2006 Cadillac SRX Problems: 4 Known Issues

On the 2004-2006 Cadillac SRX, on 2004-2006 first-generation SRX, weight on the key ring or a jarring road event can move the ignition switch out of the RUN position. The engine shuts off, power steering and power brake assist are lost, and the airbags may not deploy in a crash. GM notified NHTSA on July 2, 2014 and recalled 2003-2014 Cadillac CTS together with 2004-2006 SRX built March 20, 2003 to August 11, 2006 - 554,328 vehicles in total. This is a first-generation-only defect; the 2010+ Theta-platform SRX uses a different ignition architecture and is not covered.

On the 2004-2009 Cadillac SRX 3.6L LY7 V6, the longitudinal 5L40-E five-speed behind the first-generation SRX 3.6L wears the bushing behind the pump seal that keeps the torque converter running true. Once the bushing wears the converter wobbles, producing a judder or shudder felt at light throttle around lockup, then destroying the pump seal and letting the front of the unit leak. Separately, gen-1 SRX owners report the transmission running hot under sustained load or in mountain driving, traced to the cooler-line thermal bypass valve restricting flow through the cooler - modifying it with the 2005-and-later cooler line is a common owner fix. Heat plus converter wobble is what kills these units. Note this is the rear-drive gen-1 unit; V8 cars use the heavier-duty 5L50 variant, and the 2010+ SRX uses transverse six-speeds instead (GM 6T70, or an Aisin AF40 with the 2010-2011 2.8L turbo).

On the 2004-2009 Cadillac SRX, on first-generation SRX models with a sunroof or panoramic roof, the roof module has a drain trough around the sliding glass with four drain hoses - two down the windshield pillars and two down the rear sail/quarter panels. Debris packs the trough and hoses, and the rear hoses split where they route down the quarter panel, so water that should exit at the wheel houses instead dumps inside the body. Owners find soaked front carpet, stained headliners, water standing in the spare tire well and rear cargo area, and secondary electrical faults where modules and connectors sit low in the car. First-generation cars are now old enough that the hoses are brittle; the same drain architecture leaks on the gen-2 body as well, but the gen-1 rear routing is the one that splits.

On the 2004-2009 Cadillac SRX, first-generation SRX ordered with the rear self-leveling air suspension uses air-over shock units at the rear fed by a small electric compressor with an integral dryer and vent/supply solenoid head. The rubber air sleeves dry-rot and leak with age; the compressor then runs continuously trying to hold ride height, overheats, and dies. Moisture that the failed dryer no longer captures corrodes the solenoid control head, so a car can end up with leaking shocks, a burned compressor and a corroded valve block all at once. Owners report the rear sitting on the bumpstops, service-suspension messages, and a compressor that will not run at all once its fuse or relay has been taken out by the overworked motor. This is gen-1 only - the 2010+ SRX does not use rear air leveling.