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Bulbs are expensive halogen bulbs. That dash is the only car listed using them. Last ones I bought were @ $10 each. You just about need to take the whole dash out to change them. If you can find a lamp extractor tool you can get them out with only the bezel off. Sometimes the sockets are...

Last I heard @ $140 from PepBoys. They are new not GM. I paid $80 years ago and have gotten 3 now! JS

Read the stuff at thirdgen.org The camaro guys are low buck DIY's and have tons of links on chips. js

You'll know you have the right rack if the letters on the bottom match. That is how you tell them apart. I've seen a listing somewhere that has all of them. Don't get a cheap rebuild, make sure both of the inner tierods have been replaced. If you just want to get the tierod loose from the...

My advice after 10 years with my 87. ONLY get an alternator with a lifetime warranty!!! I have put 4 on. One before I got the car was a genuine AC Delco reman. It lasted just over 2 years the warranty; half that time it sat in the driveway while I was in Korea. It made 3 months in the...

Firestone SZ50 are made in japan, they're Bridgestone. I would put another set on my 87 if they hadn't quite making them in 255-50-16. They have good grip in both wet and dry. JS

The 2 piston brakes started in 88. The spindles also changed. The std. 12" rotor bracket won't bolt up to your early spindle. The cheapest and bang for the buck upgrade is to C5 brakes, you need 17" wheels. 13" J55 C4 brakes will fit under some 16" wheels but rotors are twice C5's and you...

The booster diaphram has a cut in the edge. I took it apart and looked at it. I've searched the web and found a wholesale supplier. Has anyone found kits to repair a booster? All I really need is the diaphram. I've had it apart and it can be changed and put back together in 20 min. Not...

You need a meter. The dash reading can be off substantially. A new hot battery usually reads over 13vdc Most good alternators will charge to about 14vdc. If you have less than 13vdc at 1500rpm, HOUSTON WE HAVE A PROBLEM! When you are convinced the battery is good and alternator is charging...

I have read many times GM reboxes the bearings. I've have the pep boys bearings in my 87, they have nearly as many miles on them as the factory bearings when they were totally shot. AND they have a lifetime warranty. New bearings will make a tremendous difference in how the car handles, it...

Fuel pressure check done? 89 doesn't have a cold start injector. Try turning the key to run then off, then back to run, off, then run again and try to start it. That might get the entire fuel rail full and up to pressure. If you just turn it to run you always hear the pump come on right...

I think you need to check 2 things: 1. when the car is idling unplug the IAC. Does it stall? If it does there is a screw up there under a plug for minimum idle speed. Get a book and adjust it. The car should not die, should slow to @ 500rpm 2. Check throtle body for build-up. Get carb...

From what I see all the info on the build sheet is on the service parts list sticker on the center console door. If it's not there on an 87 the door's been changed. JS

Try the flush and fill, maybe do it a couple of times until you get fairly clean looking fluid since you won't get it all with just changing what's in reservoir. Sometimes a seal will bind with dirty fluid. If the first try doesn't get it try different stuff. Especially with the time, effort...

Overwatt bulbs can cause problems. If the bulbs are over 50w you might want to install a set of relays. Relays are the only way to overwatt headlights that use H4 bulbs. The stock setup runs all the current for the lights through the switch. JS

Chip, you said it there. Where did it come from? Change it back to the stock prom and see how it runs. I have zero experience with aftermarket proms. What I read on the forums, unless you spend days and have know how you can go backwards easy. A lightly moded MAF TPI will work with the...

About any C4 with over 80k miles has had it done or needs it. I've done my 87 twice. The first time it will take you the good part of a day. The last time I did it in about 3 hours and was looking at other stuff while I was under there. If you do a search there is a good set of pictures of...

Put a vacuum gauge on it and see if it has more than 18" at idle. If it's low it very well may have a leaking intake gasket. Were the heads milled? How about a fuel filter? It might have gotten trash in it while the car was sitting up. Are you all setting the timing the right way? You have...

You can check it just like anything else. Unplug the tan wire connector up by the distributor. If you bump it much, stock is 6 btdc, it will ping and the ESC will start pulling timming back and it will lay down. If the tires are new and sticky they might be hooking up! My SZ50 are about gone...

Man, DON'T get a ZF-6! Those things are a fortune to get fixed! Keep reading and you will find the horror stories. They are real touchy about clutch adjustment, ect. Follow Ken's advice, he's been there... JS