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Weak tonneau hinge?

Old Sep 22, 2025 | 08:13 PM
  #1  
Paintchips97's Avatar
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From: IL
Car: '84 TA, '88-89 GTA convertibles
Engine: 406ci SBC, LB9, L98
Transmission: T56, 700r4s
Axle/Gears: 3.73 10 bolt, 3.27 9 bolts
Weak tonneau hinge?

Hello! As the title states, the tonneau cover on my '89 GTA is weak compared to the other 3 convertibles I've owned. On a slight incline, or with a slight drafty wind, the cover will close on me while raising or lowering the top. Is this something that can be adjusted?
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Old Oct 12, 2025 | 10:41 AM
  #2  
84 1LE's Avatar
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Joined: Nov 2002
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From: Oyth
Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
Re: Weak tonneau hinge?

Mine's the same way, though not as bad, but it lifts about 6" when i pop it, then drops to about 2". Anyway, i tried "adjusting" the 4 bolts by the torsion bars, but it mostly affects the tonneau/trunk gap. Wish i had better info.
Car looks really mint btw.
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