


🚦 Stop with confidence—GM Genuine Parts power your safety!
The GM Genuine Parts 178-0856 Power Brake Booster Vacuum Sensor is a factory-spec replacement sensor designed to detect pressure issues in your GM vehicle’s power brake booster. Manufactured by ACDelco to GM OE standards, it ensures perfect fit, durability, and reliable braking performance at a fraction of dealership cost.





| ASIN | B007QBK58I |
| Best Sellers Rank | #89,492 in Automotive ( See Top 100 in Automotive ) #28 in Car Power Brake Systems |
| Brand | GM GENUINE PARTS |
| Customer Reviews | 4.2 4.2 out of 5 stars (28) |
| Date First Available | 21 September 2023 |
| Exterior | Machined |
| Item Weight | 30 g |
| Item model number | 178-0856 |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 20876877 |
| Model | Sensor Kit-P/B Boos Vac |
| OEM Part Number | 20876877 |
| Product Dimensions | 15.24 x 15.24 x 2.54 cm; 30 g |
R**O
Llegó antes de lo planeado, es pieza original
C**C
This part fixed my breaking issue on my 2011 Chevy Traverse and was 1/3 the cost of the dealership. Was the exact same OEM park from Chevy. Would buy again, hopefully wont have to.
G**K
My Brake light came on intermittently and said traction control off. Service brake system. Had the code read. C1100. It recommended changing this sensor. 2011 Chevy traverse. This the exact OEM Bosch part that I removed. Thanks!
D**Z
I got an error code to service my brake system, after watching a few YouTube videos this fixed it.
A**R
Not oem this is not GM approved product. Does not have any indication of oem part Do not buy this..
Trustpilot
3 weeks ago
2 weeks ago