New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in.
But it will perform better in the long run if you follow these guidelines:
• If you have all-wheel drive, keep your speed at 88 km/h (55 mph) or less for the first 805 km (500 mi).
• Do not drive at any one constant speed, fast or slow, for the first 805 km (500 mi).
Do not make full-throttle starts. Avoid downshifting to brake or slow the vehicle.
• Avoid making hard stops for the first 322 km (200 mi) or so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings.
• Do not tow a trailer during break-in. See Driving Characteristics and Towing Tips on page 9‑45 for the trailer towing capabilities of your vehicle and more information.
Following break-in, engine speed and load can be gradually increased.
See also:
Headlamp High/Low-Beam Changer
Headlamp High/Low-Beam Changer: Push the turn signal/lane change lever away from you to turn the high beams on.
Pull the lever toward you to return to low beams
This indicator light turns on in t ...
OnStar Mobile App
With an iPhone® or Android™-based mobile device, an OnStar mobile app can be
downloaded. The vehicle can be remote started, if equipped, or the doors can be
unlocked from anywhere there is cell ...
Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck
capability combined with greater off-road versatility. It is highlighted by a
bold exterior design, enhanced all-terrain ...





