Questions about the 93 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-25-2007, 02:03 AM   #1
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Default Questions about the 93

1. My headlight dimmer is a little wonky. If you even touch it, the dash lights will turn off, only works at the very last MM highest setting. Is there any way to clean this or is it just better to replace it, and if so, how do you do that?

2. I have this VERY odd noise coming from my exhaust, like a scraping/rattle sound. Only does it at idle or idle in gear, more commonly the latter. If i rock my engine a little (move the car back and forth in park), you can hear the exhaust creaking, but still not the same noise. The cat is pretty heavily rusted compared to my 89, and I'm thinking its original. How long is the normal interval to change/replace a catalytic converter?

3. Putting the car in gear and shifting at moderate throttle yields rather harsh shifting. Should I check the modulator? I don't mind the hard shifting since it is good for the clutches, but can be rather annoying at times. Also, the fluid is probably due for a change, it smells quite burnt, could this also be causing my hard shifting problem? I am doing the trans fluid change by the first, but would like some prior insight on the issue before I start hacking away.

4. While on the issue of transmissions, what is the recommended interval for replacing the transmission fluid and filter. I saw on a few places that it is the same at the 440T4 requiring 12-15k changes. Someone please guide me on this being that I know close to nothing about servicing the 4T60-e.

5. Next is, rather a simple question. I was thinking about getting a K&N drop in filter for it, but to the best of my knowledge, this airbox has baffles unlike my LN3'* airbox. Is it worth it to "gut" this airbox? or better off just doing a CAI? If sticking with the stock airbox, is it just a better idea to stick with a plain old paper filter being that the K&N would only have negligible effects on power?

Thanks alot guys.

edit: added a question

6. Where in HELL is the fuel filter? I can't find it
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Old 08-25-2007, 02:04 AM   #2
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3: look at the front trans mount, i bet its broken
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Old 08-25-2007, 02:30 AM   #3
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1. Rheostat is worn. Best to just replace the whole unit.
2. Also check teh heat shield above the cat and the muffler. They are both held on by rivets and if a rivet is gone, then that may account for the rattling. Not really sure how long a cat should last. It oculd very widely by each indivdual car and the climate.
3. I'm with Ryan. In addition to doing the fluid change, check all motor mounts, but definitly the front trans mount like he said.
4. Not sure here either but I was thinking it was a either 30K or 60K. Should say in your owners manual. You can do it more often than that if you prefer and depending on driving conditions and habits.
5. Your choice. I run a K&N in my gutted airbox and have been quite happy with the set-up. But if your going to spend the money for a K&N and going to do a true CAI, then it might be best to invest your $ in that when you are ready and just run a paper filter in the stock box for now.
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Old 08-25-2007, 02:32 AM   #4
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the S1 air boxes Suck. get a rice pipe. it will flow much better
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Old 08-25-2007, 02:36 AM   #5
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Added a question.
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Old 08-25-2007, 02:38 AM   #6
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they are up near the front on some of the years.
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Old 08-25-2007, 02:39 AM   #7
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and how do you undo those weird quick release clips they use? They look a little funky.
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Old 08-25-2007, 02:39 AM   #8
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6. Up near the engine, get under the car on the passenger side, it is tucked up behind the frame rail out of harm'* way. Luckily us 92/93 owners got one with quick connects on both sides.
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Old 08-25-2007, 02:40 AM   #9
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Quote:
Originally Posted by wjcollier07
and how do you undo those weird quick release clips they use? They look a little funky.
push in on the two tabs and pull.

its easy. way easier then the nut side lol
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Old 08-25-2007, 02:48 AM   #10
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2.) Catalytic converters are warranted for 80,000 minimum. I've heard of some lasting as long as 150K-200K miles before needing replacement though. Typically I think it wise to replace after about 100K.
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