Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Duramax Diesel Questions
220 messages, Last post on Dec 04, 2009 at 4:59 PM
You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram
|
|
|---|---|
| Will taking off catalytic converter harm the engine or help?. I have a 2004 duromax 6.6 diesel engine. | |
|
|
|
Replying to: rsorling (Aug 26, 2008 3:33 pm) with 12000 miles towing we left Missoula Montana downhill 125 plus miles to Lewiston Idaho. I used the tranny retard system the whole way with very little throttle. stopped for fuel 50 miles above Lewiston. started up after fueling andapplied throtle to continue down when the banshee scream started. i pulled over and had the wife listen as i rolled forward and back. noise only occurred under medium throttle. I eased the throttle and picked up to 50mph with no noise. long story short. TOOK TRUCK TO CHEV DEALER IN LEWISTON VERY KNOWLEDGEABLE YOUNG MECH, i DID NOT LET THE ENGINE RUN AND COOL DOWN WHEN STOPPING FOR FUEL.ESPECIALLY WHEN TOWING CLOSE TO THE CGVWR. IMPROPER TORQUE ALLOWED TURBO TO WARP. REQUIRING TOTAL REPLACEMENT UNDER WARRANTY. I WAS ALSO TOLD THAT WHEN THE NOISE OCCURRED IT WAS THE BUSHINGS IN THE TURBO. ALSO THAT THE TURBO IS OILED VIA #4 CRANK JOURNALS. THE BUSHING GRINDINGS CAN CAUSE THE #4 JOURNAL TO SCORE AND DESTROY THE ENGINE. FORTUNATELY I SHUT DOWN EARLY AND PREVENTED ADDITIONAL DAMAGE. NOW HAVE 80000 PLUS WITH NO PROBLEMS. I HOPE THIS HELPS JM
|
|
|
Replying to: oldfireguy (Nov 01, 2009 10:43 am) |
|
| I have been arguing with GM about a cracked piston. In their service memo ID 2347464 they are dowining using Aftermarket Power Up devices. This includes a bunch of units that can harm the Izusu motor. They claim that all (at least the dealer I am working with) will harm their engine. The fact is that on pages 10 and 11 in their bulletin, they make reference to a (only one) cracked piston is due to an injector malfunction. My truck had one cracked piston in one cylinder that they first diagnosed as a bad injector in that cylinder. Now they are saying that the injector is ok and they are going to re-use it in a remanufactured motor. I feel they are trying to blame my Banks unit for an engine failure they are responsible for at a cost of $11,000.00. I have confronterd their service department, Banks and the BBB to resolve the issue. I have run the Banks unit for 4+ years with no adverse affects as I pay close attention to the monitor. It is important to know the duramax has 85,000 miles but has been emacuately maintained and cared for. I think we need to question some of their extened warranty policys and make sure they are dealing square. This is not a dis to the manufacture but a local problem. The minute they see a third party device they immediately discount any type of warranty. As long as they are used properly they can be useful. If they are affraid of the capabilities of the engine, they need to source something other than Izuzu. Kent | |
| I have a 2004 Sierra Duramax Diesel and have had some pretty bad luck. First sign of problem...I thought I ran out of fuel, but the fuel gauge showed I had over 1/4 tank. I called the tow truck and they said they would bring me diesel. Before he added it to the tank, I asked him if he was sure it was diesel, and he said yes that he had to make an extra stop at the gas station to fill the gas can. After priming, I was able to drive it home (3 blocks). I called the GMC dealer to have it serviced, and I drove it the next morning about 10 miles. It seemed to run fine even on the freeway. They informed me that afternoon that the fuel pump went out. They drained the tank and replaced the pump. They could not get the truck to run after that. After 5 wks of being in the shop, the service person I was dealing with called me from his cell phone and informed me that phone calls were taped, so I needed to talk to him on his cell phone. He asked me if I happened to put gasoline in the tank. I told him NEVER. I said his tech must have done it when they refilled the tank because it was obviously running when I dropped it off. Long story short...I've had my truck back for a year now and it's been running like crap ever since. It's been in the shop at least 6 times since that incident. When they so called fixed my truck, they said they had to replace the injectors, glow plugs, fuel pump, flush out the entire system, blah blah blah....it ended up being $6500 to repair, but he somehow was able to get my warranty to cover everything. All I had to pay is the $100 deductible. My truck is once again in the shop after just getting it back a few weeks ago for the fuel sensor going out. Now they said they need to replace glow plugs again, and there is an oil pan leak between the engine and transmission and they need to replace the oil pan gasket. To get to that, they said they need to remove two cross member plates, one is a factory part, the other is an aftermarket part which will not be covered by warranty to remove. Does this sound normal? I know I'm a girl, and don't know alot about diesel trucks, but is my truck ruined forever from them screwing up? I am frustrated and don't know what to do. | |
|
Replying to: jillyo5 (Nov 04, 2009 9:22 am) |
|
|
Replying to: jillyo5 (Nov 04, 2009 9:22 am) |
|
|
|
I'm looking at trading my 99 dodge cummins and buying an 03 gmc d-max 71,000 miles was wondering on some input, what to watch for, the good, the bad, the fuel millage and so one all input would help thanks!!
|
|
|
Replying to: youngdmech (Nov 05, 2009 7:23 pm) |
|
|
Replying to: jillyo5 (Nov 04, 2009 9:22 am)
|
|
You are here:
Forums
Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Duramax Diesel Questions
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2004 Chevrolet Silverado 2500
2004 GMC Sierra 2500
2006 Chevrolet Silverado 3500
2006 GMC Sierra 3500
Browse by Board
Browse by Topic
Today's Chats
