8.0

pretty bad
Typical Repair Cost:
$230
Average Mileage:
150,250 miles
Total Complaints:
2 complaints

Most common solutions:

  1. get coils fixed/replaced (2 reports)
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problem #2

Oct 092017

Trailblazer ST 4.2L I6

  • Automatic transmission
  • 235,500 miles

Coil failure caused misfire of two cylinders. engine idles very rough and chugs on acceleration. no power and dangerous to drive. it can mask bigger problems. Diagnostic code reader helps to pinpoint the issue, and easy to replace.

- Jim R., Bristow, US

problem #1

Oct 082008

Trailblazer

  • Automatic transmission
  • 65,000 miles

Well - poor idling left me worried - which led to the check engine light coming on which made me worried which left me getting it diagnosed which made me worried which led to them finding a bad coil which solved the problem - for about 6 months when another one went or was starting to go - I ditched the piece and traded it in for a vehicle with a great full warranty... crap really... if you have to replace one replace them all but i'll tell ya - they aren't cheap. Chevy really let me down. Misfiring and down a cyl. also your check engine light will start blinking

- ivebeenthere, Beverly Hills, CA, US