Send an answer to a topic: 1999-2007 Chevrolet Silverado/Cheyenne and GMC Sierra Pickup Trucks [GMT800/880]
Warning, this subject is old (1864 days without answer)
Nice find Truck_Guy! Finally can use the 10+ years of spanish to use 
A few little things, 1999-2003 1500 Series trucks are only available in Regular Cab/Long Box, Regular Cab/Short Box, Extended Cab/Standard Box and Extended Cab/Long Box configurations. GM didn't introduce a 1500 Crew Cab until the 2004 model year.
See page 17 of the 2004 Silverado Vehicle Information Kit from GM Heritage Center for reference.
2004 1500 Crew Cab [GMT800] shown below:
Not to be confused with the 2001-2003 and 2005-2007 1500HD Crew Cab [GMT880], note the 8-lug wheel and 1500HD badging.
2001-2002:
2003 and 2005:
2006-2007:
For 2004, there wasn't a 1500HD option, instead, those trucks were badged as 2500 (not to be confused with 2500HD :lol:) to avoid confusion with the newly introduced 1500 Crew Cab.
For 1999-2002, 2500 models were also available on Regular Cab/Long Box, Extended Cab/Standard Box and Extended Cab/Long Box.
Note the difference in grille and hood from the 2001-2002 2500HD shown below
Other differences to note are the mirror choices for the 2003-2005 and 2006-2007 2500HD and 3500 trucks.
2003-2005 offered the 'accordian' style power-extending mirrors on LS and LT trims (Chevy) and SLE and SLT trims (GMC).
2006-2007 models offered a new towing mirror, which did not power extend.
2001-2005 models equipped with the Duramax diesel engine use this badge:
2006-2007 models used this badging:
All 2006-2007 model Silverados had the 'CHEVROLET' badge on the right side of the tailgate deleted.
2002-2003 1500 Silverado with Extended Cab/Standard Box Fleetside configuration could be had with Chevrolet's Protec composite pickup box. This included a unique tailgate with Protec logo, as well as 'CHEVROLET' written across the tailgate in a similar fashion to the Avalanche. See page 13/29 of the 2002 Silverado brochure:
http://www.auto-brochures.com/makes/Chevrolet/Silverado/Chevrolet_US%20Silverado_2002.pdf
2002 was also the first year for GM/Delphi's Quadrasteer four-wheel steering system. Standard on Sierra Denali, optional on LS, LT, SLE and SLT models.
Note the wide rear fenders, roof-mounted clearance lamps and side marker lamps on the box.
2004 Silverado 2500 Crew Cab LT with Quadrasteer
See page 17 of the 2004 Silverado Vehicle Information Kit from GM Heritage Center for reference.
2004 1500 Crew Cab [GMT800] shown below:
Not to be confused with the 2001-2003 and 2005-2007 1500HD Crew Cab [GMT880], note the 8-lug wheel and 1500HD badging.
2001-2002:
2003 and 2005:
2006-2007:
For 2004, there wasn't a 1500HD option, instead, those trucks were badged as 2500 (not to be confused with 2500HD :lol:) to avoid confusion with the newly introduced 1500 Crew Cab.
For 1999-2002, 2500 models were also available on Regular Cab/Long Box, Extended Cab/Standard Box and Extended Cab/Long Box.
Note the difference in grille and hood from the 2001-2002 2500HD shown below
Other differences to note are the mirror choices for the 2003-2005 and 2006-2007 2500HD and 3500 trucks.
2003-2005 offered the 'accordian' style power-extending mirrors on LS and LT trims (Chevy) and SLE and SLT trims (GMC).
2006-2007 models offered a new towing mirror, which did not power extend.
2001-2005 models equipped with the Duramax diesel engine use this badge:
2006-2007 models used this badging:
All 2006-2007 model Silverados had the 'CHEVROLET' badge on the right side of the tailgate deleted.
2002-2003 1500 Silverado with Extended Cab/Standard Box Fleetside configuration could be had with Chevrolet's Protec composite pickup box. This included a unique tailgate with Protec logo, as well as 'CHEVROLET' written across the tailgate in a similar fashion to the Avalanche. See page 13/29 of the 2002 Silverado brochure:
http://www.auto-brochures.com/makes/Chevrolet/Silverado/Chevrolet_US%20Silverado_2002.pdf
2002 was also the first year for GM/Delphi's Quadrasteer four-wheel steering system. Standard on Sierra Denali, optional on LS, LT, SLE and SLT models.
Note the wide rear fenders, roof-mounted clearance lamps and side marker lamps on the box.
2004 Silverado 2500 Crew Cab LT with Quadrasteer