Monthly Archives: June 2017

Top Questions on New Models

Many new GM models have a number of innovative features that enhance the safety and convenience of the vehicle. But some of these features may be unfamiliar to customers and, as a result, they may bring their vehicle into the … Continue reading

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Loss of Communication while Viewing HMI Data List

While performing service procedures involving the Human Machine Interface (HMI) module, viewing the HMI data parameters using GDS2 may cause a temporary loss of communication with the scan tool. This condition may be found on 2016 ELR; 2016-2017 ATS, CTS, … Continue reading

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Hard Shifting into 1st Gear or Reverse

Hard shifting conditions when shifting into 1st gear or Reverse may be found on some 2014-2018 Silverado, Sierra and Corvette models equipped the 4.3L V6 engine, 5.3L V8 engine or 6.2L V8 engine (RPOs LV3, L83, L86, LT4) and 2015-2018 … Continue reading

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Diagnostic Tips for Harsh Shifting Transmission Conditions

Harsh shifting conditions and delayed garage shift engagements may be noticed on some 2017 Colorado, Canyon, Express, Savana; 2016-2017 ATS, CT6, CTS, Camaro; 2015-2017 Escalade, Silverado, Sierra, Yukon Denali, and Corvette models equipped with the 8L45 or 8L90 automatic transmission … Continue reading

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Preventing an Inadvertent Remote Start during Service

With the growing popularity and availability of GM models equipped with remote start and the OnStar mobile app, it’s a good time for a reminder that there is potential for personal injury to technicians or damage to a vehicle during … Continue reading

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The All-New 2018 Chevrolet Traverse

The all-new 2018 Traverse (Fig. 1) features a bold design, seating for up to eight passengers, and new technologies in six trim levels: LS, LT, RS, Premier, Redline, and High Country.   Fig. 1   A new 3.6L V6 engine … Continue reading

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New GM Dealer Infrastructure Guidelines Adopt Good, Better, Best Format

GM has released new Dealership Infrastructure Guidelines (DIG) and introduced a new document, Dealership Security Guidelines (DSG). The Dealership Infrastructure Guidelines are updated periodically to stay current with technology that should be in place at the dealership, including Personal Computer … Continue reading

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DC Fast Charger for EV Charging

The amount of time it takes to fully charge the 2017 Bolt EV with a depleted high voltage battery depends on the type of charger being used. With the 120-volt portable charge cord at the default 8-amp setting, it takes … Continue reading

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Turning On the Wi-Fi Hotspot

The Wi-Fi hotspot may not appear to be working on some 2018 Sonic, Trax, and Terrain models equipped with infotainment system RPO IOR (3.X Low HMI, Midlevel Connectivity 3.X).   On infotainment system RPO IOR, there are two settings that … Continue reading

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