4x4hunter
12-26-2004, 07:38
Duramax might be adequate in your 2500 or 3500 daily driver but it can't live up GM's claims as a commercial-type engine in their Medium Duty truck line.
We run 4500 Kodiaks and deliver power boats and yachts - all loads are below GM's listed GCWs.
After a 4 month battle, GM repurchased one of our units under the Texas Lemon Law. It wouldn't, couldn't run despite 4 different dealerships trying to make it run. Turbo, catalytic convertor, left cylinder head, injectors and numerous sensors, etc. replaced. Problems started at approx. 19,000 miles. What a piece of junk, costing us some $87,000 in lost business. The dealer we delivered this unit to, still has it in storage since 7/'04 waiting for GM to collect it.
The truck that replaced this one is now encountering similar problems. RPM drops to 2000, no power. It has 24,000 miles on the clock. It's broken down at the 10th dealership in a row, over some 2200 miles, in Englewood, CO. On this journey, truck was towed into Tucson, just before Thanksgiving, where they took a week to replace the turbo. (We believe this was not our problem). Good luck in finding any parts for your LLY at the dealers! It made it 60 miles from there to Benson and was towed in and delaer replaced the fuel filter. (even though fuel filter was replaced 1000 miles prior).
Then broke down in Albuq., NM where another fule filter was replaced. Driver insisted this fuel filter be cut open and fuel tanks checked for water or contamination. Filter absolutely clean and tests on tanks negative.
Driver limped in to Dallas (home base) and dealer took complete fuel delivery system apart as too high vacuum readings. After a week forund small cracked plastic fitting on fuel filter housing.
Truck went to Detroit. Electrical problems on the way. That took 3 dealers before was correctly fixed. After loading power boat in Detroit for San Diego - 2000 RPMs and no power. Dealer diagnosed bad catalytic convertor. 3 days to order and install (this is Detroit! Motor city! Not far from Flint! No dealers have any in stock!)
After encountering same problems en route, and 3 more dealers, scratching their asses (which also requires some sort of diagnostic code!) we're now down in CO still trying to get to Calif. and deliver a 7800 pound boat. No way will it make the grades through CO.
In our experience this engine is Isuzu junk and just doesn't cut it. If have to replace this unit we'll have to go up to a 6500 and get the Cat. Too bad GM doesn't offer the Cat in their smaller class trucks - then again many more complaints like ours, they just might have to.
We run 4500 Kodiaks and deliver power boats and yachts - all loads are below GM's listed GCWs.
After a 4 month battle, GM repurchased one of our units under the Texas Lemon Law. It wouldn't, couldn't run despite 4 different dealerships trying to make it run. Turbo, catalytic convertor, left cylinder head, injectors and numerous sensors, etc. replaced. Problems started at approx. 19,000 miles. What a piece of junk, costing us some $87,000 in lost business. The dealer we delivered this unit to, still has it in storage since 7/'04 waiting for GM to collect it.
The truck that replaced this one is now encountering similar problems. RPM drops to 2000, no power. It has 24,000 miles on the clock. It's broken down at the 10th dealership in a row, over some 2200 miles, in Englewood, CO. On this journey, truck was towed into Tucson, just before Thanksgiving, where they took a week to replace the turbo. (We believe this was not our problem). Good luck in finding any parts for your LLY at the dealers! It made it 60 miles from there to Benson and was towed in and delaer replaced the fuel filter. (even though fuel filter was replaced 1000 miles prior).
Then broke down in Albuq., NM where another fule filter was replaced. Driver insisted this fuel filter be cut open and fuel tanks checked for water or contamination. Filter absolutely clean and tests on tanks negative.
Driver limped in to Dallas (home base) and dealer took complete fuel delivery system apart as too high vacuum readings. After a week forund small cracked plastic fitting on fuel filter housing.
Truck went to Detroit. Electrical problems on the way. That took 3 dealers before was correctly fixed. After loading power boat in Detroit for San Diego - 2000 RPMs and no power. Dealer diagnosed bad catalytic convertor. 3 days to order and install (this is Detroit! Motor city! Not far from Flint! No dealers have any in stock!)
After encountering same problems en route, and 3 more dealers, scratching their asses (which also requires some sort of diagnostic code!) we're now down in CO still trying to get to Calif. and deliver a 7800 pound boat. No way will it make the grades through CO.
In our experience this engine is Isuzu junk and just doesn't cut it. If have to replace this unit we'll have to go up to a 6500 and get the Cat. Too bad GM doesn't offer the Cat in their smaller class trucks - then again many more complaints like ours, they just might have to.