Built from official NHTSA complaint and recall data · data through 07/12/2026
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
The most-reported problem — Electrical System (37.2% of complaints) — recall and investigation status for this vehicle is currently unavailable.
Electrical System complaints here are 5.2× the median for that category across the 2547 model-years tracked on this site.
| Complaint category | Reports | Official status | Reference |
|---|---|---|---|
| Electrical System | 97 · 37.2% | not available | — |
| Electrical System: Instrument Cluster/panel | 50 · 19.2% | not available | — |
| Fuel System, Gasoline | 24 · 9.2% | not available | — |
| Power Train:automatic Transmission | 11 · 4.2% | not available | — |
| Exterior Lighting | 10 · 3.8% | Recalled | Recall 04V527000 |
| Vehicle Speed Control | 9 · 3.4% | not available | — |
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 261 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
NHTSA campaign 04V527000 · 2004 · reported 11/01/2004
AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park it Park outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
“2004 CHEVROLET TRAILBLAZER SPEEDOMETER AND FUEL GAUGE ARE UNRELIABLE. SPEEDOMETER SOMETIMES SEEMS TO WORK BUT IS NO ACCURATE WHEN IT DOES SHOW A SPEED. FUEL…”NHTSA complaint 10295089 — filed 12/09/2009 · ELECTRICAL SYSTEM
“I HAVE A 2004 TRAILBLAZER I PURCHASED IN 2007 FOR MY WIFE. AFTER ABOUT A YEAR THE SPEEDOMETER IS NOT WORKING AT ALL. AFTER A…”NHTSA complaint 10294587 — filed 12/05/2009 · ELECTRICAL SYSTEM
“WE ARE THE OWNER OF A 2004 CHEVY TRAILBLAZER. I WOULD LIKE TO FILE 4 MAJOR CONCERNS REGARDING OUR VEHICLE. THE FIRST I HAVE BROUGHT…”NHTSA complaint 10292213 — filed 11/15/2009 · ELECTRICAL SYSTEM
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical system issues are the most-reported category, cited in 97 of 261 NHTSA complaints (37.2%), followed by electrical system: instrument cluster/panel (50), fuel system, gasoline (24), power train:automatic transmission (11). Complaints are unverified owner reports.
261 complaints were on file with NHTSA as of 07/12/2026. Of those, 6 involved a crash, 3 involved a fire, and 13 reported injuries. No deaths were reported.
Yes — 1 NHTSA safety recall campaign, including campaign 04V527000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Recall or investigation data is partly unavailable for this vehicle right now — check your VIN at nhtsa.gov/recalls for the authoritative answer.
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
