2003 Chevrolet Trailblazer EXT Vehicle speed control Problems
- Complaints
- 7about this part
- Share
- 2%of 313 total for the year
- Median mileage
- 81,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the vehicle speed control of the 2003 Chevrolet Trailblazer EXT, 2% of the 313 complaints for this model year. Where a mileage was given, the median is 81,000 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.
“I was driving to work when all of a sudden I realize that my speed odometer wasn't working and I had to push the brakes because it felt that I was going to fast and the speed limit was 35 however my speed odometer was stuck on 10mph.... But it was probably going at about 55 MPH...”
NHTSA complaint #10423910, filed 2011-09, 268,842 miles“While driving, my speedometer stopped working completely. I have had it checked by both a GM dealer and an independent repair shop. I was told the entire cluster would have to be replaced. I was also told that there are many of these problems and that there is a 2-3 week delay in getting the part shipped. I was also told it would cost about $400 to get it fixed. My car is a 2003 and has about 81,000 miles on it. A speedometer is not like an alignment, wear and tear item, or neglect of having it serviced. …”
NHTSA complaint #10147467, filed 2006-01, 81,000 miles“2003 chevy Trailblazer Ext. Speedometer has malfunction continuously for the last 4 years. Very dangerous. Company (GM) says it is not dangerous and they do not have enough complaints. Thousands on the internet.”
NHTSA complaint #10401435, filed 2011-05, 40,000 miles“I, along with many others are experiencing major problems with the instrument panels on our Chevrolet trailblazer. My mother traded hers in because her speedometer was going out. But my problem is much worse, my whole entire dashboard is out. My gas gauge doesn't work, my speedometer doesn't work, my oil pressure doesn't work, my thermostat doesn't work, nothing works. My cruise control acts up too.”
NHTSA complaint #10441192, filed 2011-12“I am a senior citizen I brought this car new. After one year I had to replace linc plate. Over the years everything has gone wrong with this car. Speedometer has not worked since aug. '08, gas gauge stopped oct. '11. Instrument cluster since 2010 and GM knows this is a defected part. Yet GM paid for this same defected part at their cost for the tahoe, but has not paid for the trailblazer. Why? Windows and doors do not unlock on command. Window wiper(rear) stopped working-I replaced that part. A/c comes on my itself. Thermostat failure. I think GM should stand behind their product. …”
NHTSA complaint #10439261, filed 2011-12Vehicle speed control: other model years
Other parts of the 2003 Chevrolet Trailblazer EXT
89 complaintsElectrical system
77 complaintsTransmission and drivetrain
49 complaintsVisibility (wipers, defrost, mirrors)
26 complaintsExterior lighting
23 complaintsBody and structure
20 complaintsEngine cooling
16 complaintsBrakes
13 complaintsLatches, locks and linkages
13 complaintsSuspension
12 complaintsOther or unknown
7 complaintsSteering
6 complaints
← All problems reported for the 2003 Chevrolet Trailblazer EXT
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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