2004 GMC T6500

The 2004 GMC T6500 is a heavy-duty commercial truck with a gross vehicle weight rating (GVWR) of up to 65,000 pounds. It is available with a variety of engine and transmission options, including gasoline and diesel engines, and manual and automatic transmissions.

The T6500 is known for its durability and reliability, and it is a popular choice for commercial applications such as construction, landscaping, and towing. However, like all vehicles, it is not without its problems.

Engine

• Vortec 8.1L V8
  • Intake manifold gasket failure: This is a common problem on the Vortec 8.1L V8 engine, and it can cause coolant and oil leaks. The symptoms include overheating, coolant leaks, and a loss of power. The solution is to replace the intake manifold gasket. The estimated cost to fix this issue is $500 - $1,000.
  • Head gasket failure: This is another common problem on the Vortec 8.1L V8 engine, and it can cause coolant and oil leaks, as well as a loss of compression. The symptoms include overheating, coolant leaks, a loss of power, and white smoke from the exhaust. The solution is to replace the head gasket. The estimated cost to fix this issue is $1,000 - $2,000.
  • Crankshaft position sensor failure: This sensor is responsible for monitoring the crankshaft speed and position, and it can cause the engine to stall or run poorly if it fails. The symptoms include difficulty starting, stalling, and a loss of power. The solution is to replace the crankshaft position sensor. The estimated cost to fix this issue is $100 - $200.
• Duramax 6.6L V8
  • Fuel injector failure: This is a common problem on the Duramax 6.6L V8 engine, and it can cause the engine to run rough, lose power, and produce black smoke from the exhaust. The symptoms include a rough idle, a loss of power, and black smoke from the exhaust. The solution is to replace the fuel injectors. The estimated cost to fix this issue is $500 - $1,000.
  • Turbocharger failure: The turbocharger is responsible for boosting the engine’s power, and it can fail if it is not properly maintained. The symptoms include a loss of power, black smoke from the exhaust, and a whistling noise from the engine. The solution is to replace the turbocharger. The estimated cost to fix this issue is $1,000 - $2,000.
  • Exhaust gas recirculation (EGR) valve failure: The EGR valve is responsible for reducing emissions, and it can fail if it is not properly maintained. The symptoms include a loss of power, black smoke from the exhaust, and a check engine light. The solution is to replace the EGR valve. The estimated cost to fix this issue is $200 - $400.

Transmission

• Allison 1000 5-speed automatic transmission
  • Torque converter failure: This is a common problem on the Allison 1000 5-speed automatic transmission, and it can cause the transmission to slip or shudder. The symptoms include slipping gears, shuddering, and a loss of power. The solution is to replace the torque converter. The estimated cost to fix this issue is $1,000 - $2,000.
  • Valve body failure: The valve body is responsible for controlling the flow of fluid in the transmission, and it can fail if it is not properly maintained. The symptoms include slipping gears, harsh shifting, and a loss of power. The solution is to replace the valve body. The estimated cost to fix this issue is $500 - $1,000.
  • Input shaft bearing failure: The input shaft bearing is responsible for supporting the input shaft, and it can fail if it is not properly maintained. The symptoms include a whining noise from the transmission, a loss of power, and a check engine light. The solution is to replace the input shaft bearing. The estimated cost to fix this issue is $500 - $1,000.
• ZF AS Tronic 12-speed automatic transmission
  • Mechatronic unit failure: The mechatronic unit is responsible for controlling the transmission, and it can fail if it is not properly maintained. The symptoms include slipping gears, harsh shifting, and a loss of power. The solution is to replace the mechatronic unit. The estimated cost to fix this issue is $2,000 - $4,000.
  • Valve body failure: The valve body is responsible for controlling the flow of fluid in the transmission, and it can fail if it is not properly maintained. The symptoms include slipping gears, harsh shifting, and a loss of power. The solution is to replace the valve body. The estimated cost to fix this issue is $1,000 - $2,000.
  • Input shaft bearing failure: The input shaft bearing is responsible for supporting the input shaft, and it can fail if it is not properly maintained. The symptoms include a whining noise from the transmission, a loss of power, and a check engine light. The solution is to replace the input shaft bearing. The estimated cost to fix this issue is $500 - $1,000.

Suspension

• No Issues Found

Electrical

• Battery failure: The battery is responsible for providing power to the electrical system, and it can fail if it is not properly maintained. The symptoms include difficulty starting, flickering lights, and a dead battery. The solution is to replace the battery. The estimated cost to fix this issue is $100 - $200.
• Alternator failure: The alternator is responsible for charging the battery, and it can fail if it is not properly maintained. The symptoms include difficulty starting, flickering lights, and a dead battery. The solution is to replace the alternator. The estimated cost to fix this issue is $200 - $400.
• Starter failure: The starter is responsible for starting the engine, and it can fail if it is not properly maintained. The symptoms include difficulty starting, a clicking noise, and a dead battery. The solution is to replace the starter. The estimated cost to fix this issue is $200 - $400.

Exterior

• Headlight failure: The headlights are responsible for providing light at night, and they can fail if they are not properly maintained. The symptoms include dim headlights, flickering headlights, and a dead battery. The solution is to replace the headlight bulbs. The estimated cost to fix this issue is $50 - $100.
• Taillight failure: The taillights are responsible for providing light at night, and they can fail if they are not properly maintained. The symptoms include dim taillights, flickering taillights, and a dead battery. The solution is to replace the