There are two different Underhood Bussed Electrical Centers (UBEC) used in the Aveo -- 96539834 is used on the Hatchback model and 96539835 is used on the Notchback model.
The new Aveo Underhood Bussed Electrical Center (UBEC) uses a new ISO Micro Relay which uses both 4.8mm and 6.3mm terminals (fig. 4). The new relay looks like the common 280 relay you are used to seeing in most Bussed Electrical Centers.
AÂ 280 relay
BÂ ISO Micro relay
There are two different ISO Micro relays used in the Aveo Hatchback UBEC. There is a high current (35 amp) black relay and gray relay for all circuits with less than 20 amp current flow (fig. 5).
AÂ Black relay (35 amp)Â
BÂ Gray relay (less than 20 amp)
There are three different ISO relays used in the Aveo Notchback UBEC. There is a black high current (35 amp) relay and a gray relay for all circuits with less than 20 amp current flow, as well as the larger 13502674 Mini ISO relay (fig. 6).
TIP: In some cases the service relay part may have 5 terminals rather than the 4 terminal relay you may be replacing. In this case the fifth terminal has no function and the relay will work as a replacement part (fig. 7 and 8).
The service part number is 13502676 for the low current gray relays and 96484304 for the high current 35 Amp black relays.
REMOVING BEC COVER
To remove the BEC cover, press the large tab at the end and lift the cover off (fig. 9).
Continue to lift the cover up and away from the two rear tabs to completely remove the lid(fig. 10).
To remove the BEC from its mounting bracket in order to remove or gain access to the wiring harness connectors underneath the BEC, release the three tabs and lift the BEC
up (fig. 11).
- Thanks to John Roberts
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