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if you purchased the pickup when it was used then whoever owned it before you may have had the transmission and other things reprogrammed. If you have a tow/haul button that changes shifting conditions, but not by very much. The transmission can be reprogrammed to shift a little harder to reduce slippage or for kids who think they can have a faster truck... If it's a mechanical problem then that's a different issue...but if it isn't then i would look into finding out if it's been reprogrammed.
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What size engine does the 2002 GMC Sierra-2500HD have?
The 2002 GMC Sierra-2500HD has a V8 engine.
How many valves does the 2002 GMC Sierra-2500HD have?
The 2002 GMC Sierra-2500HD has 16 valves.
What size engine does the 2002 GMC Sierra-1500 have?
The 2002 GMC Sierra-1500 has a V6 engine.
How many valves does the 2002 GMC Sierra-1500 have?
The 2002 GMC Sierra-1500 has 12 valves.
Is the 2002 GMC Sierra-1500 electric or gas?
The 2002 GMC Sierra-1500 is a gas-powered vehicle.
Is the 2002 GMC Sierra-2500HD electric or gas?
The 2002 GMC Sierra-2500HD is a gas-powered vehicle.
What is the cam type of the 2002 GMC Sierra-2500HD?
The 2002 GMC Sierra-2500HD has overhead valves (OHV).
What is the cam type of the 2002 GMC Sierra-1500?
The 2002 GMC Sierra-1500 has overhead valves (OHV).
What kind of transmission does the 2002 GMC Sierra-2500HD have?
The 2002 GMC Sierra-2500HD has a 5-speed manual.
What kind of fuel does the 2002 GMC Sierra-2500HD use?
The 2002 GMC Sierra-2500HD runs on regular unleaded.
How tall is the 2002 GMC Sierra-1500?
The height of the 2002 GMC Sierra-1500 is 5 ft. 11 in. (71 in.).
What kind of fuel does the 2002 GMC Sierra-1500 use?
The 2002 GMC Sierra-1500 runs on regular unleaded.
