82 Suburban Vin ID. technical questions.

Apr 05, 2006 10 Replies
N

According to the LMC truck catalog. The Vin of my truck says its a 3/4 ton Code 2, with a 350 heavy duty engine, Code M. The GVW range is G which isn't listed in the catalog, But F is the highest weight listed at 7001-8000 lbs. So what is G. But here's whats got me now. When I look up the exhaust system on Rock auto or , Autozone, They show a 82 Suburban, C20 Code M exhaust listed like this. 81-85 Suburban Models w 350 C.I.D-129.5" W.B.



2WD, 4BBL, Heavy duty- Do not use w/FED Emissions or H5D emissions. It is a Y-Pipe 2.5"single exhaust all the way back with NO CONVERTER. The Canadian version has a Y-pipe 2.5"single exhaust w/converter and 2" dual tailpipes . Eng Code L. The old rotted Y-pipe looks to be the one without a converter based on the length .I dont think the information is wrong, but didn't think vehicles were made without converters back then that people could buy that wern't cops or government. Also I have an air pump and airtubes on the manifolds, so there's some emissions on it. I was told it had a factory tow package and it still has a working hand brake for the trailer. My problem is I need to be sure, because I have to get an emissions check, for 1 farging year, and I have to put a new exhaust on it. if it came without a converter, I'm going to put the factory exhaust on it, with a turbo muffler , because it available and not too much money. And it will pass without one. If it has to have a converter, then the price went up. Thanks.

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S

I have had a couple late '70s-late '80s 1/2T and 3/4T Pick-ups and Suburbans that appeared to have factory exhaust and no converter and weren't diesel converts. I would ask the emissions check station what it is supposed to have.

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N

The emission guys wont help. Everyone's pised off in that place, because their car wont pass. They,re minimum wagers. Some cant drive a stick, They toast your clutch, or put permanent 4 wheel drives on 1 set of rollers and try it. They do a tailpipe gas check here. They don,t care what's on your car. They run your VIN and check the emissions for that vehicle, as it came new. I know many ways to get a vehicle to pass , but I never tried without a converter if it was supposed to be there. Dual exhaust is real popular on

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A

The VECI (tune up) label underhood should show which emissions components the vehicle came with. Check inside the glove box for the RPO label, see if it shows H5D listed. There should be a sticker inside the drivers door jamb or on the drivers door which shows the vehicles GVWR, if it's at or above (IIRC) 8600 pounds, it probably came without a catalytic convertor.

Vehicles with a catalytic convertor had two tail pipes, without a catalytic convertor had one tail pipe, so you can look at the back of the truck and see if there is evidence of a second tail pipe hanger also.

3/4 ton Suburbans -did- come without catalytic convertors in 82. Government and police departments were not exempt from emissions regulations.
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S

Is it a 3 or 4spd auto? 4spd auto is a TH700R4 transmission.

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S

Have the exhaust installed that you want, have it tested, if they say it has to have a converter, then hack out a short section of pipe and slip an aftermarket converter in.

If some get by with duals by removing one tailpipe, how are they gonna know if you have a converter if they don't look underneath?

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