Bed out of line, mounts or bent frame?

[Liroku]

My new truck's bed('96 Ext Cab) is way out of line with the cab. I am hoping it is mounts or it is somehow fixable, but I fear it may be frame problems from excess loads being placed in it. At the top of the bed, it's about 5/8" away from the cab, at the bottom of the bed, the gap is about 1 1/2". It's about the same on both sides. I have seen a few trucks with this problem, anyone know what the cause is and what I should be looking for?

 

[90halfton]

Mine and all I have seen are this way, I am curious to hear if anyone has a good answer for this. Figure they were designed on a Friday at 4:45.

 

[thz71]

Cab mounts

 

[90halfton]

So the beds not out of alignment, its the cab?

 

[poncho62]

Might be cab mounts, but I would be having a good look at the frame also.....They were known to rust out and break.

 

[21Actual]

Mine, along with many other GMT400's Ive saw have this mis alignment as well. Frame and mounts on my body and chassis are solid. I chalked it up to my truck having the cab and box of for restoration before I bought it. Figured the body bolts were over torqued causing the issue. I was going to try and sort it out with some shims one day.

 

[volunteerff21]

Cab mounts

Yupppp.


I have seen frames rust through and begin to sag right behind the cab, but a quick look underneath should help you figure out if that's the problem.

 

[90halfton]

Ill have to check mine out when I have time. Hard to believe its rusted out cab mounts, and the trucks never been apart or wrecked. Its a 90 model weve had since new. It has 100k miles and spends its life napping in the garage. And never towed or hauled anything beyond its abilities. Could be a factory flaw. Guess ill have to jack it up and check it out one of these days.

 

[Liroku]

Thankfully rust isn't a huge problem down here. It's dry most of the year and roads are rarely salted or anything. I checked it out before I bought it and the frame looks pretty rust free. How hard would it be changing cab mounts? Do you do it underneath the truck, or will I be pulling up carpet.

 

[JurgenS]

I have the same issue and I know for sure the mounts are not rotten. Recently I have sandblasted the frame and used new body mounts, still the alignement of the bed and cab is about 1/2" off.

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