2008 GMC SIERRA wheel

Rear Towing (Rear Wheels Off the
Ground)
Two-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle from
the rear:
1. Drive the vehicle onto the dolly.
2. Firmly set the parking brake. SeeParking Brake on
page 2-49.
3. Put the transmission in PARK (P).
4. Follow the dolly manufacturer’s instructions to attach
and secure the vehicle being towed to the dolly and
then the loaded dolly to the tow vehicle. Make sure
the wheels are straight before towing.
Use an adequate clamping device to ensure that
the front wheels are locked into the straight position.
5. Release the parking brake only after the vehicle
being towed is rmly attached to the tow vehicle.
6. Turn the ignition to LOCK/OFF.
Four-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle from
the rear:
1. Drive the vehicle onto the dolly.
2. Firmly set the parking brake. SeeParking Brake on
page 2-49.
3. Put the transmission in PARK (P).
4. Follow the dolly manufacturer’s instructions to attach
and secure the vehicle being towed to the dolly and
then the loaded dolly to the tow vehicle.
Use an adequate clamping device to ensure that
the front wheels are locked into the straight position.
{CAUTION:
Shifting a four-wheel-drive vehicle’s transfer
case into NEUTRAL can cause your vehicle to
roll even if the transmission is in PARK (P).
You or others could be injured. Make sure the
parking brake is rmly set before you shift the
transfer case to NEUTRAL.
5. Shift the transfer case to NEUTRAL. See
Four-Wheel Drive on page 2-36.
4-54

Use one of the following charts to determine how much
your vehicle can weigh, based upon your vehicle
model and options.
C-1500 Regular Cab
Standard Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.3L V63.23
3.734,800 lbs (2 177 kg)
5,300 lbs (2 404 kg)9,500 lbs (4 309 kg)
10,000 lbs (4 536 kg)
4.8L V83.23
3.735,200 lbs (2 359 kg)
7,200 lbs (3 266 kg)10,000 lbs (4 536 kg)
12,000 lbs (5 443 kg)
5.3L V83.42
3.737,200 lbs (3 266 kg)
8,200 lbs (3 719 kg)12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-58

C-1500 Extended Cab
Standard Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR+
4.3L V63.23
3.734,300 lbs (1 950 kg)
4,800 lbs (2 177 kg)9,500 lbs (4 309 kg)
10,000 lbs (4 536 kg)
4.8L V83.23
3.734,700 lbs (2 132 kg)
6,700 lbs (3 039 kg)10,000 lbs (4 536 kg)
12,000 lbs (5 443 kg)
5.3L V83.42
3.736,700 lbs (3 039 kg)
7,700 lbs (3 493 kg)12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
6.0L V8 3.73 8,800 lbs (3 992 kg) 14,000 lbs (6 350 kg)
6.0L V8** 3.73 10,200 lbs (4 627 kg) 15,500 lbs (7 031 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**NHT Enhanced Trailering Performance Package required.
+The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-59

C-1500 Extended Cab
Short Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.3L V63.23
3.734,400 lbs (1 196 kg)
4,900 lbs (2 223 kg)9,500 lbs (4 309 kg)
10,000 lbs (4 536 kg)
4.8L V83.23
3.734,800 lbs (2 177 kg)
6,800 lbs (3 084 kg)10,000 lbs (4 536 kg)
12,000 lbs (5 448 kg)
5.3L V83.42
3.736,800 lbs (3 084 kg)
7,800 lbs (3 538 kg)12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)
6.0L V8 3.73 8,800 lbs (3 992 kg) 14,000 lbs (6 350 kg)
*This model is neither designed nor intended to tow fth-wheel or gooseneck trailers.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
C-1500 Crew Cab Short
Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR+
4.8L V83.23
3.734,600 lbs (2 086 kg)
6,600 lbs (2 994 kg)10,000 lbs (4 536 kg)
12,000 lbs (5 443 kg)
5.3L V83.42
3.736,600 lbs (2 994 kg)
7,600 lbs (3 447 kg)12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
6.0L V8 3.73 8,700 lbs (3 946 kg) 14,000 lbs (6 350 kg)
6.0L V8** 3.73 10,200 lbs (4 627 kg) 15,500 lbs (7 031 kg)
*This model is neither designed nor intended to tow fth-wheel or gooseneck trailers.
**NHT Enhanced Trailering Performance Package required.
+The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-60

C-1500 Regular Cab
Long Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.3L V63.23
3.734,700 lbs (2 132 kg)
5,200 lbs (2 359 kg)9,500 lbs (4 309 kg)
10,000 lbs (4 536 kg)
4.8L V83.23
3.735,100 lbs (2 313 kg)
7,100 lbs (3 221 kg)10,000 lbs (4 536 kg)
12,000 lbs (5 448 kg)
5.3L V83.42
3.737,000 lbs (3 175 kg)
8,000 lbs (3 629 kg)12,000 lbs (5 443 kg)
13,000 lbs (5 896 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
C-1500 Extended Cab
Long Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR**
5.3L V83.42
3.736,500 lbs (2 948 kg)
7,500 lbs (3 402 kg)12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-61

K-1500 Regular Cab
Standard Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.3L V6 3.73 5,100 lbs (2 313 kg) 10,000 lbs (4 536 kg)
4.8L V83.42
4.105,900 lbs (2 676 kg)
7,900 lbs (3 583 kg)11,000 lbs (4 989 kg)
13,000 lbs (5 902 kg)
5.3L V83.73
4.107,900 lbs (3 583 kg)
8,900 lbs (4 037 kg)13,000 lbs (5 896 kg)
14,000 lbs (6 350 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
*Fifth-wheel or gooseneck trailer rating limited to 7,300 lbs (3 311 kg).
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
K-1500 Extended Cab
Standard Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR+
4.8L V83.42
4.105,500 lbs (2 495 kg)
7,500 lbs (3 402 kg)11,000 lbs (4 989 kg)
13,000 lbs (5 897 kg)
5.3L V83.73
4.107,500 lbs (3 402 kg)
8,500 lbs (3 855 kg)13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
6.0L V8 3.73 8,500 lbs (3 855 kg) 14,000 lbs (6 350 kg)
6.0L V8** 4.10 10,500 lbs (4 763 kg) 16,000 lbs (6 257 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**NHT Enhanced Trailering Performance Package required.
+The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-62

K-1500 Extended Cab
Short Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.8L V83.42
4.105,500 lbs (2 495 kg)
7,500 lbs (3 402 kg)11,000 lbs (4 989 kg)
13,000 lbs (5 897 kg)
5.3L V83.73
4.107,500 lbs (3 402 kg)
8,500 lbs (3 855 kg)13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
6.0L V8 3.73 8,500 lbs (3 856 kg) 14,000 lbs (6 350 kg)
*This model is neither designed nor intended to tow fth-wheel or gooseneck trailers.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
K-1500 Crew Cab Short
Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR+
4.8L V83.42
4.105,400 lbs (2 449 kg)
7,400 lbs (3 356 kg)11,000 lbs (4 989 kg)
13,000 lbs (5 897 kg)
5.3L V83.73
4.107,500 lbs (3 402 kg)
8,500 lbs (3 855 kg)13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
6.0L V8 3.73 8,400 lbs (3 810 kg) 14,000 lbs (6 350 kg)
6.0L V8** 4.10 10,500 lbs (4 763 kg) 16,000 lbs (6 257 kg)
*This model is neither designed nor intended to tow fth-wheel or gooseneck trailers.
**NHT Enhanced Trailering Performance Package required.
+The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-63

K-1500 Regular Cab
Long Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR**
4.3L V6 3.73 4,900 lbs (2 223 kg) 10,000 lbs (4 536 kg)
4.8L V83.42
4.105,900 lbs (2 676 kg)
7,900 lbs (3 583 kg)11,000 lbs (4 989 kg)
13,000 lbs (5 896 kg)
5.3L V83.73
4.107,900 lbs (3 583 kg)
8,900 lbs (4 037 kg)13,000 lbs (5 896 kg)
14,000 lbs (6 350 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
K-1500 Extended Cab
Long Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR**
5.3L V83.73
4.107,300 lbs (3 311 kg)
8,300 lbs (3 765 kg)13,000 lbs (5 896 kg)
14,000 lbs (6 350 kg)
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg) maximum.
**The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be
exceeded.
4-64