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My intake manifold has two broken bolt holes where the upper plenum attaches. I've been searching for a new one but the only one I can find that actually fits is the Champion ported intake for $1,300 but all sellers state that my GOOD core must be sent in first before they will even send one...

I've been looking for an aluminum transmission pan for my 86 GN. I can find them for every GM transmission ever made for ~$60 to $150 , until I search for 200R4 and then the price goes up to $350 to $600. What is the deal? They are no bigger than the others, smaller is some cases.

I installed an aftermarket LS style 102mm throttle body and after the first test ride of only 16 psi of boost I heard a squeal and went back home to check it out. After only one low boost pull the throttle body is leaking around the throttle shaft. Has anyone else had this problem and/or how do...

I've been having problems with a vacuum leak and have been unable to find it. I took off the upper plenum and noticed that the aftermarket plenum for the 70mm TB has no provision for the forward port that goes down into the intake to be sealed off. Because of this, the piece of seal around the...

I'm having troubles with a super high idle on my 1986 GN and I can't find a cause for it. I tried resetting the IAC and with the throttle blade completely closed (idle screw backed out completely) it idles at 1,700 RPMs and then cliimbs to a little over 2,000 RPMs. At this high idle it is...

I put a Dakota HDX Digital dash in my 1986 GN and everything works except the cruise control. Before I put the dash in it worked fine. Has anyone put one of these in and have the cruise working?

My 86 GN died last night while idling. It had no spark but was running good just before. I found that the Cam Sensor and Coil pack were good and then found the CCCI fuse had blown. I replaced the fuse and it started right up again, but now it keeps breaking down under acceleration. Any ideas...

What is going on with Gnttype.org? Most of the links are dead, all e-mail links to the webmaster and founders bounce and private messages go unanswered..

I have a 1986 GN and my steering is very sloppy. If the road has any contours to it, the car will follow it. I tried a suggestion to tighten up the steering box and it made no difference so I ordered a new box. With the new steering box, different rims and tires, and a front end alignment it...

My 1986 GN is in pretty good shape paint wise except for the urethane fill behind the front bumper and just ahead of the rear bumper. All 4 of these are grey and cloudy looking. I have waxed them and made them shiny only to have them grey and cloudy by the next day. I have also tried cleaning...

Years back I bought a PATC Raptor 200R-4 to replace the transmission in my 1986 GN. Before I bought it I had asked them multiple times if this was an exact replacement with no modifications necessary and they said it was. After being installed the mechanic said that there was an extra wire with...

Does anyone still sell the master cylinder for the PM? All I can find is master cylinders for vacuum or hydroboost conversions.

Kirban sells both a Hydratech and a CPB Hydroboost brake system. Any body have either of these or know which is better?

Is there any way to estimate what horse power and torque you have by the upgrades you have done? I'm just curious where I might be and don't have the money to spend to put it on a dyno.

I have an 86 GN with the Powermaster. It has a new accumulator and pressure switch. There is no warning light on but the pump motor runs continuously. There appears to be foam in the brake fluid, so does this mean the pump has an internal leak so pressure cannot build high enough? If I couldn't...

Did Caspers go out of business?

I have an 86 GN and the brakes are acting up. If I hit the pedal for an emergency stop there is a good 3 second delay before the brakes grab. What would be causing this delay? Other than that the brakes work well, no leaks, and fluid level is fine.

Anyone who purchased lifetime Anti-Rust protection or Fabric protection through GM Goodwrench service center in the 80’s are NO LONGER covered by this policy. GM has cancelled the program without notifying any of their customers. I tried to get rust proofing material replaced under warranty on...

My goal is to get regular unleaded fuel down to about $1.35/gallon (where it should have been all along). Lets see how much support everybody in the Buick community can get from friends and relatives to make this work. Information is located at: YouTube - ‪Unleaded Gas for $1.35/gal.wmv‬&rlm...

If I use my left blinker, it flashes normal. If I use my right blinker, it flashes once every 20 seconds! All bulbs are working and this just started to happen today. Any ideas?:confused: