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2006 GMC Sierra problems

The most common problem on the 2006 GMC Sierra is brakes, typically around 48,655 miles. Its complaint count is close to a typical Sierra model year.

Typical yearClose to a typical year
Year score
75/100
Owner complaints
53
Recalls
4
Service bulletins
220
Worst area
Brakes
Fuel economy
15-17mpg

The worst 2006 GMC Sierra problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Brakes
    27
  • Electrical
    7
  • Suspension
    6
  • Steering
    4
  • Airbags
    3
  • Visibility
    3
  • Fuel system
    2
  • Tires
    2
  • Transmission
    2
  • Body
    1
  • Engine
    1
  • Lights
    1
  • Locks
    1
  • Seat belts
    1
  • Seats
    1

Specific symptoms reported on the 2006 GMC Sierra

Brake failure 9ABS 6

Recalls 4

Wheels: rimReported August 11, 2006 · 3,227 vehicles affected
What is wrong
Certain sport utility vehicles and trucks fail to comply with the requirements of federal motor vehicle safety standard no. 110, "tire selection and rims." these vehicles have an incomplete tire rim designation on the certification/tire label located on the driver's door edge. In addition, the label may also be missing the tire load rating on the label. Although this information is not required by the standard, if a tire of a lesser load rating is installed, the tire may not be able to sustain the loads encountered during use.
Risk
If a customer replaces a wheel and only relies on the rim size designation that is indicated on the label, a wheel that is of a different rim contour designation may be installed. It may be difficult or impossible to mount the tire on a wheel with the wrong contour. If the tire is mounted on the wheel with the wrong contour, the wheel and tire may not perform as intended, which could increase the risk of a crash.
Remedy
A label that will correct the label originally installed will be mailed to consumers along with installation instructions. The customer will have the option for dealers to install the label. The recall begaon on november 7, 2006. Owners should contact cadillac at 1‑866‑982‑2239, chevrolet at 1‑800‑630‑2438, and gmc trucks at 1‑866‑996‑9463.

Recall number 06V307000 · Recall details

Engine and engine coolingReported August 3, 2006 · 38,439 vehicles affected
What is wrong
On certain trucks equipped with an 8.1l v8 (rpo l8-VIN g) engine have a condition in which the engine fuel rail pulse damper retainer clip may fracture resulting in inadequate retention of the damper.
Risk
If the damper comes loose, a fuel leak may result. Fuel leakage, in the presence of an ignition source, could result in a fire.
Remedy
Dealers will replace the engine fuel rail pulse damper retainer clip free of charge. The recall began on august 31, 2006. Owners may contact chevrolet at 1‑800‑630‑2438 and gmc trucks at 1‑866‑996‑9463.

Recall number 06V289000 · Recall details

Equipment: other: labelsReported December 7, 2005 · 32,068 vehicles affected
What is wrong
Certain trucks and sport utility vehicles fail to conform to the requirements of federal motor vehicle safety standard no. 110, "tire selection and rims." these vehicles were shipped with tire and loading information labels listing an inacccurate vehicle capacity weight.
Risk
A misprinted label could lead to improper vehicle loading specifications or tire inflation which could result in a tire failure, increasing the risk of a crash.
Remedy
Owners will be provided with corrected labels and installation instructions. At the customer's option, a dealer can install the label for them. The recall began on march 31, 2006. Owners may contact buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, hummer at 1‑800‑732‑5493, pontiac at 1‑800‑620‑7668, saturn at 1‑800‑972‑8876, or isuzu at 1‑800‑255‑6727.

Recall number 05V552000 · Recall details

Steering: hydraulic power assist: hose, piping, and connectionsReported October 5, 2005 · 123,592 vehicles affected
What is wrong
Certain passenger vehicles may have been built with a power steering hose that is not to specification. Under extreme steering maneuvers, such as turning the steering wheel fully to the left or right while braking, the hose may fracture and leak fluid.
Risk
If this were to occur, power steering assist would be lost and increased steering effort would be required. On vehicles equipped with hydro-boost power brakes, it could also result in loss of power brake assist and increased braking effort would be required. If the power steering fluid spray were to spray onto hot engine parts, an engine compartment fire could occur.
Remedy
Dealers will inspect the power steering hose(s) for two suspect date codes and replace them if required. The recall will begin on october 14, 2005. Owners may contact chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, isuzu at 1‑800‑255‑6727, or hummer at 1‑800‑732‑5493.

Recall number 05V455000 · Recall details

See all 4 recalls for the 2006 GMC Sierra

Technical service bulletins for the 2006 GMC Sierra 220

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 220 bulletins for the 2006 GMC Sierra

2006 GMC Sierra fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
5.3L 8‑cyl HybridRWD161917
4.3L 6‑cylRWD14-152016-17
4.8L 8‑cylRWD14-151916-17
5.3L 8‑cylRWD141916
5.3L 8‑cyl Hybrid4WD151816
6.0L 8‑cylRWD131815
4.3L 6‑cyl4WD1317-1815
4.8L 8‑cyl4WD141815

What 2006 GMC Sierra owners say

Most recent owner complaints, unedited.

Filed Dec 26, 2015 · Brakes · 81,750 miles · OH

Total brake failure while in motion. Corroded brake line ruptured causing immediate loss of all fluid. Had this happened 5 minutes earlier, I would have been on a four lane highway in bumper to bumper christmas traffic. At 70 years old I can only imagine how catastrophic an accident my reflexes would have generated. The fluid sprayed on the hot engine creating a cloud of smoke. I was afraid the truck was on fire. The fluid cooked off the engine as smoke and again luckily there was no fire. Now after extensive repairs, I am very nervous behind the wheel of this vehicle. This very dangerous situation with corrosion should be addressed as blogs on the internet indicate this dangerous issue has been ongoing for quite awhile. I have attached the invoice of the repairs required. I was in the drive through of a mcdonalds and had placed my order and was pulling to the window to pay when the brakes failed. Luckily I was only moving slowly at that time, thus able to avoid injuring anyone or damaging any other vehicles.

Filed Jul 20, 2015 · Brakes · 57,000 miles · KY

Brake pedal went to floor almost causing an accident before the vehicle came to a stop. Before the service light came on. The service light did come eventually at which time we checked the master cylinder which was extremely low so we filled it thinking that was the problem. The next day we noticed brake fluid dripping and after checking realized that at least one of the brake lines were were rusted through in several places and all of the other lines are terribly rusted and probably on the verge of leaking also. This is a truck that we usually pull our camper with. Luckily we were not pulling it at the time this occurred.

Filed May 12, 2015 · Electrical, Visibility · 135,000 miles · TX

Turned off engine, HVAC fan still on. Will not turn off. This is the dual climate control system. Had to remove fuse so the battery will not discharge. Service bulletins were issued for this problem but did not include all vehicles, including ours.

Filed Feb 18, 2015 · Electrical, Seat belts · 10,000 miles · IL

Tl* the contact owns a 2006 gmc sierra. The contact stated that while driving at various speeds, the seat belt warning indicator illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 10,000. Updated 7/23/15*cn the consumer stated the front impact sensor did not work. The red light was still on. The consumer was informed it was related to the driver's seat. The dealer his vehicle was not on the recall list. Updated 07/28/15

Filed Feb 12, 2015 · Brakes · 110,400 miles · MD

Drove from baltimore, md to cleveland, oh. Parked, the next day attempted to drive and brake pedal went to floor. Brake line on drivers side toward the rear had rusted out, had to have truck towed and brake line replaced. In dec. 2014, one year later, truck was parked for 4 days in drive, went to drive brake pedal to floor again, had to have towed, 4 lines replaced.

Filed Jan 23, 2015 · Brakes · 39,889 miles · NC

Was coming to a stop light and brake pedal went all the way to floor. Had to step on several times to get stopped. The factory electrical wire in factory loom in factory clamp hooked to brake line wore a hole through brake line to right front wheel. Wore through directly under the master cylinder. Luckily I was not going at high speed or this could have been a fatal incident!!!!!!!!! This is something that come from factory and needs to be addressed.

Filed Dec 22, 2014 · Airbags · 114,500 miles · FL

In late october, 2013, I purchased my 2006 gmc sierra c1500 standard cab, 2wd pickup from a private owner. On or about, december 01, 2013, I noticed that the "service air bag" warning message appeared intermittently. The "airbag" illuminated symbol in the dash instrumentation area was also illuminated. This would randomly come on and go off during normal operation of the vehicle. I subsequently took the truck to a local gmc/chevrolet dealer for service of this problem. They charged me to fix the issue and it did not appear for about a week after their repair. I should have known better, as the dealership has been unable to successfully repair previous issues on other vehicles that I have had serviced there. The "service air bag" message has been on constantly since about february, 2014, as well as the illuminated icon in the instrument cluster. I have no confidence in my local dealership with their ability to remedy the situation and may have to seek third party repair for this issue. General motors seems to have no web site to assist owners and I must now glean knowledge from the internet in an attempt to remedy the issue. I can find no recall information for my make and year of vehicle for this problem, but, that does not mean that one does not exist.

Filed Dec 12, 2014 · Airbags · 120,000 miles · WI

Tl* the contact owns a 2006 gmc sierra. The contact stated that the air bag lights were illuminated. The dealer stated that the air bag sensors needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The VIN was not available. The failure mileage was 120,000.

Filed Nov 13, 2014 · Brakes · 87,000 miles · IA

Brakes failed at highway speed, brake pedal went to the floor with very little braking. On investigation, brake oil would spray from the brake line under the truck.

Filed Oct 28, 2014 · Steering · 160,000 miles · CA

Tl* the contact owns a 2006 gmc sierra. While driving 25 MPH, the steering wheel became difficult to turn. The vehicle was taken to an independent mechanic. The technician diagnosed that the rack and pinion was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 160,000. ..updated 01/14/15 *bf updated 01/15/15*jb..........updated 02-02-15*bf..updated 03-02/15 *bf status update 03/17/15*jb updated 8/31/2017

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Questions about the 2006 GMC Sierra

Is the 2006 GMC Sierra reliable?

Owners have filed 53 complaints about the 2006 GMC Sierra, close to a typical Sierra model year.

What is the 2006 GMC Sierra year score?

The 2006 GMC Sierra scores 75 out of 100 (average). The score compares it with the other model years of the GMC Sierra: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2006 GMC Sierra?

Brakes, with 27 complaints, typically around 48,655 miles. Next is electrical (7).

How many recalls does the 2006 GMC Sierra have?

4 recalls, covering wheels, engine and engine cooling and equipment.

What year does the GMC Sierra have bad brakes?

The GMC Sierra model years with the most brakes complaints are 1999 (338 complaints), 2000 (228 complaints) and 2001 (150 complaints).

What gas mileage does the 2006 GMC Sierra get?

Official estimates for the 2006 GMC Sierra range from 15 to 17 mpg combined. The most efficient version (5.3L 8-cyl hybrid, RWD) gets 16 city and 19 highway.

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