Engine Light On


pretty bad
Typical Repair Cost:
Average Mileage:
102,750 miles
Total Complaints:
5 complaints

Most Common Solutions:

  1. new head and valve seat required (3 reports)
  2. not sure (2 reports)
2006 Hummer H3 engine problems

engine problem

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2006 Hummer H3 Owner Comments

problem #5

Oct 062015


  • Automatic transmission
  • 146,000 miles


I don't understand why ther's no recall on the Hummer 3. They cheap to fix

- plee, Ahoskie, NC, US

problem #4

Jul 012013

H3 LX 3.5L

  • Manual transmission
  • 162,746 miles

I've been trying to get an inspection sticker for idk how long and every time I take it somewhere it's a different problem...I got 1 thing fix and they told me it's something else so idk what's going on I've been to inspection places and they told me to get it fix to get another sticker....this has been an on going issue for way too long! Got a ticket cuz I can't get an inspection sticker! And got things they say I need to take care of but the check engineer light still on! Been on for a whole year!

- Anthony P., Houston, TX, US

problem #3

Feb 212012

H3 3.5L 5 cyl

  • Automatic transmission
  • 69,475 miles

I am so irritated I can't even begin to form intelligible sentences. The check engine light came on, attempted to call Onstar twice for an on demand diagnostic but the system was down. Drove straight to a local dealer explained the isssue and was told to try a non locking gas cap first to see if this corrected the issue with the check engine light. If not come back and they would schedule an appointment to look at my vehicle. Changed the cap. No resolution, light still on engine still running rough. Took to another dealer and dropped it off. A week later and 2981.92 in repairs and labor I now have new heads and valves. was told this was a known problem with the 2006 5 cylinder and that GM made changes in 2007. No recalls no recourse no warranty left. I have followed all scheduled maintence on my vehicle and it only has 69,475 miles on it! This not the only problem I've experienced with this vehicle since it's purchase in 2006 (that's for another complaint). I'm gonna talk to a lemon lawyer!

- Beth D., Sacramento, CA, US

problem #2

Jan 092012

H3 3.5L I5

  • Automatic transmission
  • 44,323 miles

Bought the vehicle from carmax and purchased extended warranty up to 100k! So hopefully there will be no issues once GM dealership repairs vehicle.

- Charles P., Fresno, CA, US

problem #1

Dec 052011


  • Automatic transmission
  • 91,000 miles

Engine light came on when I switched gas stations and now stays on.

- marabe, Clinton, WI, US

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