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 […]
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 […]
Ever since the Tire Pressure Monitor System (TPMS) was federally mandated (U.S.) in 2008, radio frequencies have been used on GM models to communicate with the system and to determine […]
As colder winter weather rolls in, GM recommends using TOP TIER Detergent Diesel fuel in 2014-2020 GM models equipped with a diesel engine in order to maintain optimal engine performance. […]
Some 2019 Silverado 1500, Sierra 1500; and 2020 Silverado and Sierra models may have a discharged battery, the ignition may not turn off, a Shift to Park message may display […]
There may be an intermittent Shift to Park message displayed on the Driver Information Center (DIC) when the vehicle has been shifted to Park and the ignition has been turned […]
There may be a whistle or squeak sound heard coming from the engine area on some 2019-2020 Blazer models equipped with the 3.6L 6-cylinder engine (RPO LGX). The sound may […]
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 […]
Techline Connect — GM’s latest tool that brings together diagnostic information and vehicle data in one easy-to-use application — is currently being rolled out by state to GM dealerships (U.S.). […]
Some 2018-2019 Enclave and Traverse models may have DTC U1345 (Engine Control Module LIN Bus 1) set along with an illuminated Check Engine lamp. If these conditions are found, there […]
A slight rattle sound may be heard near the B-pillar on the driver’s or passenger’s side of some 2019-2020 XT4 models. The sound may be due to a design variance […]
A “Climate Off” pop-up message may display on the infotainment screen even though the HVAC system is fully functional on some 2019 CT6, XT4, Blazer, Camaro, Colorado, Equinox, Malibu, Silverado […]
There may be several engine performance conditions on some 2019 Silverado 1500 and Sierra 1500 models equipped with the 2.7L 4-cylinder engine (RPO L3B), including no start, no crank, engine […]
Several exhaust leak conditions, including a rattle or exhaust noise, or catalytic converter failure on Bank 1 may occur on some 2018-2019 Enclave and Traverse models equipped with the 3.6L […]
If fuel injector driver DTCs are found on some 2019 Silverado 4500 MD, 5500 MD, 6500 MD models equipped with the 6.6L Duramax diesel engine (RPO L5D), it may be […]
Some 2013-2019 ATS, Impala, Malibu; 2014-2019 Regal, CTS; 2015-2019 Envision, LaCrosse, Colorado, Acadia, Canyon; 2016-2019 CT6, Camaro; 2017-2019 Traverse, Terrain; 2019 Blazer and Equinox models equipped with the 2.0L 4-cylinder […]
New Duramax Diesel 3.0L 6-Cylinder Engine Powers Up Silverado 1500, Sierra 1500
Diesel Exhaust Brake Operation
2020 Camaro Model Updates
Possible Engine Oil Contamination Conditions
Low Oil Pressure Conditions
Multiple DIC Messages and Loss of Low Speed LAN Communication
Auxiliary Transmission Fluid Pump Performance
Updated Engine Oil Capacities Chart
GM Service Know-How
New Camaro ZL1 eLSD Drag Race Calibration Available
Get Instant Field Action Notifications with the Certified Service Mobile Toolbox App
Global In-Vehicle Technology Library Link in SI Provides Access to New Model Information
Changing the MDI 2 Selection in TIS2Web
Rear Seat Bolt Tightening Sequence
Lack of A/C Performance in High Ambient Temperatures
Multiple Electrical Conditions, Illuminated Instrument Cluster Warning Lamps, and DIC Messages
Rear Brake Squeal Sound
Bluetooth Microphone Poor Performance
EL-52545 TPMS and RF Tool
PC & Diagnostic Bundle
Diagnostic Charge
Battery Station
Tips for Warranty Reprogramming Events
The Active Fuel Injector Tester (AFIT) Spark Ignited Direct Injection (SIDI) Diagnostic Kit, essential tool CH-47976, was released several years ago for port and direct injected engine applications (Fig. 7) […]
GM has recently updated the Service Programming System (SPS) with a new method of selecting a J2534 tool in TIS2Web. A J2534 tool (MDI, MDI 2, or other J2534 device) […]
2019 GM models feature a variety of technology and new systems that may be unfamiliar to technicians and service consultants in GM dealerships. Following are several videos highlighting new features […]
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