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Make GMC
Model Sierra 1500 SLT 6.2 4WD
Engine G
Year 2021
Application
Recommendation
Capacity (gal)
Engine (G)
FS ENGINE GUARD FULL SYNTHETIC 0W-20 (b, c)
2.01
Transmission (Automatic)
 
2.03 / 2.89 (d, e, f, g)
Transfer box
FS SYNTHETIC MULTI VEHICLE ATF (h, i)
Differential - front (8.25 inches)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (j, k, l, m, n, o, p, q, r)
Differential - front (8.0 inches)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (s, t, u, v, w, x, y, z, ba, bb, bc)
Differential - rear (8.6 inches)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (bd, be, bf, bg, bh, bi, bj, bk, bl, bm, bn)
Differential - rear (9.5 inches & Code: SU7)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (bo, bp, bq, br, bs, bt, bu, bv, bw, bx, by)
Differential - rear (9.5 inches & Code: SU8)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (bz, ca, cb, cc, cd, ce, cf, cg, ch)
Differential - rear (9.76 inches)
 
0.291 / 0.396 / 0.423 / 0.528 / 0.647 / 0.66 / 0.687 / 2.03 (ci, cj, ck, cl, cm, cn, co, cp, cq, cr, cs)
Coolant
FS EXTENDED LIFE OAT COOLANT/ANTIFREEZE (YELLOW) (ct, cu)
3.33
Brake system
 
0.264
Air conditioning
 
(cv, cw, cx, cy, cz, da, db, dc, dd, de)
Compressor
 

Oil Change Intervals

Transmission (Automatic) (imperial)
Miles Max 45000
Brake system (imperial)
Months Max 60

Lubricant / Capacity Notes

a. Service Indicator: oil change interval varies with driving conditions. Maximum 12 months.
b. For engine oil specifications, see the oil filler cap
c. Alternative recommendations, For engine oil specifications, see the oil filler cap: EO GNM DEXR 0W-40
d. Gearbox refill after overhaul, 11.0 litres
e. Gearbox refill after overhaul, 11.6 qt
f. Gearbox refill, 7.7 litres
g. Gearbox refill, 8.1 qt
h. Change intervals, Driving Condition: Normal conditions: 97500 miles
i. Change intervals, Driving Condition: Severe conditions: 45000 miles
j. Differential refill, 1.6 litres
k. Differential refill, 1.67 qt
l. Gearbox refill, 7.7 litres
m. Differential refill, 1.1 litres
n. Differential refill, 2.45 litres
o. Differential refill, 2.6 litres
p. Differential refill, 2.5 litres
q. Transfer box refill, 1.5 litres
r. Differential refill, 2.0 litres
s. Differential refill, 1.1 litres
t. The oil level should be below the filler hole, 16.0 - 22.0 mm
u. The oil level should be below the filler hole, 0.6 - 0.9 inch
v. Differential refill, 1.16 qt
w. Gearbox refill, 7.7 litres
x. Differential refill, 1.6 litres
y. Differential refill, 2.0 litres
z. Differential refill, 2.6 litres
ba. Differential refill, 2.5 litres
bb. Transfer box refill, 1.5 litres
bc. Differential refill, 2.45 litres
bd. Differential refill, 2.0 litres
be. Differential refill, 2.11 qt
bf. The oil level should be below the filler hole, 1.0 - 19.0 mm
bg. The oil level should be below the filler hole, 0.04 - 0.75 inch
bh. Gearbox refill, 7.7 litres
bi. Differential refill, 1.6 litres
bj. Differential refill, 1.1 litres
bk. Differential refill, 2.6 litres
bl. Transfer box refill, 1.5 litres
bm. Differential refill, 2.45 litres
bn. Differential refill, 2.5 litres
bo. Differential refill, 2.45 litres
bp. Differential refill, 2.59 qt
bq. The oil level should be below the filler hole, 15.0 - 40.0 mm
br. The oil level should be below the filler hole, 0.59 - 1.57 inch
bs. Differential refill, 1.1 litres
bt. Differential refill, 2.6 litres
bu. Transfer box refill, 1.5 litres
bv. Differential refill, 2.5 litres
bw. Gearbox refill, 7.7 litres
bx. Differential refill, 2.0 litres
by. Differential refill, 1.6 litres
bz. Differential refill, 2.5 litres
ca. Differential refill, 2.64 qt
cb. Transfer box refill, 1.5 litres
cc. Differential refill, 2.6 litres
cd. Differential refill, 1.6 litres
ce. Gearbox refill, 7.7 litres
cf. Differential refill, 2.0 litres
cg. Differential refill, 1.1 litres
ch. Differential refill, 2.45 litres
ci. Differential refill, 2.6 litres
cj. Differential refill, 2.75 qt
ck. The oil level should be below the filler hole, 15.0 - 40.0 mm
cl. The oil level should be below the filler hole, 0.59 - 1.57 inch
cm. Differential refill, 2.5 litres
cn. Transfer box refill, 1.5 litres
co. Differential refill, 1.6 litres
cp. Differential refill, 2.0 litres
cq. Gearbox refill, 7.7 litres
cr. Differential refill, 1.1 litres
cs. Differential refill, 2.45 litres
ct. De-ionised water with 50% anti-freeze & >-35°F
cu. Alternative recommendations, De-ionised water with 50% anti-freeze, >-29°F: FS EXTENDED LIFE OAT COOLANT/ANTIFREEZE (YELLOW)
cv. Refrigerant, 570 - 630 g
cw. Refrigerant, 21.4 - 23.4 oz
cx. Air-conditioning compressor oil, system total, 100 ml
cy. Air-conditioning compressor oil, system total, 3.3 oz
cz. Air-conditioning condenser (only when renewed), additional capacity, 30.0 ml
da. Air-conditioning condenser (only when renewed), additional capacity, 1.0 oz
db. Air-conditioning evaporator (only when renewed), additional capacity, 30.0 ml
dc. Air-conditioning evaporator (only when renewed), additional capacity, 1.0 oz
dd. Air-conditioning compressor oil, 40.0 ml
de. Air-conditioning compressor oil, 1.4 oz