Why is my GMC 246 transfer case not working?
The original rear case half on 246 units has a design issue where the oil pump rubs against the case causing pin-holes in the soft thin magnesium shell. These pin-holes allow the fluid to seep out and evaporate, leaving the transfer case without proper lubrication and cooling.
What kind of transfer case does GM venture 246 have?
This month’s candidate is the New Venture 246 transfer case, which is found in GM full-size four-wheel-drive vehicles, from 1998 to present. This transfer case is one of the so-called “automatic transfer cases,” or “active transfer cases.”
Is the NV 246 transfer case a computer?
Although the NV 246 transfer case and subsystems are extremely sophisticated and appear complex, they are more easily understood if you examine the components in regard to their functions and the relationship between their actions. The ATCM is a computer that works with other computers in the vehicle.
Where to find Assembly number on transfer case?
Before shipping, we will need the assembly number from your transfer case to verify that this part fits your vehicle. You can find the assembly number on the sticker located on the bottom of your transfer case (see below). If this information is not available, we will need the FULL VIN# of the vehicle to verify.
The original rear case half on 246 units has a design issue where the oil pump rubs against the case causing pin-holes in the soft thin magnesium shell. These pin-holes allow the fluid to seep out and evaporate, leaving the transfer case without proper lubrication and cooling.
Where is the encoder motor on a GM transfer case?
Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.
What’s the warranty on a GMC transfer case?
The NP246 model transfercase fits a variety of GMC and Chevrolet 4WD vehicles. There are several variations of the 246, so your assembly number or VIN will be required (see below) when ordering this unit. The unit is remanufactured in our facility and comes with a 12-month, unlimited miles warranty within the 48 contiguous United States.
Before shipping, we will need the assembly number from your transfer case to verify that this part fits your vehicle. You can find the assembly number on the sticker located on the bottom of your transfer case (see below). If this information is not available, we will need the FULL VIN# of the vehicle to verify.