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I have a1987 GN with 67,000 miles. I bought it in 1988. It is unmolested other than the fuel injectors and computer chip. Everything is original and perfect condition. It saw the rain 3 times in its life, it is garage kept. The paint is very shiny but is has small cracks all over the hood...

I Read all the posts on headlight bezels but still have a question. I have my 87 GN since 1988, 65k and driven on wet roads 3 times, unmolested and still has the great cracking paint and I want to paint the bezels. Some posts say flat black some say satin black and some say sem trim black. On my...

My third powermaster is starting to fail and I am going to convert to vacuum brakes. Which g body brake booster should I use, the 9" dual diaphragm or the 10 3\4" single one. Will both of these fit my 87 GN. If they both fit, which one looks the best installed. I am going to send the old...

Hi: One quick question about driveline vibration. I have read all the post about vibrations and think I have it narrowed to tail shaft bushing or pinion bearing. The question I have, can you feel the roughness of a pinion bearing by turning the pinion shaft. I removed the driveshaft and...

Hi Today I checked the setting on my Cam sensor and noticed I only had 5 volts to the sensor. If I am correct their should be 7 volts. Do I have a problem somewhare or is this ok. 87 gn 62,000 miles bone stock. Thanks Steve

I have 87 GN with 62,000 miles since new. It is bone stock and only has seen the rain three times. My question is the hood has a lot of small paint cracks in it and some paint flaking above the wheelwell on the right quater pannel. If i get these things repaired is it going to decrease the...

I am overhauling my A\C in my 87 gn. I am switching to r134a,changing the compressor,accumulator,hoses,orifice tube and o-rings. Flushing system. I did some searching on this fourm and some people use the GM white orifice and some people use the Ford blue orifice. Which one is better and...

1987 GN 65,000 miles completely stock and unmolested. I need a new exhaust system from the cat back. I checked with GM but no longer avalialbe. What are my options? Thanks Steve

Can someone tell me the stock 1987 GN 15" wheel specs. (rim width,bolt pattern,and back space). I have a set on my sons 78 Malibu wagon and want to get a set of mags so I need these sizes. Thanks Steve

Just got my GN (had from new)hooked up to my lap top and want to know the optimal readings of my sensors (blms,o2,maf,iac,int) at idle, mid range, and wot. The mods I have on the car are green strip injectors,adj fuel pressure regulator,hot wired fuel pump,adj wastegate, casper dial chip(burned...

I need an opinion on which fuel injectors I should have cleaned. I have an 87 GN with 60,000 on the clock with a leaky fuel injector. The motor is stock except for Tomco 30lb injectors, a new cam 204/194 (I wiped the #3 exhaust lobe on thestock cam), adj fuel regulator,hot wired HP fuel...

I have an 87 stock GN. It needs a cam. Anyone run 204/214 cam? Any comments;advantagesor disavantages? Thanks Steve

I found my 15psi boost knock today. Partially wiped #3 exhaust cam lobe. Car is stock with 59,000 miles. hot wired hp fuel pump caspers ultra chip adjustable fuel pressure regulator This car is a around town driver and on the inter state. I don't want to sacrifice driveabilty for...

I have been chasing around a 15 lb boost knock and I am at the end of my rope. This is an 87 GN with 59,000 miles. I is stock except for 30lb green stripe injectors and an ultra chip. Scan readings are good. Changed the coil pack, fuel pump,fuel filter, hot wired fuel pump,tightened all...

I been having a problem with my 87 gn cutting out at the top of first gear at wot. It cuts out for a split second and runs ok. I checked the battery cables for header burns and wear through to the frame today. everything looked good. I took a test ride when i got on it it cut out again...

Does anyone in the Bethlehem, Center Valley area of Pa. have turbo link or scanmaster that can help me with slight knock problem. Steve

Hello I am new to this board and have some questions about scan tools and problems with my 87 GN. I have an 87 GN with 60,000 miles on it.(bought in 88) The mods I have on it are green strip 30lb injectors, Casper ultra chip 3.01 , new valve springs, hp fuel pump, and adjustable fuel...