TechLink – Page 72

Transfer Case NVH Issue During Coast Down

A transfer case noise, vibration and harness (NVH) concern may be found on some 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models equipped transfer cases RPO NQF (Electric Shift Cont, Two […]

November 20, 2019 —

UPDATE: Rattle Sound near Front of Engine

The 2019 XT4 may have a rattle sound heard near the front of the 2.0L 4-cylinder engine (RPO LSY) due to a stuck or collapsed timing chain tensioner and, as […]

November 20, 2019 —

Sunroof/Sunshade Motor Initialization

An inoperative sunroof and/or sunshade (RPO C3U) may be found on some 2018-2020 Equinox and Terrain models. The inoperative condition may be the result of the sunroof programming losing initialization. […]

November 20, 2019 —

GM Service Know-How

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]

November 20, 2019 —

2020 Bolt EV Battery Updates Add to Electric Range

Starting with model year 2020, the Bolt EV will offer an EPA-estimated 259 miles (417 km) of range on a full charge, a 21-mile (34 km) increase over previous model […]

October 31, 2019 —

New SVG Graphics in the Service Information

The Service Information (SI) now features new Scalable Vector Graphics (SVG) in some of the new SI documents and bulletins. (Fig. 4) Simply put, this means the new graphics and […]

October 31, 2019 —

Inspecting the Diesel Fuel System for Contamination

Water and other contaminates in diesel fuel will create drivability concerns and a loss of engine power. If water and/or debris is present in the fuel system, the fuel cannot […]

October 31, 2019 —

New EL-52545 TPMS and RF Tool Identifies Key Fobs

The new EL-52545 TPMS and RF tool (Fig. 17), which will be shipped as an essential tool to all GM dealerships in the 4th quarter of 2019, is designed to […]

October 31, 2019 —

Enabling or Disabling Passive Unlocking

The passive door unlocking feature, which uses the button on a door handle (Fig. 23) to unlock many 2019-2020 GM models, can be enabled and disabled using the Remote Keyless […]

October 31, 2019 —

Cover BDU Electrical Connectors Before Removing Coolant Hoses

The Drive Motor Battery, or high voltage hybrid/EV battery, on 2011-2019 Volt models (Fig. 26) is cooled or heated in order to maintain a proper temperature that aids system performance […]

October 31, 2019 —

Steering Wheel Oscillation Conditions

Some 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models may have a steering wheel oscillation, vibration or shake condition at speeds of 50–80 mph (80–129 km/h). (Fig. 33) It may be […]

October 31, 2019 —

Incorrect Fuses in Instrument Panel Fuse Block

The Automatic Engine Stop/Start system (RPO KL9) may be inoperative on some 2019-2020 Silverado 1500 and Sierra 1500 models. DTCs P3055 (DC/DC Converter Output Voltage 1 Performance) and P3056 (XXX) […]

October 31, 2019 —

Next Generation Digital Vehicle Platform Provides Foundation for Future Technology

As the technology in new vehicles continues to evolve and expand, more electrical bandwidth and connectivity has become necessary to ensure all the data-driven features can operate efficiently together within […]

October 16, 2019 —

Getting Ready for Techline Connect

Currently being rolled out to select dealerships in the U.S., Techline Connect brings together all the common resources technicians use every day for diagnosis and repairs in one simple application. The […]

October 16, 2019 —