Is it safe to drive my Hummer with code P0087?

Drive with caution and get it checked as soon as possible—avoid long trips.

How much does it cost to fix P0087 on a Hummer?

For a Hummer, repairs for P0087 typically cost between $200 and $1200, depending on the cause and whether you use OEM or aftermarket parts.

What are common causes of P0087 on a Hummer?

Failing high-pressure fuel pump (direct injection engines), Weak low-pressure lift pump, Clogged or restricted fuel filter, Leaking fuel pressure regulator, Restricted fuel supply line.

What does code P0087 mean on a Hummer and is it safe to drive?

P0087: Fuel Rail/System Pressure – Too Low. Here's what it means on your Hummer, what usually causes it, what repairs typically cost, and how safe it is to keep driving.

PowertrainHigh urgency

What this code means

The actual fuel rail pressure is lower than the PCM commanded. On direct-injection engines the high-pressure fuel pump is the primary suspect; on port injection engines the lift pump or filter is most common.

Common causes for your Hummer

Failing high-pressure fuel pump (direct injection engines)
Weak low-pressure lift pump
Clogged or restricted fuel filter
Leaking fuel pressure regulator
Restricted fuel supply line

Symptoms

Check Engine Light
Hard starting, especially when hot
Stalling or stumbling under load or acceleration
Rough idle

Typical fixes

Replace high-pressure fuel pump (GDI engines)
Replace low-pressure (in-tank) fuel pump
Replace fuel filter
Inspect and replace fuel pressure regulator

Repair cost range

For a Hummer, repairs for P0087 often fall between $200 and $1200, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.