09/24/2026
❄️ Another happy customer back on the road in total comfort!
We recently welcomed a 2014 GMC Sierra Denali into the shop for an A/C diagnosis. The owner noticed the compressor wasn't engaging, warm air was blowing on the driver side, and he needed the truck turned around quickly.
Our diagnostic check pulled code B1325 (Control Module Power Circuit Low Voltage). Our tech findings revealed:
* A failed A/C compressor clutch and worn A/C belt
* A leaking low-side service port
* An aging battery with heavy terminal corrosion, causing low system voltage that directly ruined the HVAC actuator function
Once the customer gave us the green light, our team got straight to work:
* Installed a brand-new A/C compressor, drive belt, and fresh service ports
* Replaced the failing battery and cleaned the terminal connections to restore proper voltage
* Replaced the malfunctioning under-dash blend door actuators
The HVAC system passed every test with zero active trouble codes! The vents are now blowing a crisp 43.9° on the driver side and 43.0° on the passenger side, with full heating restored to 146°+ across both zones. 🧊
Big thanks to our customer for trusting us to get the family ride dialed in right!