1977 1978 1979 Cadillac Olds GM Trunk Pull Down ULTIMATE BREAKDOWN & TROUBLESHOOTING STEPS GUIDE!!
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- Опубліковано 3 лис 2024
- A full breakdown of the trunk pull down setup on the 1977-1979 GM Cadillac Olds Buick models for components and troubleshooting. This year range had a very specific setup for the trunk pull down motor/transmission/latch/switch which is identified here along with determining a bad switch or other components. Most other videos on YT reference 80s GMs/Lincolns or Chevy sports car models which have different component setups.
The specific switch replacement part for this generation is GM Part No. 20021520, which is extremely rare to find.
The Switch Harness wiring is as follows: Black (ground), Pink (trunk open dash telltale), Orange (latch up position), White (latch down position).
The Motor Harness wiring is Black (ground) and Purple (power).
The Latch Transmission wiring is the thick blue wire with white caps leading from bottom of latch Transmission to motor mount harnesses.
Hope this helps you!
Was able to source a replacement switch so a follow-up video should be done in next few weeks with the result.
What I did was I took it off and I manually turned latch to the base no problem no electric pull just shut the trunk manually. To bye a knew one is like 400. Shuts beautifully bye hand amen
Was the height of the latch on the base already properly set?
How do u take apart the fuse at the pull down motor
Installed the new switch, i continue to get that intermittent clicking (13:26 mark) when it is plugged in. Anyone have ideas?
The pull down broke some one slammed the truck to hard and cracked it so I got the pull down all the way down so I do it manually but to button in the glove box still works the pull down are very expensive like 450- I would never unless I’m ritch so know I just slame it shut
Yea this is such a a weak point in this generation. All the examples I see at car shows have the pull down removed with just a permanent latch
Where can I get the electric latch pull down for my 1977 Cadillac
The motorized latch that moves up and down? A u-pull it yard would be your best best
I think it was caddy daddy or just Google it they are very expensive like I said take the motor off turn it to the shut position good to go they are very cheaply made someone slammed my trunk and the plastic part broke 😢but all good know the push button in the glove box still works push it and the trunk opens by it self I’m good with that easy fix. 😊
These aren't worth messing with. Bad idea and a poor design on the switch. Put the latch in the correct position and unplug the switch. You won't miss it at all.
Thanks! I had everything in place and it was working for a bit, but the clicking came back so I did what you suggested. Not ideal but operable. When I have more time to troubleshoot the leads I will report back