TechLink – Page 7

First-Ever 2026 Cadillac VISTIQ Debuts

The first-ever all-electric 2026 Cadillac VISTIQ (Fig. 1) is now in production and hitting dealerships. Slotting between the LYRIQ and new ESCALADE IQ in Cadillac’s EV lineup, the VISTIQ delivers […]

May 22, 2025 —

New Rear Heating/Cooling System Provides 3rd-Row Comfort

The 2025-2026 ESCALADE IQ/IQL and VISTIQ feature a first-of-its-kind rear cabin heating/cooling system (RPO C69) for 3rd-row passengers. The separate HVAC system, controlled by using the Front Command Center touchscreen […]

May 22, 2025 —

Troubleshooting Tips for the DCA-8000P Diagnostic Charger

The GM DCA-8000P Diagnostic Charger – an Essential Tool for all U.S. dealerships – is the latest generation battery charger and tester from Midtronics that provides fast, accurate testing results. […]

May 22, 2025 —

New Part Number Released for Silverado and Sierra Half Shafts

A new half shaft part number has been released for 2019-2025 Silverado 1500 and Sierra 1500 trucks equipped with the Z71 Off-Road Suspension Package (RPO Z7X). (Fig. 20) The new […]

May 22, 2025 —

Remove Protective Films on Overhead Console During PDI on the ESCALADE IQ/IQL

During the Pre-Delivery Inspection (PDI) of the 2025-2026 ESCALADE IQ/IQL, all interior protective coverings should be removed as covered on the PDI form, including on the front overhead console. (Fig. […]

May 22, 2025 —

Diagnostic Tips for Audio and Display Screen Concerns on IOK Radios

There may be several display screen concerns and other conditions on the infotainment system (RPO IOK) of some 2022-2025 Silverado, Tahoe, Suburban, Sierra, Yukon, HUMMER EV; 2024-2025 Corvette, Silverado HD […]

May 13, 2025 —

Required Information for Restricted IOK Radios

The infotainment system (RPO IOK) on 2022-2025 Silverado, Tahoe, Suburban, Sierra, Yukon, HUMMER EV; 2024-2025 Corvette, Silverado HD and Sierra HD models is on restriction (U.S.). (Fig. 3) If the […]

May 13, 2025 —

Power Doors OTA Update Released for 2025 Escalade

2025 Escalade, Escalade ESV and Escalade V-Series models built early in the model year offered a power-assist exterior door system (RPO APD with R6W) that has power-assisted door opening and […]

May 13, 2025 —

QR Code Scanning Helps Avoid Input Mistakes When Programming Modules

When replacing a valve body or transmission on a GM vehicle, it is essential to gather Mechanical Characterization & Virtual Matching (MCVM) data from the cloud. Due to manufacturing variations, […]

May 13, 2025 —

GM Service Know-How Emerging Issues

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar previews the 2025 Corvette ZR1. (Fig. 12) Fig. […]

May 13, 2025 —

New TAC Response Requested Process

A new GM Technical Assistance Center (TAC) process has been implemented to ensure the customer is being considered when TAC is working in partnership with dealership technicians to repair customers’ […]

May 9, 2025 —

Keep Your Cool — Air Conditioning Refrigerant Leak Diagnostic Tips

All current GM vehicles are manufactured with fluorescent dye installed in the air conditioning refrigerant system. The dye mixes and flows with the A/C compressor oil to help in locating […]

April 30, 2025 —

Water Leak at the A-Pillar Body Plug

There may be several inoperative electrical features on some 2019-2025 Blazers. (Fig. 4) These conditions may include inoperative door chimes and door lamps, inoperative power mirrors or a distorted driver-side […]

April 30, 2025 —

Unlatching the Front Compartment Hood with a Weak 12V Battery

The front compartment hood on some 2024-2025 Corvette models may not fully unlatch when one of the hood release buttons is pressed if the 12V battery is weak, resulting in […]

April 30, 2025 —