GMC T-Series 1999, Owner'S Manual

Page: 258 / 344

yellow blue
6-72
Replacement Bulbs
It is recommended that you use an AC
R
type bulb
whenever you need to replace one.
Before you replace any bulbs, be sure that all lamps are
off and the engine isn’t running.
Capacities and Specifications
Replacement part numbers listed in this section are
based on the latest information available at the time of
printing. They are subject to later change. If a part listed
here isn’t the same as the part in your vehicle when it
was built, or if you have any questions, please contact
your GM Truck dealer.
Engine Serial Number Location
Model Location
7.2L L6 Cylinder block, left rear upper corner, . . . . . .
below cylinder head.
7.4L V8 Cylinder block, above timing . . . . . . . . . . . .
chain cover, behind water pump.
Engine Identification and Data
Engine RPO LG5 LP4/L21
Engine Type L6 6.0L V8
Fuel System HEUI SPFI
Firing Order
1
-
5
-
3
-
6
-
2
-
4 1
-
8
-
4
-
3
-
6
-
5
-
7
-
2
For tune
-
up information on gasoline engines, refer to the
Vehicle Emission Control Label on the air cleaner
assembly. On diesel engines, see the Caterpillar
R
Operation & Maintenance Manual in your vehicle.
Wheel Nut Torque
Refer to “Tightening the Wheel Nuts” in the Index for
wheel nut torque information.
Cooling System Capacity
Model Quarts (Liters)
7.2L 32.0 (30.3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
with automatic transmission 30.0 (28.4) . . . . . . . . . .
7.4L 26.0 (23.7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
with automatic transmission 24.0 (22.7) . . . . . . . . . .
Above capacities (volumes) are approximate.