So far, it seems the following changes are certain: Redesigned front fascia/grill. Redesigned interior/dash for higher trim level models. H.P./torque increase for Duramax. New ZR2/AT4X off-road models These changes are rumored: H.P./torque increase for L8T 6.6L gasoline engine. 10 speed Allison transmission available with L8T gasoline engine. E-coat frame. Any more?
My experience is that TPMS sensors usually last 8-10 years at which time the battery in them dies. On my own vehicles I replace all the sensors when I need new tires and the truck is over 8 years old. I see the dealer's point about not wanting to warranty a sensor that was damaged when the OEM tires were replaced, but the sensor did last quite a while after the tires were changed so I doubt is was damaged. I think that sensor runs about $75 and if you figure #125/hr. labor it will be a $200 job customer pay.
Should be a GMT-400. Yes, they made them. There is even a picture of a crew cab short bed dually in the 2000 GMC Sierra sales brochures, Someone in my neighborhood had one too. Yes they are rare, 2000 MY only. Before that some were converted by aftermarket companies.
The door actuator for the driver's side is the one on the bottom of the HVAC case, the passenger side is on top behind the air bag if you have the dual zone option. When you change an actuator always check to make sure the door moves freely. Otherwise it is posible you have a bad HVAC controller.
C/K Man replied to C/K Man's topic in 6.6L Gas V8 & HD Transmission Powertrain (L8T/MYD)I think the scheduled 2023 HD refresh has been delayed until the 2024 MY.
The manual is best because it also has a component locater section which will show you exactly where the grounds (and other connectors and components) are located. You might get lucky on the web but I don't know of any specific sites.
My first thought would be to check all the grounds in the dash and front end. Also, if you replaced the cluster, did you have it programmed to the truck? Best place to find a wiring diagram is in the factory shop manual, you might be able to find one reasonable on Ebay.
These problems are industry wide at this point. Ford and Ram are having the same issues. I know it's no help, but that's just the world we live it at the moment.
Some late model vehicles actually do have an ECM setting for AGM batteries, but it doesn't matter in the older trucks. Rule of thumb is if the truck has a charging amp sensor (clamps around the positive cable near the battery) it might need to be programmed for AGM batteries. Always check the service manual.
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