Water intrusion is the dominant complaint across this visibility cluster. Multiple owners describe sunroof leaks beginning within days of delivery and recurring within days to weeks after dealer repair attempts. Water penetrates the A-pillar, airbag columns, headliner, carpets, and door bulkheads. In at least two cases, water reached the body control module and fuse blocks, causing electrical shorts; one owner—a certified mechanic—replaced the body control module five times. Dealers have attempted fixes ranging from windshield resealing to drain-tube replacement and fuse-box replacement, with no lasting success. Owners express concern about mold growth and electrical system reliability.
A secondary water issue: driver and passenger window seals retain standing water, breeding persistent mold that produces offensive odor and triggers allergies even after the dealer's suggested air-hose remedy.
Windshield wiper failures are documented as a major hazard. Wiper linkage disconnects during rain and snow, eliminating visibility. Recall 08091 addressed this, but owners report the defect recurred years after the recall work, and GM refused to cover out-of-warranty repairs. One owner experienced total wiper failure in heavy snow in Virginia and had no visibility until manually stopped.
One complaint documents a sunroof sudden explosion at 20,000 miles while driving at highway speed. A driver-side mirror adjustment switch failed and parts remained on backorder. A wiper-fluid warning light malfunctions, showing the tank is empty when it is full and remaining lit after refill.
Failure modes owners describe
Sunroof water leaks
Sunroof fails to seal properly, allowing rainwater to penetrate the cabin. Water drains into multiple locations: A-pillar area above body control module, airbag columns, headliner, carpet, and driver's side door bulkhead. Leaks recur repeatedly even after dealer repair attempts.
When: As early as 6 days after delivery; occurs during or shortly after rain exposure. Reported across mileage range from 20,000 to 171,800 miles.
Symptoms owners cite: Water pooling visibly in sunroof; Water pouring from front sides onto steering wheel while driving; Water leaking down A-pillar above body control module; Water entering airbag columns and leaking from airbag areas; Water dripping from headliner and passenger-side windshield; Mold and mildew odor in roof liner and carpets; Electrical shorts from water intrusion into fuse blocks and body control module; Mold growth on carpets
Repairs/costs cited: Windshield resealed; sunroof seal strip replaced; drain tubes blown out; drain tubes replaced; body control module replaced (done five times in one case); fuse box replaced. Repairs do not hold; leaks recur within days to weeks.
Recalls/TSBs owners mention: Recall 08207 issued for sunroof water leak; Technical Service Bulletin 07-08-57-002E issued. Manufacturer notified in multiple cases but some owners report manufacturer did not assist or could not determine cause.
Window seal water retention and mold
Driver and passenger window seals trap and hold standing water, creating persistent mold and mildew growth. The trapped moisture produces offensive odor that triggers allergies.
When: Recurring, particularly after rain or vehicle washing.
Symptoms owners cite: Strong offensive mold/mildew odor from window seals; Water trapped in driver and passenger window seals; Allergy symptoms triggered by mold odor when operating windows
Repairs/costs cited: Dealer suggested blowing out trapped water with air hose, but this does not resolve the problem—water re-accumulates after rain or washing.
Windshield wiper linkage failure
Wiper linkage disconnects or fails during operation, leaving driver without visibility in rain or snow. Recall 08091 was issued to address this defect, but linkage failures have occurred both before recall was performed and years after repair.
When: One case at 16,319 miles; another case at highway speed during rain; one case in 2015 (years after recall work in 2008) in heavy snowfall.
Symptoms owners cite: Windshield wipers suddenly fail to operate; Wiper linkage disconnects or comes off wiper motor; Complete loss of visibility in snow or heavy rain; Wipers non-responsive in cold winter weather
Repairs/costs cited: Recall 08091 performed; independent shop repair performed. GM refused to reimburse for repair even though recall covers the defect.
Recalls/TSBs owners mention: Recall 08091 issued for windshield wiper linkage failure. Recall work performed in 2008 in one documented case; however, defect recurred in 2015. Manufacturer did not cover repair costs in at least one case.
Sunroof explosion/detachment
Sunroof suddenly blew off the vehicle while driving at highway speed without warning.
When: At 20,000 miles.
Symptoms owners cite: Sunroof suddenly detached and blew off during highway driving
Recalls/TSBs owners mention: Dealer stated they would attempt to assist; resolution not documented.
Side view mirror adjustment failure
Driver-side side view mirror becomes inoperable and cannot be adjusted, making it impossible to see oncoming traffic. The problem persisted for at least six months before diagnostic.
When: At least six months of operation before diagnosis.
Symptoms owners cite: Driver-side mirror does not move or adjust; Mirror stuck in fixed position
Repairs/costs cited: Dealer identified that mirror adjustment switch needed replacement; part was ordered but as of the complaint date remained on backorder with no availability reported in the U.S.
Wiper fluid level warning malfunction
Dashboard warning message indicates windshield wiper fluid is low or empty when it is not, and the warning persists even after the fluid reservoir has been refilled.
When: Unspecified timing.
Symptoms owners cite: Erroneous low/empty wiper fluid warning displayed on dash; Warning remains illuminated after fluid is refilled
Synthesized from 19 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.