2004 Chevrolet Trailblazer EXT Electrical system Problems
- Complaints
- 145about this part
- Share
- 56%of 261 total for the year
- Median mileage
- 62,790miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 145 complaints about the electrical system of the 2004 Chevrolet Trailblazer EXT, 56% of the 261 complaints for this model year. Where a mileage was given, the median is 62,790 miles. 1 of these say a crash was involved and 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2004 chevy trailblazer dash cluster. I have 43,000 miles on my vehicle and the dash gauges went out. They started to work after about 10 minutes of driving and now they come on only about 1 out of 4 trips. I searched the internet and found a lot of owners complaining about the same problem. Why is this not a recall? Please help if you can.”
NHTSA complaint #10402787, filed 2011-05, 41,000 miles“Speedometer was reading 90mph on a trip and cars were passing me, when I stopped the speedometer read 35mph standing still. It did this for about 3 days, then went back to normal. The other day coming home from a trip it seemed like it was acting up again, but my husband was driving, he thought it was acting up too. It is back to normal, haven't done anything about it.”
NHTSA complaint #10393751, filed 2011-03, 90,000 miles“Battery gauge failed about 6 months ago and I didn't think much of it but now the gas gauge, oil gauge and fuel gauge are failing and according to everything I have read the speedometer is next. My dome lights haven't worked right in over a year but that didn't bother me. The gauges all failing are a safety factor. It occurs everytime I start the SUV - I do not have the money to repair it.”
NHTSA complaint #10298244, filed 2010-01, 75,000 miles“2004 chevy trailblazer v8 ext speedometer acting funny complete stopped shoes going 30. It reads faster than I drive so I have to figure out the stopped speed to figure out how much fast I am driving. Internet has many complaints about the same issue and similar ones like tahoe has been recalled.”
NHTSA complaint #10255548, filed 2009-01, 64,000 miles“Several times that I've been driving the trailblazer, the speedometer goes crazy and says that we are traveling at a much higher rate of speed than we are. Like if im going approx 70mph, it states we are going about 110mph! This is definitely a safety issue! And it has never been a recall?”
NHTSA complaint #10254346, filed 2009-01, 42,000 milesRelated service bulletins
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- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 10189005Dec 7, 2020This SKU is a Climate Control Module. The customer communication requested return of unsold inventory to inspect for a software issue. If the software issue exists it can cause a…
- 10168969Nov 20, 2019This Preliminary information communicates information for setting up the SDM.
- 10190320Oct 1, 2017IPC Odometer Programming Method Quick Reference Guide
- 10081022Jun 14, 2016This preliminary information communication advises the technician that ,when testing any circuit for open or resistance, it is imperative that all related terminal pin fit and…
- 10083898Apr 27, 2016This preliminary information communication advises the technician if unable to place an onstar call in the ignition on mode after the onstar canada upgrade, to contact the gm…
Electrical system: other model years
Other parts of the 2004 Chevrolet Trailblazer EXT
46 complaintsTransmission and drivetrain
17 complaintsEngine cooling
16 complaintsExterior lighting
13 complaintsEquipment
9 complaintsVehicle speed control
9 complaintsSteering
8 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsAir bags
7 complaintsBody and structure
7 complaintsEngine
5 complaintsLatches, locks and linkages
3 complaints
← All problems reported for the 2004 Chevrolet Trailblazer EXT
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