1986 - 1987 GN what separates them ?

[GregGnTn]

I have a 1986 GN I had a friend ask what’s the difference between the two? All I no is the chrome grill on the 86 and they were fewer 86s than 87s. Anything else you guys no of ? Thanks Greg

 

[Thumper]

door pull straps grey vs black

Power steering reservoir cap goes on in different directions

All 86s had aluminum bumper insert supports, 87 were hit or miss with aluminum and steel

Different computer chip

Grille of course

Hvac plastic lines routed in different location over heater box, vs in front of heater box


All I can remember at this time.

 

[grass doctor]

different power seat motor

 

[boostingbuick]

No automatic climate control for 87.

 

[GregGnTn]

Cool thanks, I’m still in training...

 

[blackazz]

Didn't all 87 GN's come with posi an were hit an miss in 86.

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[Thumper]

Didn't all 87 GN's come with posi an were hit an miss in 86.

Posi was a option for both years, had to check the box.

 

[Thumper]

No automatic climate control for 87.

I believe that was a option on 84-86, but was not offered in 87

 

[fast86gn]

The 86's I've seen including my own seem to set a little lower than the 87's? Me and buddy have compared two low mile 86 and 87 cars bone stock and the 87 sets a tad higher. Anyone have info on this?

 

[salvageV6]

About a year...

 

[SCOOBY DOO]

About a year...

WINNER!!!!!!!!!!!!!!!!!!!!!!

 

[mikestertwo]

Different cruise control servos (large ones on '86 small on '87) different code knock modules (BLO on '86, HKP on '87), different wiring harness in the cabin, metal clips on the computer female plugs on '86, plastic on '87

 

[psycho6cyl]

About 2k

 

[1986 Buick GX1]

Didn't all 87 GN's come with posi an were hit an miss in 86.

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Posi was an option when I ordered my '86. I remember hearing posi was standard on T-types and GN's in '87, but that must be false.

 

[SpeedRacerX]

Didn't all 87 GN's come with posi an were hit an miss in 86.

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Posi was an option when I ordered my '86. I remember hearing posi was standard on T-types and GN's in '87, but that must be false.

Correct. My 87 GN does not have the G80 posi option and the old peg leg burnouts confirmed it. Lol. I have since corrected that with an Eaton posi.

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[Hotfoot]

Not all mine didn’t no G80 but it does have aluminum drums

 

[fast86gn]

About 2k

Not!

 

[captndave737]

My 87 came with an open diff. Post wasn’t standard. My door pull straps are grey. Were they blacken the 86?

 

[grass doctor]

My 87 came with an open diff. Post wasn’t standard. My door pull straps are grey. Were they blacken the 86?

yes they are black on 86

 

[deezdad]

The 86's I've seen including my own seem to set a little lower than the 87's? Me and buddy have compared two low mile 86 and 87 cars bone stock and the 87 sets a tad higher. Anyone have info on this?

Different spring rates for the 2 years, @Dennis Kirban could elaborate, he kinda touches on it on his website.. see the last paragraph