Tightening Wheel Lug Nuts
{CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to become
loose and even come off. This could lead to a
crash. Be sure to use the correct wheel nuts.
If you have to replace them, be sure to get new
GM original equipment wheel nuts.
Notice:Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque speci cation.Tighten the wheel lug nuts
rmly in a crisscross
sequence as shown.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
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ApplicationCapacities
English Metric
Manual Transmission – Z51 4.2 qt 4.0 L
Manual Transmission – Z06 4.5 qt 4.3 L
Wheel Nut Torque 100 lb ft 140Y
All capacities are approximate. When adding, be sure to ll to the approximate level, as recommended in this
manual. Recheck uid level after lling
Engine Speci cations
Engine VIN Code Transmission Spark Plug Gap Firing Order
6.2L V8 (LS3) WAutomatic
Manual0.040 inch
(1.016 mm)1–8–7–2–6–5–4–3
7.0L V8 (LS7) E Manual0.040 inch
(1.016 mm)1–8–7–2–6–5–4–3
Engine Data
Engine Horsepower Torque Displacement Compression Ratio
6.2L V8 without
option NPP430 5900 rpm 424 lb ft @ 4600 rpm 6.2L 10.69:1
6.2L V8 with
option NPP436 5900 rpm 428 lb ft @ 4600 rpm 6.2L 10.69:1
7.0L V8 505 6300 rpm 470 lb ft @ 4800 rpm 7.0L 11.00:1
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