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NHTSA — Engine And Engine Cooling Problems

2006 Hummer H3 (Page 1 of 2)

3.3

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
39,800 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Hummer H3 engine problems

engine problem

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2006 Hummer H3 Owner Comments (Page 1 of 2)

problem #26

Jun 182014

H3 6-cyl

  • miles

A D V E R T I S E M E N T S

2006 Hummer H3. Consumer writes in regards to repairs to vehicle radiator overheating problems and seeks reimbursement for recall notice 15042. The consumer stated the radiator, thermostat and water pump, were replaced on more than one occasion.

- San Gabriel, CA, USA

problem #25

Jun 082015

H3 6-cyl

  • miles
2006 Hummer H3. Consumer writes in regards to vehicle air conditioning system defect. GM acknowledged there was a defect with the ac and a recall was issued. However, the parts were not available. Also, the engine light illuminated. The thermostat and sensor were replaced.

- Douglasville, GA, USA

problem #24

Mar 012014

H3 5-cyl

  • 90,000 miles
The oil has been changed but I will drive it 10 to 15 miles and stop. The oil light and the dinger come on. I reset the button and then come to the next stop and the light comes on and the dinger goes off. The only way it stops is shutting off vehicle and let it set overnight. I check the oil when it does this and the dip stick is fine. Is this an oil sensor problem and is this under warranty or a recall?

- Buford, GA, USA

problem #23

Dec 312013

H3

  • 19,000 miles

A D V E R T I S E M E N T S

Drove car thru car wash.pulled onto highway light came on, loss of power, power failure.car would not go more than 2 miles a hour.pushed the gas pedal to the floor still no power.im concerned that if this happened with my grandchild in car on hwy this could be a major problem.please look into this problem [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Tracy , CA, USA

problem #22

Feb 092013

H3 5-cyl

  • 52,000 miles
Radiator rubs in the middle on the frame causing stress to the top, crackling cracks..causing leakage!!

- Juneau, AK, USA

problem #21

Dec 102012

H3 5-cyl

  • 65,000 miles
My vehicle has a cracked radiator and according to other Hummer owners this is a common defect that happens to these vehicles.

- Everett , WA, USA

problem #20

Apr 242012

H3

  • miles

A D V E R T I S E M E N T S

Engine light came on during emission testing, which caused the vehicle to fail. Just had the thermostat and evaporator valve replaced the week before. The emissions department stated that it was a code P0300, misfire in cylinder 1. I took the vehicle for diagnostics and after a coil test and compression test (failed), they stated that is was a cylinder valve leakage. They also stated that there was a bulletin out on 2006 H3 for this issue. When I contacted GM customer service, I was told that the vehicle's VIN was not a part of this bulletin and that the mileage was past the warranty. The only thing they could suggest to me is to take it to a GM certified repair facility and I would have to pay for the complete repair myself.

- Crown Point, IN, USA

problem #19

Apr 022012

H3 5-cyl

  • 63,000 miles
The check engine light goes off and on intermittently. The vehicle was taken to a mechanic who performed a diagnostic that located the failure at the engine head cylinder. The vehicle was not repaired. The manufacturer was contacted and denied assistance with the repair because the vehicle warranty was expired. The mechanic stated it was due to an inferior soft metal used to manufacture the heads which caused a loss of combustion when the engine was idling. The blowback at idle was what was causing the engine light to illuminate. Mechanic also stated this problem was a recurring problem in this 5cyl engine which is the same engine that is in the Colorado pickups and is covered under a GM recall in the pickups but not the Hummer. The mechanic stated that the issue will only get worst. Please help as I was given a price to repair of approx. $4000 if I was going to pay for the repairs myself at the dealership.

- Reno, NV, USA

problem #18

Mar 152012

H3 5-cyl

  • miles
Defective cylinder head from GMC - they know about this problem but won't assist with cost to repair, my H3 at 50,000 miles now has cracked cylinder head for no apparent reason and of course since my warranty is no longer in effect I have no recourse. Is there nothing that can be done about this?

- Washougal, WA, USA

problem #17

Aug 232011

H3

  • 104,000 miles
The contact owns a 2006 Hummer H3. While driving approximately 40 mph, the vehicle became hesitant while accelerating uphill. The vehicle was taken to the dealer for diagnostics. The technician stated that the head gasket needed to be replaced. The vehicle was not repaired. The approximate failure mileage was 104,000.

- Villa Rica, GA, USA

problem #16

Feb 012011

H3

  • 69,000 miles

A D V E R T I S E M E N T S

The contact owns a 2006 Hummer H3. The contact stated that the check engine light remained illuminated and the engine would exhibit a loud noise when the accelerator pedal was depressed. The vehicle was taken to the dealer who performed a diagnostic that located the failure at the engine head cylinder. The vehicle was not repaired. The manufacturer was contacted and denied assistance with the repair because the vehicle warranty was expired. The failure mileage was 69,000 and the current mileage was 71,000.

- Fresno , CA, USA

problem #15

Apr 212011

H3

  • 65,000 miles
Loss of power, was able to drive to the local GM dealer.mechanic stated it was due to a valve seat coming loose in the head.mechanic also stated this problem was a recurring problem in this 5cyl engine.the same engine that is in the Colorado pickups and is covered under warranty in the pickups but not the Hummer.

- Middlebrook, VA, USA

problem #14

May 062011

H3

  • 80,000 miles
The contact owns a 2006 Hummer H3. The contact stated the engine coolant was leaking front the front of the engine. The contact examined the vehicle but was not sure if the leak was coming from the head gasket or engine block. The vehicle was not taken to have the failure diagnosed or repaired. The failure and current mileages were 80,000.

- Louisville, TN, USA

problem #13

Feb 152011

H3

  • 33,700 miles
The contact owns a 2006 Hummer H3. The contact stated that when the vehicle was set in first gear and parked on an incline, the vehicle abnormally roll backward. The contact spoke with the dealer and they advised using the emergency parking brake because the engine would not have sufficient compression to hold the vehicle. The contact stated that the failure should be explained in the owners manual so that the failure would not occur. The failure and current mileage was 33,700.

- Seminole, FL, USA

problem #12

Feb 112011

H3

  • 64,586 miles
While driving received check engine code for #5 cylinder misfire. Took it straight into the local GM dealer who informed me the head was already replaced at 16K miles and now another head is needed. GM is not willing to cover any cost as the 2006 does not have a power train warranty included. So contacted Hummer customer care line and still waiting on word what will be done.

- Jacksonville, FL, USA

problem #11

Feb 022011

H3 5-cyl

  • 69,500 miles
2006 H3 Hummer cutting off when idling, was diagnosed with same head valve seat problem as recalled Colorado atlas engine, same engine the H3 engine should be covered.

- Asheboro, NC, USA

problem #10

Mar 092010

H3

  • 62,000 miles
The contact owns a 2006 Hummer H3. The contact was pulling away from a traffic light when the engine began to exhibit a low power response. The vehicle was taken to an authorized dealer where a diagnostic test was performed; the technician was unable to detect a trouble code and informed that the problem was a manufacturer design which was a common issue. The vehicle was taken to two different independent mechanics for diagnosis. The vehicle was not repaired. The failure mileage was approximately 62,000.

- Sweetwater, TN, USA

problem #9

Jul 222010

H3

  • 27,000 miles
I own a Hummer H3 the other day the aircondition stop working I look at the heater blower the links to the air conditioner the wires and resistor were frayed and extreme hot. I had to un hook it so it won't start a fire. I am not the only person with this complaint and I read other peoples story's there should be a recall, I was told to replace it could cause a fire.

- Schenectady, NY, USA

problem #8

Jan 012009

H3

  • 54,492 miles
The contact owns a 2006 Hummer H3. He stated that the check engine light illuminated on the instrument panel. The vehicle was taken to the dealer where a diagnostic test was performed producing codes P0300 pertaining to a misfire at idle due to a leaking intake valve. He also stated that the vehicle needed a new cylinder. There were no recalls and the manufacturer would not assume any liability for the failures. The warranty was no longer valid. No repairs were made to date. The current and failure mileages were under 54,492.

- Topeka, KS, USA

problem #7

Apr 072009

H3

  • 61,870 miles
I recently purchased a 2006 H3. From the day I bought the car I have noticed a weird idle when the vehicle is warming up. Until recently I thought it was the way the vehicle ran normally. I decided to have the vehicle inspected by a mechanic. After being inspected the mechanic noticed the vehicle's valves were not seeded right from the factory, which has caused the misfire, which causes the weird idle. I now am in the process of contacting Hummer to see if there is a solution to the problem. The vehicle has only 61870 miles on it and I don't feel this should have happened this soon in the vehicles life. Service bulletins have been warranted and I would like to find a reasonable solution to the problem.

- Omaha, NE, USA

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