Used 2006 GMC Sierra 3500 Consumer Reviews
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We have a limited number of reviews for the 2006 Sierra 3500, so we've included reviews for other years of the Sierra 3500 since its last redesign.
Best of breed
Crusty Codger, 09/15/2009
2005 GMC Sierra 3500 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
9 of 9 people found this review helpful
Except for the cruise control switch that failed early on and the really poor tires that were provided I have had zero problems with my GMC 3500 long bed duramax allison crew cab dually that I purchased in 2005. My GMC has largely been used for hauling trailers, including my 35 foot fifth wheel, a car hauler and a 20 foot box trailer. The diesel never falters, even on fairly sharp inclines. And compared to Ford or Dodge the engine remains quite quiet.
Duramax Power
BigIron, 05/11/2004
2004 GMC Sierra 3500 4dr Crew Cab SLT 4WD LB (6.0L 8cyl 4A)
5 of 5 people found this review helpful
I haul a 11'6" Lance Legend camper and pull a 8'x12' trailer with it loaded with ATV's and a motorcycle and the truck does all I want it to. I traded a Powerstroke in and I am pleased that I did. It's quite and rides and handles a lot better then my old Ford. I am getting around 12mpg at freeway speeds with this load.
2006 GMC Sierra 3500 for sale near you
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A Real Truck
TOW MAN, 06/06/2002
2002 GMC Sierra 3500 4dr Crew Cab SLE 2WD LB DRW (6.0L 8cyl 4A)
4 of 4 people found this review helpful
This vehicle has surpassed all our expectations (except for the dealer who is mediocre). The cabin noise level is lower than most of the cars that I have owned in the last 15 years. Build quality is improved over the 95 GMC that I owned. I tow 10 to 13K pound loads on a daily basis. Hauling horses I routinely discuss trucks with other guys at horse events. I find that I can out haul them, get slightly better gas mileage and the TRUCK IS IN THE SHOP less than my Ford F350 friends (one of whom has sold his to buy a Chevy 3500). If you are looking for a real work rig, this is it.
2004 3500 Duramax 6.6 SLT DRW Crew Cab
Pilot, 04/18/2008
2004 GMC Sierra 3500 4dr Crew Cab SLT Rwd LB DRW (6.0L 8cyl 4A)
3 of 3 people found this review helpful
I've had this truck for almost 4 years, and I have nothing but good to say. I have a 37' 5th wheel, which when loaded is right at 16300 lbs and it pulls it great. Now I'm not going to tell you that I don't know the 5th wheel is back there, but this truck is a joy to drive while pulling. She'll be paid for in a couple of months, and I plan to keep her for a long time.
A Truck that puts a smile on your face!
don lewis, 11/23/2009
2006 GMC Sierra 3500 SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 4A)
3 of 3 people found this review helpful
I have owned this truck since 2006 and now have 56000 miles on it. The Duramax/Allison combo outshines the rest. I have hauled volleyball teams, 15000lbs 5th wheel up the Cascades, to work everyday and a multiple runs crosscounty and I smile everytime I start this truck up. Do I have complaints? One, the roof liner fit and finish leaves alot to be desired :( I have drove the rest and this is hands down the best. A Quiet diesel that can smoke the tires. I laugh when the Toyota boys try to pull something heavy up the mountains, they just don't have it. It will be the last truck I own.
Best vehicle i have owned
mark mcrae, 08/31/2006
2006 GMC Sierra 3500 SLT 4dr Extended Cab LB (6.0L 8cyl 4A)
3 of 3 people found this review helpful
Bought deisel truck for camper and boat. this truck goes over mountain passes like the load isn't there, 15,000lbs. I bought an aftermarket engine program to increase performance, and with this chip I get 20mpg empty, 15mpg with boat or camper, 13mpg with boat and camper. Programer takes 5 minutes and allows me to program for specific loads or to put it back to stock settings, recommend this. There has not been 1 problem with truck and have already put on 12,000 miles in the first 4 months. Very happy customer.
Piece of crap
Carlos Fernandez, 05/08/2004
2004 GMC Sierra 3500 4dr Crew Cab SLT 4WD LB (6.0L 8cyl 4A)
6 of 8 people found this review helpful
This was the worst vehicle i ever had. It broke down right as i was pulling out of the dealership. The dealership then actually charged me for towing it the 10 feet to the service area!! Turns out the axle was faulty. They also found that the radiator leaked too.
GMC 3500
ronshoney, 06/06/2005
2005 GMC Sierra 3500 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
4 of 5 people found this review helpful
It's a beautiful truck, feels like your riding in luxury. We have the TV/DVD package and that works great for our 4 kids who fit comfortably in the back on long trips. Good on gas for something that size, always runs and drives great. Have also used it to pull out the tractor when it got buried plowing the field, was not a problem it came right out and the truck barely had to try. Also pulled out a boat hauler that was stuck in a field, no limit to this truck.
I will never own a GMC product again
mikep16, 12/24/2013
updated 01/03/2018
2004 GMC Sierra 3500 4dr Extended Cab SLT 4WD LB (6.0L 8cyl 4A)
5 of 7 people found this review helpful
It is no wonder GMC's cannot compete with Ford any longer. I was sent an email to update this -12/29/17. Not sure why! Still the same title for sure but now worse, entire dashboard is not functional, speedo does not work, all other gages peg out when starting the truck. At least it is running-mostly. I have to hand pump the diesel filter to get the truck to start. Happens about once a month or so. (no it is not standar maintenance issue). Replacing the batteries annually now (seems something is draining them when I am not looking!) I have received a call from Cust support about the dealer charge offering to reimburse some payment. I would have even considered changing my review if he would have helped. Then he disappeared! From the Dealer using my truck to tow the owners horse trailer (when turned in for maintenance) and adding 100 miles to it...to the more than $3000 I had to put into the electrical within 3 months-to the instrument panel stopping to work (speedo, then oil pressure, then battery-which comes and goes) $900 fix it so I just use a GPS for my speedo-to the rattle in the steering because of design issue always going out....to the electric seat positioning clicking 7-8 times before settling into place-to now the heater/AC blower stopped working and a cost of $750 to fix it at PEP Boys. Thanks to youtube the heater fix will only cost me $150 in parts. (my friend just had the same thing happen to his Tahoe and had to pay $750) The heater went out again in a couple of weeks. replace resistor again, heater stopped again! Either this truck is a lemon OR my favorite GMC's are on their way out of business. (I am in Quality management and would not have allowed anything close to this happening where I work)
- Performance
- Interior
- Comfort
- Reliability
Great Truck
Big Rick, 10/14/2003
2002 GMC Sierra 3500 4dr Crew Cab SLE 2WD LB DRW (6.0L 8cyl 4A)
2 of 2 people found this review helpful
This is my 2nd GM diesel truck and it has operated flawlessly since delivery. The power and accelleration for a big truck makes it fun to drive. I tow a 14000 lb 5th wheel and can pass with ease going over the mountains. The mileage is about 10mpg with the trailer and running 65, without it runs about 18-19 mpg on the highway.
Amazing truck!
Ryan S., 06/21/2020
2004 GMC Sierra 3500 4dr Extended Cab 4WD LB (6.0L 8cyl 4A)
2 of 2 people found this review helpful
In my opinion the Sierra is one of the greatest GM vehicles ever made. From how comfortable it is all the way down to the quality of the cv shafts and control arms, this truck is all around amazing. Lots of low end torque! I would definitely recommend this truck to anyone!
- Safety
- Technology
- Performance
- Interior
- Comfort
- Reliability
- Value
gmc crew cab
marmcn, 10/09/2003
2002 GMC Sierra 3500 4dr Crew Cab SLE 4WD LB DRW (6.0L 8cyl 4A)
3 of 4 people found this review helpful
awesome power with the turbodiesel and the cummins transmission. can pull the anchor(boat) with the camper up cascade passes and still pass empty powerstrokes
A disaster
MyGMCLemon, 04/28/2006
2006 GMC Sierra 3500 SL1 4dr Crew Cab LB DRW (6.0L 8cyl 4A)
3 of 4 people found this review helpful
I am absoultely horrified that I have a brand new vehicle that actually just shuts itself off while I am driving. It has now been into the dealership twice with only 1200 miles on it. Since they can not get codes out of the computer they can not isolate the problem and fix it. This truck has been a nightmare. It has been to the dealership twice now for repair. I still do not have it back and they still can not figure out what is wrong.
Great Truck
tdorsett_1, 03/03/2003
2003 GMC Sierra 3500 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
Hauling hay and horses has never been so easy, power to spare, better on fuel mileage that I would have though. Pulling a small 2-horse slant load trailer with two 1200 lb. horses or a twenty-foot trailer loaded with three round bails of hay, I get an average of 18 miles per gallon. Without pulling, I get between 21 and 25 miles per Gallon. (Highway)
Proffessional truck!!!!
truckinisfun, 11/20/2002
2003 GMC Sierra 3500 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
I love the tramendous performance of my sierra at a ropping 325hp and 370foot lbs. of tourque.I also love the way it steers with my camper hooeked to the back,anyone who likes trucks should deffinetly at least check it out.
WHAT CAN YOU SAY....?
Big Money, 02/20/2003
2003 GMC Sierra 3500 4dr Crew Cab SLE Rwd LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
Extremely Satisfied with Fllet Manager Diane Ford, Ironic working for GM with that Name. Excellent Truck! 230K MILES On the Last One and going for 430k On the Duramax/Allison Combonation.
GMC Sierra duramax
Rich in suffolk, 01/20/2004
2004 GMC Sierra 3500 4dr Crew Cab Work Truck 4WD LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
You can always ask for more, but this truck gives the best of all I have ever driven. The Duramax is quiet and it seems to have more pep than my old 350 gas. Over the road unloaded I have gotten 22 mpg at I-95 speeds. Pulling a medium size 5th wheel is a pleasure. The allison transmission is absolutely super. I will buy another. By the way my other car is a Ford ambulance (diesel), the powerstroke is great but can't hold a candle to the duramax. The Dodge is just too loud.
Duramax Dually 2004
Gilles, 06/07/2006
2004 GMC Sierra 3500 4dr Extended Cab SLT 4WD LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
I purchased the Sierra dually Duramax (LLY - 310hp & 605flbs) to pull a heavy fifth wheel and so far my experience has been trouble free. So far I am fully satisfied although I only have 30,000 km and time will provide more information on reliability of the Duramax. I find it fun to drive and fuel efficiency is good compared to the other diesel (Ford & Chrysler). It provide plenty of performance compare to a gas engine. The interior is perhaps blend as per the critics but it provides a price advantage compare to the Ford's King Ranch. It does not take away from the performance.
My retirement truck that I love !!
my86gmc, 03/16/2009
2006 GMC Sierra 3500 SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 4A)
1 of 1 people found this review helpful
Best truck I have ever owned, period. Not sure what these other bad reviews are about? I have had no major problems. This truck pulls my 5th wheel better than anything on the road. Many Diesel magazines have given this truck its best in class award, and for good reason. Its a very comfortable truck to drive and loves to be hot rodded around. I'm at 45000 miles looking forward to many years of driving and towing with this. I added a Delco navigation unit plus a Delco 6 cd changer, it was well worth the price.
Great Truck
rick, 08/31/2009
2006 GMC Sierra 3500 SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
1 of 1 people found this review helpful
Excellent drivability. This truck has more power than the comparable Ford or Dodge, better mileage, and is MUCH quieter! (I'm a Dodge man) Mileage varies from 22 (cruise at 55mph, no load) to 12 (90mph with truck loaded and 14,000lb trailer). Plently of room in the cab and a full length bed too! Only problem with the truck is the moonroof has stuck open 3 times and lots of wind noise when open. The moonroof cover is designed more like a screen - the sun sure gets hot at an angle that directly shines on driver. The original tires had sidewall integrity problems at 55K. Goodyear great with warranty issues. The fuel gage takes a while to show that the tank is actually full (10min - 1hour).
'05 GMC Sierra Dually
drew, 04/12/2005
2005 GMC Sierra 3500 4dr Crew Cab SLT 4WD LB DRW (6.0L 8cyl 4A)
1 of 2 people found this review helpful
Great truck! Traded in '01 F350 7.3L for the GMC. The GMC is much more driver friendly with comfort and a more car like feel. Power from the Duramax is very good as compared to the "chipped out" F350. On the downside, the truck, although a softer feel overall, is a bit more bouncy than the Ford. Interior room is much smaller in the front and rear of the crew-cab.
The Haul Myster
Walking horse, 04/12/2002
2002 GMC Sierra 3500 4dr Crew Cab SL 2WD LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
We upgraded to a heaveier tow vechile. We have a horse ranch and haul 12,000 to 15,000# trailers. If you want a SERIOUS tow vehicle, this is it. Neither Ford nor Dodge can touch it. It is also eztremely quite, but due to the towing capacity a little hard riding. Build quality is great, especially considering this is a TRUCK
GMC 8.1drw excab
ssolfer, 10/23/2005
2002 GMC Sierra 3500 4dr Extended Cab SLE 4WD LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
Only problem has been the left door speaker went bad. Only thing I don't like about it is that the rear springs clunk with just the camper on some bumps at lower speeds
My 2005 3500 Xtend Cab 4x4 SRW 8.1L
Dale, 02/03/2005
2005 GMC Sierra 3500 4dr Extended Cab SLT 4WD LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
Ride seems very smooth. Some wind noise through the extended cab doors. Very powerful with the 8.1L V-8
2005 GMC 3500 SLT DRW
DREW, 08/07/2006
2005 GMC Sierra 3500 4dr Crew Cab SLT Rwd LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
The comfort and drivabilty beats the Ford 350. I had an '01 F350 which was a great truck, but had some reliabilty problems and the brakes were not up to the task. The GMC is much better overall with towing and the interior is more car like. My biggest complaint about the truck is the gray steel rims with cheap trim rings. For over $40K the truck should be outfitted with Ford/Dodge similar rims. I almost went for the Ford again because of this.
great vehical for towing over 14000 lbs
ace777777777, 10/03/2004
2005 GMC Sierra 3500 4dr Crew Cab SLT 4WD LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
i have 4000 miles on gmc3500lly 04 duramax allison crew cab dually, half of the miles is towing ,it gets 12 to 16 mpg, the motor and tranny handles the weight easily ,i have a bw gooseneck hitch to haul a 14000 dump trailor, sometimes going up and down 6% grades, the transmission downshifts automatically,its easy on the brakes when towing ,it dosent ride like a truck and its very quiet for a diesel its fun to drive and get lots of compliments on how the truck looks and when taking people for a ride in it they enjoy it ,i owned a dodge dikota a 2500 silverado and a heavy duty silverado 2500 and a heavy duty 3500 chevy chassis cab with a dump body i like the gmc 3500 the best
My Truck
Liz Cox, 03/23/2005
2005 GMC Sierra 3500 4dr Crew Cab SLT 4WD LB (6.0L 8cyl 4A)
0 of 0 people found this review helpful
I have to say my experience with my GMC has been awesome. I have travelled over 17,000 miles since I first got it. It hauls my 42' 5th wheel with no difficulty and my daughter enjoys the DVD system w/the wireless headphones only a little more than I do. Great sound system and entertainment system. Shocks are a little stiff but only when I'm not hauling. I did a lot of comparision shopping and my GMC had the most options for the best price.
2005 GMC
matin, 05/24/2008
2005 GMC Sierra 3500 2dr Regular Cab Work Truck 4WD LB DRW (6.0L 8cyl 5M)
0 of 0 people found this review helpful
Good reliable truck, never given me any trouble. Used it for 6 months in hauling 200 pound trailer.
2007 GMC 3500 carbon monoxide in cab.
daveo08, 11/29/2007
2006 GMC Sierra 3500 SLE2 4dr Extended Cab 4WD LB DRW (6.0L 8cyl 4A)
0 of 0 people found this review helpful
Having driven this truck only a short distance, 2400 miles, problems are already evident. The worst being a diagnosis, from a blood sample test, of carbon monoxide poisoning due to cab infilteration. This is caused by the missfiring of the injection electronics package and the poor cab fit and finish allowing the engine exhaust to get into the cab unless the recirculate mode is used on the heating system. Recirculate is defeated by the controller which will not allow the recirculate mode to be engaged except on max ac. The engine has very poor throttle response and smokes excessively under heavy acceleration. The engine has a propensity to consume oil.
Disappointed
JK1, 06/09/2002
2002 GMC Sierra 3500 4dr Crew Cab SLE 4WD LB DRW (6.0L 8cyl 4A)
0 of 4 people found this review helpful
i really really really wish I had bought an F-350....
the worst truck ever made
pdiddy, 04/30/2002
2002 GMC Sierra 3500 4dr Extended Cab SLE 4WD LB DRW (6.0L 8cyl 4A)
0 of 5 people found this review helpful
just doesn't stack up to the ford at all
Shoulda kept my FORD
Bob Sutliff, 01/04/2003
2003 GMC Sierra 3500 4dr Extended Cab 4WD LB DRW (6.0L 8cyl 4A)
0 of 1 people found this review helpful
Truck looks great! Fuel mileage (non towing) is not bad for a ton dually at 13 mpg. Towing is another story. Six (6) miles per gallon is the average for this 6.0L engine. Tow mileage is terrible and the truck is at its maximum performance on the interstate at 70mph. It absolutely has no power left.