The 2007 DTS generates a steady stream of electrical complaints across 26 reported incidents. The most serious is a safety recall for ignition key rotation from RUN to OFF during driving, which shuts down the engine, power steering, power brakes, and potentially airbags. As of these complaints, GM has issued the recall but cannot supply repair parts because engineers have not finalized a fix. Dealerships cannot sell recalled vehicles until repaired, leaving owners stuck.
Water intrusion from roof and moonroof leaks shorts out the yaw sensor (stability control) under the driver seat and brake light circuits, causing warning lights and loss of tail lights. Connectors under the front passenger seat melt from overheating in the heated seat and climate control circuit—a fire hazard with no manufacturer response. Turn signal bulbs overheat and melt headlight housings, requiring expensive full-assembly replacement. Twilight sensors malfunction, dimming the instrument cluster so the speedometer becomes unreadable. Multiple owners received recall notification (Campaign 14V355000) but the required parts are unavailable. One owner experienced complete power loss at 70 mph with all safety lights illuminating and brakes failing. Fuse boxes overheat and melt. Battery drains in cold or wet weather despite new battery and alternator. Dealers consistently report finding nothing wrong even after multiple visits.
Failure modes owners describe
Ignition Key Slippage (Safety Recall)
The ignition key rotates from RUN to OFF position during driving, killing engine power, steering, brakes, and potentially preventing airbag deployment. GM recalls exist but parts remain unavailable; engineers are still developing a fix. Owners report dealerships cannot sell recalled vehicles until repaired, rendering them unsaleable.
When: Unspecified; affects multiple owner vehicles simultaneously
Symptoms owners cite: Key slips from RUN to OFF while driving; Loss of power steering; Loss of power brakes; Engine stalls unexpectedly; Airbag deployment concern; All safety lights illuminate
Repairs/costs cited: Recall repair parts unavailable; GM engineers have not determined final fix; dealerships directed not to sell vehicles until repaired
Recalls/TSBs owners mention: NHTSA Recall identified; GM states engineers working on fix but parts not yet determined; dealerships cannot sell vehicles pending repair
Melted Seat/Climate Control Connector
Connector (part 15326110) under front passenger seat melts due to high current draw in the climate/heating circuit. Yellow/red wire (10 AWG) overheats. Problem affects heated seats, front/rear parking assist, and HVAC thermostat operation. Fire hazard because melted module sits directly under seat cushion. Multiple owners report same issue on Cadillac forums, suggesting design defect.
When: Variable mileage; reported at 47K miles
Symptoms owners cite: Connector melts under front passenger seat; Heated seats stop operating; Front and rear parking assist fails; AC thermostat operates unpredictably (heater/AC cycle incorrectly); Visible damage to connector housing; Burning smell
Repairs/costs cited: Connector part 15326110 replacement; owners report cost prohibitive to repair at dealer; some perform self-repair
Twilight Sensor Malfunction
Automatic headlight control (twilight sensor) activates headlamps too early and turns them off too late. When headlights are on, instrument cluster brightness dims significantly, making speedometer and gauges unreadable in daylight conditions. Reported by multiple owners; problem persists even after dealer 'inspection' claims the system is OK.
When: Unspecified timing; complaint at unknown mileage
Symptoms owners cite: Headlamps activate too early in the day; Headlamps deactivate too late in the evening; Dashboard illumination dims when headlights are on; Speedometer unreadable in daylight; Instrument cluster too dark to read safely
Repairs/costs cited: No successful repairs documented; dealers claim system is 'OK' despite owner complaints
Stability Control Sensor and Speed Sensor Faults
Yaw sensor (stability control) under driver seat malfunctions, causing warning lights for Service Brake System, StabiliTrak, and traction control. Owners report prior water intrusion from roof leak shorting out yaw sensor. Speed sensor or wheel hub also suspected. Warning lights illuminate during normal driving.
When: Reported at 110,000 miles; prior yaw replacement 4 years before complaint
Symptoms owners cite: Service brake system warning light; StabiliTrak warning light; Traction control warning light; Yaw sensor under driver seat shorts when wet; Yaw controls tail lights and brake lights
Codes mentioned: Speed sensor fault (suspected), Wheel hub fault (suspected)
Repairs/costs cited: Prior yaw sensor replacement; current issue unrepaired; auto parts diagnostics suggest speed sensor or wheel hub replacement needed
Roof/Moonroof Water Leak
Water leaks into vehicle near driver's door from moonroof or roof seams. Floor becomes soaked repeatedly. Water intrusion causes electrical components underneath floor (yaw sensor, brake light circuits) to short out, disabling brake lights and tail lights. Repeated failures possible due to ongoing leak.
When: Unspecified onset; complaint filed at unknown mileage
Symptoms owners cite: Water leaks into interior near driver's door; Floor becomes soaked after rain or snow; Yaw sensor shorts due to water exposure; Tail lights and brake lights fail; Potential floor rot from repeated water exposure
Repairs/costs cited: Owner sealed moonroof on one vehicle; roof still leaks on another; underlying cause not addressed
Loss of Power Assist and Brake Function While Driving
Engine dies and vehicle slows to 4–5 mph while cruising at highway speed (70 mph). Cruise control cuts off, speedometer stops, all safety warning lights illuminate, brakes become unresponsive (no power assist), and anti-lock brake light engages. Incident repeated six times after first occurrence. Dealer unable to duplicate problem after three-week investigation.
When: Occurred at 70 mph on I-75; complaint date 9-02-2010
Symptoms owners cite: Cruise control suddenly disengages; Vehicle slows to 4–5 mph without driver input; Speedometer/odometer goes dark; All safety warning lights activate; No power assist to brakes; Anti-lock brake light illuminates; Engine dies or severely cuts power
Repairs/costs cited: Dealer kept vehicle three weeks; unable to duplicate or repair; issue recurred six times
Recalls/TSBs owners mention: GM case opened but no resolution provided; local dealer unable to fix
Turn Signal Bulb Overheating and Headlight Housing Melting
Turn signal indicator bulb (daytime running lamp/DRL) overheats and melts the plastic headlight housing assembly. Melted housing no longer accepts the bulb fixture, rendering the front turn signal inoperable. Replacement requires full headlight assembly swap (expensive). Multiple owners report similar problems on Cadillac forums; root cause appears to be design flaw in lamp heat dissipation.
When: Reported at 39,700 miles and other mileages unspecified
Symptoms owners cite: Turn signal bulb burns out; Headlight housing plastic melts from bulb heat; Housing deformation prevents bulb insertion; Front turn signal inoperable
Repairs/costs cited: Headlight housing assembly replacement required; repair cost high; new housing may not solve underlying heat issue
Windshield Washer Module Defects and Recalls
Two separate recalls issued for windshield washer module. First recall involved wire replacement. Second recall required complete removal and disabling of heated windshield washer module. Owner declined both repairs due to inconvenience and dissatisfaction with GM's quality control.
When: Owned since 2007; recalls received sequentially thereafter
Symptoms owners cite: Windshield washer system malfunction (initial recall); Heated washer module safety defect (second recall)
Repairs/costs cited: First recall: wire replacement performed; second recall: module removal/disabling not performed by owner
Recalls/TSBs owners mention: Two NHTSA recalls issued; first remedy wire replacement; second remedy removal/disabling of heated module
Alternator Failure with Sparks and Burning Odor
Check Battery/Recharge System indicator illuminates along with burning odor and visible sparks. Alternator diagnosed as failed. No recall exists for this vehicle at this mileage. Vehicle not repaired.
When: At 160,000 miles
Symptoms owners cite: Check Battery/Recharge System warning light; Burning odor from electrical system; Sparks observed; Alternator failure
Repairs/costs cited: Alternator replacement recommended by independent mechanic; owner did not repair
Recalls/TSBs owners mention: GM confirmed vehicle not included in recall
Recall Parts Unavailability (Campaign 14V355000)
Multiple owners received recall notification for NHTSA Campaign 14V355000 (Electrical System). Dealers and GM unable to provide parts or timeline for repair. Some owners waited three weeks without resolution. No specific failure experienced by affected owners but vehicle remains in recalled state awaiting repair parts.
When: Recall issued 2014; multiple complaints 2014-2015
Symptoms owners cite: Recall notification received; No parts available at dealer; Extended wait times (three weeks documented)
Repairs/costs cited: Recall parts unavailable; GM unable to provide estimated date; vehicles cannot be sold or traded in while under unrepaired recall
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 issued; GM unable to supply parts or repair timeline
Engine Stall Without Warning
Vehicle stalls suddenly without any warning lights or indicators while driving at normal speed. Engine restarts after a couple of minutes. Isolated incident reported but concerning due to lack of warning.
When: At 44,800 miles; mileage climbed to 45,000 before update
Symptoms owners cite: Sudden engine stall without warning; No warning lights illuminated before stall; Engine restarts after brief delay
Repairs/costs cited: Vehicle not taken to dealer; no diagnosis performed
Battery Discharge in Wet/Cold Weather
Battery consistently drains and goes dead in rain, snow, or cold conditions despite replacement with new battery and new alternator. Airbag message and all electrical component warning lights appear. Dealership diagnostics cannot identify cause. Safety concern for children passengers.
When: Unspecified mileage; recurring issue
Symptoms owners cite: Battery goes dead in wet weather; Battery goes dead in cold weather; Problem persists after battery replacement; Problem persists after alternator replacement; Airbag warning message; All electrical component warning lights illuminate; Multiple warning lights engage simultaneously
Repairs/costs cited: New battery installed; new alternator installed; problem unresolved
Recalls/TSBs owners mention: Dealership diagnostics found nothing wrong despite repeated visits
Fuse Box Overheating and Fire Hazard
Fuse in fuse box burns out and melts a portion of the fuse box housing itself. Major fire hazard from overheating electrical connections and melted plastic components.
When: Unspecified mileage
Symptoms owners cite: Fuse burns out; Fuse box melts from heat; Visible charring/damage in fuse box
Repairs/costs cited: Fuse box replacement necessary; fire risk present
Uncontrolled Idle Acceleration
While sitting at idle, engine suddenly accelerates to high speed without driver input or throttle movement. Owner placed car in reverse in panic, vehicle shot backward. When shifted to drive, vehicle hit solid object causing heavy damage. Driver unable to control vehicle with brakes during acceleration event.
When: Unspecified mileage; complaint date unspecified
Symptoms owners cite: Sudden uncontrolled engine acceleration at idle; No driver input or throttle pedal movement; Vehicle accelerates backward in reverse; Brakes ineffective during event; Unexpected acceleration in drive gear
Repairs/costs cited: Heavy collision damage; root cause undiagnosed
Ignition Switch and Steering Wheel Lock Failure
Ignition switch no longer locks in place. Steering wheel also does not lock (typically locks when ignition is off for security). Problem discovered while vehicle was stationary. Owner concerned about potential motion or theft hazard.
When: Unspecified mileage
Symptoms owners cite: Ignition switch does not lock; Steering wheel does not lock; Both locking mechanisms failed
Recalls/TSBs owners mention: Prior recall on ignition switch existed
Synthesized from 26 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.