How to Check Lubricant
2500HD with 6.0 L
All Other Series and Engines
To get an accurate reading, the vehicle should be on a level surface.
• For all 4.3 L, 4.8 L and 5.3 L 1500 Series applications, the proper level is 1.0mm to 19.0mm (0.04 in to 0.7 in) below the bottom of the fill hole, located on the rear axle. Add only enough fluid to reach the proper level.
• For all 6.0 L and 6.2 L 1500 Series applications, the proper level is from 15mm to 40mm (0.6 in to 1.6 in) below the bottom of the fill plug hole, located on the rear axle. Add only enough fluid to reach the proper level.
• For all 6.0 L 2500HD Series applications, the proper level is from 0mm to 13mm (0 to 0.5 in) below the bottom of the fill plug hole, located on the rear axle.
Add only enough fluid to reach the proper level.
• For all 6.6 L Duramax Diesel 2500HD Series applications and all 3500 Series applications, the proper level is from 17mm to 21mm (0.6 in to 0.8 in) below the bottom of the fill plug hole, located on the rear axle. Add only enough fluid to reach the proper level.
See also:
Safety Chains
Always attach chains between the vehicle and the trailer. Cross the safety chains
under the tongue of the trailer to help prevent the tongue from contacting the road
if it becomes separated from t ...
Tire Rotation and Required Services Every 12 000 km/7,500 mi
Rotate the tires, if recommended for the vehicle, and perform the following services. See Tire Rotation on page 10‑68.
• Check engine oil level and oil life percentage. If needed, change engi ...
Exterior Mirrors
Exterior Mirrors
Vehicles with outside power mirrors and foldaway mirrors have controls located on the driver door.
1. Press (A) or (B) to select the driver or passenger side mirror.
2. Press t ...