2008 Chevrolet Avalanche 1500 Engine Problems
- Complaints
- 2about this part
- Share
- 5%of 37 total for the year
- Median mileage
- 43,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2008 Chevrolet Avalanche 1500, 5% of the 37 complaints for this model year. Where a mileage was given, the median is 43,000 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.
“Excessive oil consumption. It the 5.3l with active fuel management system. Gm knowns there is a problem and the only fix is to replace the rings and pistons or replace the entire engine at the owners expense, 5,000.00 - 8,000.00. Since it's it's a design flaw, I feel they should fix it at no cost. It consumes over quart and a half per 1000 miles, both highway and city and at times 2 quarts with pulling heavy loads. I have done a oil consumption test with the dealer and they have admitted it goes through a lot of oil. …”
NHTSA complaint #10864069, filed 2016-05“The contact owns a 2008 Chevrolet AVALANCHE 1500. While driving approximately 30 MPH, the check engine warning light illuminated and the vehicle stalled. The vehicle was taken to the dealer multiple times over a span of three years where it was diagnosed that the throttle position sensor and the program sensor kit needed to replaced. The contact also stated that the ls valve cover, number one plug, cylinder head, piston rings, and a deflector needed to be replaced. The vehicle was repaired and an oil consumption test was performed over a six month period. …”
NHTSA complaint #10870737, filed 2016-05, 43,000 milesRelated service bulletins
- 11012907Dec 18, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11010544Oct 7, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11009531Sep 27, 2024This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11007116Aug 6, 2024This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11007091Aug 5, 2024This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11004761Jun 28, 2024This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or…
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10099252Sep 9, 2016This preliminary information communication provides information to the technician about vehicles that have a malfunction indicator lamp on or engine misfire, rough idle, extended…
- 10082869Aug 29, 2016This informational bulletin provides additional information on how to install pistons and suggest what tools to use.
Engine: other model years
Other parts of the 2008 Chevrolet Avalanche 1500
16 complaintsElectrical system
7 complaintsOther or unknown
7 complaintsLatches, locks and linkages
4 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsBrakes
2 complaintsBody and structure
2 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2008 Chevrolet Avalanche 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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