Window Regulator Function & Pop at Top - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**kna4977** · 01-06-2025, 10:25 PM

Think the windows on my 72 are difficult to operate and when rolling up completely at the top they pop. Both sides as if something is too wide for it's channel but makes room and goes anyway with a pop. Any ideas?

**1970cstblazer** · Yesterday, 04:43 PM

Are they original windows and steel window track channels? If the steel track channel has been replaced, it is possible that too much urethane adhesive or the window bonding strips were not trimmed properly, and they are binding on the upper outer door rubber sealing strips that snap to the top of the door skin.

window track channel:

01-06-2025, 10:25 PM	#1
kna4977 Senior Member Join Date: Jul 2006 Location: Midlothian TX Posts: 494	Window Regulator Function & Pop at Top Think the windows on my 72 are difficult to operate and when rolling up completely at the top they pop. Both sides as if something is too wide for it's channel but makes room and goes anyway with a pop. Any ideas?

Yesterday, 04:43 PM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,883	Re: Window Regulator Function & Pop at Top Are they original windows and steel window track channels? If the steel track channel has been replaced, it is possible that too much urethane adhesive or the window bonding strips were not trimmed properly, and they are binding on the upper outer door rubber sealing strips that snap to the top of the door skin. window track channel: __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels



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