SRX AWD V6-3.6L (2008)
Vacuum Pump: Customer Interest
Brakes - Hard Brake Pedal On High Altitude Cold Start
TECHNICAL
Bulletin No.: 08-05-22-003A
Date: September 11, 2008
Subject:
Hard Brake Pedal on Cold Start at High Altitudes (Install Auxiliary Vacuum Pump)
Models:
2008-2009 Cadillac SRX
with 3.6L Engine (VIN 7 - RPO LY7)
Supercede:
This bulletin is being revised to add a model year and to include a diagnostic table. Please discard Corporate Bulletin Number 08-05-22-003 (Section 05
- Brakes).
Condition
Some customers may comment on a hard brake pedal. This condition is most apparent in the first 30 seconds to 1 minute after a cold start and at high
altitudes, usually between 1219-1829 m (4,000-6,000 ft).
Cause
This condition may be caused by low engine vacuum during warm up.
Correction
Install an auxiliary vacuum pump, P/N 89058946 with installation kit, P/N 25927642, using the procedure below.
