2005 Chevrolet Avalanche Engine cooling Problems
- Complaints
- 5about this part
- Share
- 7%of 71 total for the year
- Median mileage
- 25,840miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine cooling of the 2005 Chevrolet Avalanche, 7% of the 71 complaints for this model year. Where a mileage was given, the median is 25,840 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Right after the warranty expired the transmission went and I had to rebuild it. At the shop the techs told me it was due to cooling, and they installed a small cooler because they said the cooling was not sufficient.”
NHTSA complaint #10658896, filed 2014-11, 37,000 miles“On 3/15/05 the new gto oil pump failed. Returned to dealer on 3/16/05. On 4/07/05 the car was returned to us and we were told it was perfect!the next day 4/08/05 the car was returned to the dealer. The car was repaired that day, and we were told it was now fixed!!! Two [2] days later on 4/11/05 the car was again returned to the dealer. The car is still at the dealer, it is not fixed, it is a piece of used and repaired , broken car. We paid for a new 4oo hp gto, and now after all this agony have had to pay an attorney $4000.00 to get this mess taken care of. …”
NHTSA complaint #10122370, filed 2005-05, 1,500 miles“Vibration in the engine at 50-58 MPH, found water in in transmission. Replaced torque converter and reconditioned transmission. Still experiencing leaks at 57k, fluid was replaced and flushed and minor slipping in first gear.”
NHTSA complaint #10443879, filed 2012-01, 14,680 miles“I have a 2005 Chevrolet Avalanche that the driver side blows hot and the passenger blows cold sporadically. I have read that many people have had this same exact problem. I have only owned the vehicle a few months at it has happened approximately 4 times already. I will have to replace one of the actuators to repair. This should be a recall as it is a widespread problem.”
NHTSA complaint #10348950, filed 2010-08“The contact owns a 2005 Chevrolet Avalanche which was purchased on december 31, 2007. She stated that the heater on the vehicle failed. A certified mechanic found that coolant was being utilized but could not determine where. Upon further investigation, her mechanic found coolant and several cracks in the head gasket. There were no recalls for the failure. The failure and current mileages were under 58,290.”
NHTSA complaint #10298362, filed 2010-01, 58,290 milesRelated service bulletins
- 10115143Nov 30, 2015This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with…
- 10113792Aug 4, 2015This informational bulletin provides information to technicians regarding intake manifold inspection/replacement after severe internal engine damage.
- 10113703Jun 23, 2015This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL)…
- 10112116Jul 17, 2014This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible…
- 10112069May 14, 2014This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction…
- 10113502Aug 26, 2013This warranty administration bulletin provide policy information on a revised customer concern not duplicated/verified labor operation numbers and how to submit CCND.
- 10113059Jun 24, 2013This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction…
- 10036464May 1, 2011Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. Upon inspection, obvious oil will be found in the…
- 10037933Jan 1, 2011Gm: the service engine soon light is on, there is also a misfire or engine noise. There are multiple possible causes.
- 10017246Oct 29, 2005Intermittent stall, low power, and hard restart when the vehicle is used during high ambient temperatures and in high altitudes.
Engine cooling: other model years
Other parts of the 2005 Chevrolet Avalanche
21 complaintsAir bags
11 complaintsFuel system
9 complaintsTransmission and drivetrain
9 complaintsBrakes
5 complaintsSteering
4 complaintsEngine
3 complaintsOther or unknown
3 complaintsBody and structure
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsExterior lighting
2 complaintsSeat belts
2 complaints
← All problems reported for the 2005 Chevrolet Avalanche
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology