm the diagnostics. The vehicle is currently be tested by a Chevrolet dealership in redding, CA. The dealership has contacted the manufacturer to find out what they will do to repair the confirmed "transmission" problem. This is an expensive repair that has resulted in our loss of use of a vehicle that was within its normal expected use and represents a substantial financial burden. I have also contact the federal trade commission. I was please to know that the vehicle may still be within its implied warranty (first four years) and the right to revoke purchase may be an option if the manufacturer and dealership refuse to correct the problem at no cost to us. I am concerned that the problem, however, may be more widespread, and felt I should report this defect of the Chevrolet Avalanche 2004 k1500, for further investigation in case other owners have the same issue.

car image   Automatic Transmission problem of the 2006 Chevrolet Avalanche 11
Failure Date: 02/10/2006

Driving home last night, I lost 3rd and 4th gears in my transmission under normal acceleration. I have an '06 Chevrolet Avalanche z71 with less than 89,600 miles on it. I have never towed anything except for a uhaul trailer once for about 250 miles. I was on the highway when this happened, traveling 50-55 mph when it occurred. I was able to coast to a stop on the shoulder of the highway without further incident, however I was almost rearended by following traffic the moment it happened because of the sudden decrease of speed without warning. The transmission gave no warning before it broke. I still had 1st and 2nd gears as well as reverse. I have spoken with a mechanic and he estimates repair costs to be around $3000. I have checked several forums for people who have experienced similar problems and have found that this is a "common" problem happening to Avalanches that are 2-6 years old and having as few as 14,000 miles on them. My truck is out of warranty, but this is a pervasive problem that has existed since 2002 according to other Avalanche owners. The forums I found the information on are; chevyavalanchefanclub. Com, avowners. Com, and chevyavalanche. Com. This is more than an isolated incident, having happened to many people who own Avalanche's as evidenced on the forums. This defect is known by gm as evidenced by there own technical service bulletin number "08-07-30-027 June 08 â â â a/t - no movement in drive or 3rd gear". It is a flawed design or flawed parts are being used. Gm should recall all affected trucks with this particular transmission and take corrective action before someone is fatally injured due to a failure on a congested highway. An investigative look at gm's repair records to see how many trucks have been in for repairs, that have experienced the same or similar failures, would probably warrant a federal investigation into the safety of this product, and whether gm should be compelled to institute a recall.

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car image   Automatic Transmission problem of the 2002 Chevrolet Avalanche 12
Failure Date: 01/26/2006

The contact owns a 2002 Chevrolet Avalanche 1500. The contact stated that the vehicle would not accelerate properly when the accelerator pedal was depressed. While driving 45 mph, the vehicle stalled without warning. He took the vehicle to the dealer and they stated that the entire transmission needed to be replaced at the cost of $2,000. The contact replaced the vehicle. The failure mileage was 83,000 and current mileage was 167,000.

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car image   Automatic Transmission problem of the 2003 Chevrolet Avalanche 13
Failure Date: 09/09/2004

2003 Chevrolet Avalanche with harsh and suden unexpected down shifts. Dealer has attemped repair several times without repairing the problem. When slowing in traffic or for a turn the transmission will downshift hard and clunk and bang as if something is going to break. This in my opinion is a safety hazard on slippery roads while making a turn as it could cause a spinout. Last call from dealer the service manager read to me a TSB from Chevrolet saying this was a normal condition and not to attempt a repair. Not acceptable. I have been an auto tech for 38 years. I feel the transmission is shifting into 1st gear instead of 2nd when speed drops just below 20mph. This just may be a shift program problem, but what damage is being done to transmission over long term?.

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car image   Automatic Transmission problem of the 2002 Chevrolet Avalanche 14
Failure Date: 05/26/2004

While driving 40 mph transmission went into reverse. Consumer was able to pull the vehicle off the road. Consumer took the vehicle to the dealer for inspection.

car image   Automatic Transmission problem of the 2003 Chevrolet Avalanche 15
Failure Date: 02/15/2004

The truck continued to shake when depressing the gas pedal. Turns out the transmission was messed up. The dealer found lots of metal in the pan. Rebuit the broken parts @ 15,000 miles not a new one just rebuilt.

car image   Automatic Transmission problem of the 2002 Chevrolet Avalanche 16
Failure Date: 12/14/2002

Transmission/driveline failure.


Other Common Power Train related problems of Chevrolet Avalanche


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