2019 Chevy Traverse Rear Window Won’t Go Up? Here’s the Real Fix Most People Miss
Introduction
You ever run into a situation where a power window acts up—but only from one switch? That’s exactly what we’re dealing with here on a 2019 Chevrolet Traverse, and it’s a perfect example of how proper diagnosing car problems can save you from wasting time and money.
The customer complaint was simple: the left rear window wouldn’t go back up properly using its own switch, but it worked fine from the driver’s master control. Sometimes it would respond, but only if you wiggled the switch just right.
Now to the average person, that might sound like a bad motor or regulator. But to someone experienced in automotive troubleshooting, those symptoms tell a very different story.
Let’s walk through it step by step.
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Vehicle Overview
We’re working on a 2019 Chevrolet Traverse, a mid-size crossover that uses a fairly straightforward power window system at the rear doors. Unlike some higher-end vehicles, the rear window switches operate as direct inputs controlling motor polarity.
In simple terms, the switch itself plays a big role in making the window go up or down.
Vehicle Concern
Here’s what the customer reported:
Left rear window goes down normally
Window struggles or fails to go up using the rear door switch
You can “wiggle” the switch and sometimes get it to work
Window works perfectly from the driver’s master switch
These symptoms are gold when you know how to read them.
Initial Inspection
First thing I always do is verify the concern myself. No assumptions.
Sure enough:
The window dropped down immediately when using the rear switch
Bringing it back up? Intermittent at best
Slight pressure or movement on the switch would sometimes make it respond
Then I checked operation from the driver’s master switch—and the window went up and down flawlessly every time.
That right there is a major clue.
Codes (if applicable)
No trouble codes were present—and that’s not surprising.
This is a simple electrical control issue. There’s no module actively monitoring switch integrity here, so you’re not going to get a diagnostic trouble code pointing you in the right direction.
That’s where real-world automotive troubleshooting skills come into play.
Diagnostic Process
This is where a lot of people go wrong, especially DIYers or less experienced techs. They jump straight to replacing the motor or regulator.
Let’s slow it down and think logically.
If the window motor or regulator were faulty, you’d expect:
Slow or strained movement
Noise or binding
Failure in both directions
Same issue from both switches
But we don’t have any of that.
The motor works perfectly when controlled from the driver’s switch. That tells us:
The motor is good
The regulator is good
Power and ground circuits are intact
The wiring between the driver switch and the motor is working
So now we isolate the problem area.
The only variable left?
The left rear door switch itself.
But we don’t stop there—we confirm it physically.
I compared the feel of the left rear switch to the right rear switch (which was working normally). The difference was obvious:
The detent (that “click” feeling) was worn out
The switch felt loose and inconsistent
The surface of the switch showed signs of chemical damage—likely from a spill or cleaner
Now think about how these switches work internally.
They rely on small contact points and spring-loaded mechanisms to complete circuits. When those wear out or get contaminated, especially on one direction (like “up”), you’ll get exactly this kind of intermittent behavior.
That “wiggle it and it works” symptom? Classic worn contact issue.
Key Findings
After testing and inspection, here’s what we confirmed:
Window motor operates normally
Regulator shows no signs of mechanical failure
Wiring is intact and functional
Driver’s master switch controls the window perfectly
Rear switch shows physical wear and inconsistent operation
No voltage drop testing or advanced circuit tracing needed here—the failure is isolated cleanly.
Final Diagnosis
The issue was a failed left rear window switch.
More specifically:
Internal contact wear
Damaged detent mechanism
Likely contamination from a spilled liquid or chemical
Replacing the switch resolves the problem completely.
Common Causes
This kind of issue is more common than people think, especially in family vehicles like the Traverse.
Here are the most frequent causes:
Worn internal contacts from repeated use
Liquid spills (coffee, soda, cleaning products)
Dirt and debris entering the switch assembly
Physical wear of the detent mechanism over time
Unlike motors or regulators, switches are often overlooked—but they fail more often than you’d expect.
Lessons for Buyers / DIYers
This case is a great example of why understanding symptoms is critical when diagnosing car problems.
If you’re a DIYer or someone shopping for a used vehicle, here are some practical used car inspection tips:
Always test every window from every switch. Not just the driver’s door. A failing secondary switch can easily go unnoticed.
Pay attention to how switches feel. A worn or “mushy” switch is often a warning sign of internal failure.
Don’t assume the worst. A window that won’t go up doesn’t automatically mean a motor or regulator—those repairs are far more expensive.
Watch for signs of spills. Sticky residue, discoloration, or worn lettering on switches can indicate contamination that leads to failure.
And most importantly—learn to isolate the system. If something works from one control point but not another, you’ve already narrowed your problem significantly.
That’s the kind of thinking that separates parts changers from real diagnosticians.
Don’t Get Burned on Your Next Used Car
If you’re thinking about buying a used car—or even if you already have one—this is exactly the kind of problem that can slip through the cracks and cost you big money later.
After 35+ years in the automotive field, I’ve seen firsthand how often people end up with vehicles that have hidden issues just like this.
That’s why I put together a simple Used Car Guide to help you understand what to look for and how to avoid making a costly mistake.
It’s a quick, practical guide designed to give you the right mindset and approach before you buy.
👉 https://stan.store/BobbyWhiteside
Disclaimer
Disclaimer: Some links in this post may be affiliate links. I may earn a small commission at no extra cost to you. I only recommend tools I personally use and trust in real-world diagnostics.
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