Most common problems for the big 3

Tell me about it, them duramax's ride like cadillacs on steroids!

 

One thing I dont like about the torsion bar IFS is the way it "pogos" over big dips in the freeway. I have hit my head on the ceiling a couple of times because of this ( :doah: ouch my head) however It may be due to worn out shocks.

 

I think everyone stock shocks suck big time, mine were horrible. Especially after a year, you could really tell they were inferior.

 

x2. It doesnt seem to matter who makes the stockers, they all seem to wear out, and ride like a brick. Replacement shocks always seem to do wonders for my vehicles. I must say that perhaps the worst shocks I have seen are the "FX4 Rancho" shocks that come on Offroad package'd SDs.

 

Arent those just the cheap rancho 5000s??

 

I think they might even be cheaper than cheap Rancho's. IMO, and from what other guys have said, the stock Ford shocks ride better, and last longer than the Rancho junk the FX4 package gets you.

 

I mentioned those things in my post, someone DID already say these things.

forgot about those two things, the infamous 53 block oh yes....how could I forget...:doah: And it wasn't just 98, it was '98 through late '00

Never even heard of any of these things before....from anyone that owns a Dodge.

Never heard of anyone complaining of the Dodge brakes. Infact, over at CK5, many guys mentioned they prefered the feeling of the Dodge brakes over the GM brakes when there was a GM vs. Dodge post over there. I would concur, The brakes feel much better at the push, and stronger under load than any of our spongy GM's. What I don't like about the GM's is how far you have to push the pedal to actually get brakes.

 

RJF's Red Cummins, i was merely trying to put everything in one message like I did the Ford one so that it is easier to read at once rather than having to read and get bits and peices throughout the post. Like a summarywaytogo

...now lets see if we can do the same for thr GM's

Again, the main reason for this thread is to be informative. there are so many people who post and ask which is better..........so i figured we'd tell where they all lack at!


Oh yeah, I almost forgot, The most common problem on all 3 is the prices they ask for them. They ask on average 5k more for the diesel option alone! I know diesel engines dont cost that much more than a gas engine to produce. We are getting ripped from trhe start.

 

the axle problem on the dodge is real my uncle has a 97 dodge cummins when he had 60k on it the rear axle started wandering out on him while pulling a goose neck.

 

This should be a Sticky....

 

Dodge and all that use the 5.9L cum. will have oil leaks. The timing gear cover, vacuum pump oil seal, valve covers on the 12 valves.

5.9L 12 valve 94 to 98 fuel return (I.E. 5/16 rubber line) braking down causing hard starting and a leak. Fuel shutoff solenoid and relays fail and cost to much. Exhaust manifolds leak, warp, loose bolts.

Ford 6.9L, 7.3L IDI glow plug system need to much service. Weak head gaskets and valve guides.

Ford 7.3L power strokes 94 to 97. Main engine wiring harness, and under valve harness weak needed heavyer termanals and connectors, better in 99 to 02. Orings on injectors all years,and fuel heater in filter housing,both needed to be made out of better stuf.

The 6.0L 03 to 04 runabilty cause by electronices and some injector problems. Ride problems on 03 to 06 because of switch to coil-over front supension.


Gm 6.2L, 6.5L glow plugs system same as the Ford weak. Ds injection pump is junk, should have kept the old Db pumps. Duramax 01 to 04.5 injectors, injectors, injectors. If came with better fuel filters (I.E. water traps plus regular filter) would have cut fail rate in half.

Injectors under the valve covers on all the big three. On the LLY is where they All should be.

 

As for the Duramax (GMC and Chevy) They have had wide spread overheating issues for quite some time now. I believe most of the overheating happened with the lb7 and lly Duramax engine. Maybe someone else can chime in on this one,

 

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/16137895/gotomsg/16139701.cfm

http://dieselplace.com/forum/showthread.php?t=37508&highlight=overheating

http://dieselplace.com/forum/showthread.php?t=43117&highlight=overheating

http://dieselplace.com/forum/showthread.php?t=38158&highlight=overheating

http://dieselplace.com/forum/showthread.php?t=38939&highlight=overheating

There are many more all over the net. Do a google search and you will find many threads. Plus a fellow hotshotter has one that every now and then overheats.

The lbz's are out too!

 

I heard about overheating problems with the LLY at one time, but can't remember the source.

The new LBZ motor is OUT! A buddy has one ordered and should be here soon.