2016 Chevrolet Tahoe
Mileage
88,269
Service Date
7/9/2026
Services Performed
- Had code P2635, fuel flow performance, performed a fuel pressure comparison reading though. During fuel pressure comparison of low pressure fuel side every once in awhile desired fuel pressure will be at 46 and fuel pressure sensor reading will drop to 30. This is a significant change in pressure and could set this code. Recommend replacing low pressure fuel pump to start with. Please note that failure of low pressure fuel pump can cause damage to high pressure fuel pump. Per TSB RECOMMEND only using 91 octane fuel.
- Ray must use 91 octane fuel in the summertime to prevent Vapor locking. This is a TSB from GM.
RAY A. gave our service a 5 star review on 7/9/2026
