Picture this: you’re enjoying a smooth drive in your brand-new Chevy Colorado or GMC Canyon, and suddenly, your power windows decide to stop cooperating. This isn’t a plot from a science fiction story but a real issue that has been identified in certain midsize truck, and Chevy Blazer EV models. Thankfully, General Motors has issued a Technical Service Bulletin (TSB), to address this perplexing issue.

Technical Service Bulletin (TSB) – #PIT6103A: Intermittent Power Windows Inoperative – Side Object Detection Indicators On – U1502 and/or U1503 Stored – (Feb 23, 2024)

Models Mentioned In #PIT6103A

The technical glitch has been noted in a specific lineup of vehicles:

Issues That Customers Experience #PIT6103A

Owners have reported a series of frustrating experiences: power windows that suddenly become unresponsive, continuous service door latch messages, side object detection indicators that are either constantly active or completely non-functional, mirrors that refuse to adjust, and rear door ajar warnings that seem unfounded. Interestingly, these issues tend to occur sporadically and are influenced by factors such as the vehicle’s battery voltage and temperature. When the battery voltage falls below 14.8 volts or the vehicle is exposed to warmth, the windows might temporarily resume function, only to become unresponsive again later.

Diagnostic trouble codes Codes U0215, U0216, U0217, U0218, U1502, U1503 may also be found.

A Chevrolet Colorado ZR2 Bison in the Johnson Valley Desert of California
A Chevrolet Colorado ZR2 Bison in the Johnson Valley Desert of California

Solutions – #PIT6103A

Investigations have pinpointed a potential flaw in the diode within the power window switches as the culprit. PIT6103A provides a clear solution: inspect the date codes on all four power window switches. The issue could be isolated to just one or involve all four switches, making it crucial to check each one.

For vehicles experiencing these symptoms, the resolution involves replacing the window switches with specific date codes.

A window switch from a Chevrolet Colorado, GMC Canyon or Chevy Blazer EV with the date code circled
A window switch from a Chevrolet Colorado, GMC Canyon or Chevy Blazer EV with the date code circled

For Blazer EV owners, switches with the following date codes require replacement: 
Drivers Door: 3245 or lower
Passenger Door: 3266 or lower
Rear Doors: 3266 or lower

For those with Colorado or Canyon models, switches with date codes require replacement:
Drivers, Passenger, and Rear Doors: Between 3156 and 3266

A Chevrolet Blazer EV in Iridescent Pearl Tricoat parked next to the pacific ocean
A Chevrolet Blazer EV in Iridescent Pearl Tricoat parked next to the pacific ocean

Warranty Coverage & Information

General Motors assures that all corrective actions are covered under the Bumper-to-Bumper Warranty. If a vehicle loaner is available, owners will receive it, and the fix will be completed at no cost.