2003 Chevrolet Avalanche 1500 Vehicle speed control Problems
- Complaints
- 11about this part
- Share
- 6%of 182 total for the year
- Median mileage
- 101,300miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the vehicle speed control of the 2003 Chevrolet Avalanche 1500, 6% of the 182 complaints for this model year. Where a mileage was given, the median is 101,300 miles. 1 of these say a crash was involved, according to the filers.
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.
“I believe the same problem with the GM key/ignition switch is more common then what is being reported. The avalanche 2003 has had the same loose ignition switch for years. Our key system has to be jiggled and forced to the start position 80 percent of the time. The ignition switch will also move the off position while the vehicle is moving and the key will fall out.”
NHTSA complaint #10568754, filed 2014-03, 93,000 miles“The vehicle was stopped at a 2-way stop. Upon turning right, my foot went from the brake to the gas pedal and got hooked on a piece of metal extending from the arm of the accelerator. This caused my foot to be trapped below the brake pedal but attached to the gas pedal. The vehicle spun back and forth while trying to get my foot off the accelerator. I hit a truck coming from the opposite direction from which I was turning pinning it to the guard rail. …”
NHTSA complaint #10503759, filed 2013-03, 114,916 miles“Last year in my 2003 avalanche I was cruising on an interstate highway and I noticed my speedometer start to move backwards until it read about 25 MPH, however, I wasn't slowing down. It was very concerning to me, so I first pulled over to look under the hood, but I found nothing. Currently the speedo does not operate at all, but I went through a few months where it would start to work partially after about an hour of driving. This is unacceptable that so many people are experiencing the exact same problem. …”
NHTSA complaint #10248693, filed 2008-11, 106,000 miles“Key ignition switch is loose and car will shut off while operating, key can be pulled out of ignition while running. If vehicle shuts off while operating then you loose control of brakes, steering, and electrical systems. Gm is denying there is a problem. My vehicle is proof that the problem exists and the chevy avalanche 2003 has a problem.”
NHTSA complaint #10575443, filed 2014-03, 78,000 miles“Engine light and reduce engine power and start loosing speed. After turned off for a few minutes work fine. This year in an hour ride have to stop at least 20 times. Computer codes stated need to change throttle body. Last week I change it and again the same problem.”
NHTSA complaint #10617683, filed 2014-07, 101,300 milesVehicle speed control: other model years
Other parts of the 2003 Chevrolet Avalanche 1500
84 complaintsBrakes
53 complaintsAir bags
12 complaintsSteering
9 complaintsBody and structure
8 complaintsOther or unknown
7 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsFuel system
4 complaintsSuspension
4 complaintsTransmission and drivetrain
4 complaintsEngine
3 complaintsTires
3 complaints
← All problems reported for the 2003 Chevrolet Avalanche 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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