Cadillac Car Parts UK - Quality Used & Genuine Parts

How to Replace Cadillac Headlights

Cadillac headlight replacement varies between models but follows similar principles. Whether replacing standard units or upgrading to LED or adaptive headlights, this guide covers Escalade SUVs, CT5 sedans, XT5 crossovers, and other Cadillac vehicles with premium lighting systems.

Step-by-Step Instructions:

1. Open the bonnet and secure it safely. Locate the rear of the headlight assembly from within the engine bay. On Escalade models, the large bonnet provides excellent access to headlight mountings with substantial space for working. On CT5 and sedan models, access is straightforward though you may need to work around battery or fuse box. On XT5 and crossover models, the elevated bonnet height makes headlight access very convenient. Cadillac luxury vehicles typically provide good access for maintenance.
2. Disconnect all electrical connectors. Cadillac headlights typically have 2-4 electrical connectors depending on specification. These include main bulb connector for low and high beams, daytime running light connector, and on adaptive or IntelliBeam models additional connections for leveling motors, beam control modules, or adaptive lighting systems. Press the release tabs carefully and pull straight out with firm steady pressure. Some Cadillac connectors use twist-lock mechanisms requiring counterclockwise rotation before pulling. Keep track of connector positions as incorrect reconnection causes warning lights.
3. Remove the headlight mounting bolts. Most Cadillac models use 10mm bolts to secure the headlight assembly to the front body structure. On Escalade models from 2015-2020, there are typically 3-4 bolts along the top edge accessible once the bonnet is open. On CT5 and newer sedans, expect 2-3 mounting bolts with possible additional lower mounting tabs. On XT5 and XT6 crossovers, headlights usually have 3 mounting bolts clearly visible from above. Remove all mounting bolts completely and keep them organized as replacement headlights may not include new hardware. Cadillac uses quality fasteners that resist corrosion.
4. Release any additional clips or retainers. Some Cadillac headlights use supplementary plastic clips for additional security beyond bolts. On Escalade models, check for clips at the inner corner near the grille area and outer corner near wing. On sedan models like CT5 and CTS, look for tabs that slot into the bumper cover or wing panel. On crossover models, inspect the bottom edge for retention clips that engage with lower fascia. Work carefully as plastic clips can become brittle with age especially on vehicles exposed to temperature extremes or UV damage. Use trim removal tool rather than screwdrivers to prevent breaking clips.
5. Carefully remove the headlight assembly. With all bolts and clips released, gently pull the headlight straight forward out of its mounting position. Cadillac headlights typically slide forward on locating pins that ensure correct alignment during installation. Support the weight as you pull to prevent dropping as luxury headlights are expensive. If you encounter resistance, stop immediately and check for missed fixings rather than forcing which can break mounting tabs. On some Escalade models, you may need to angle the headlight slightly downward and forward to clear surrounding bodywork during removal.
6. Transfer components to new headlight if needed. If your replacement headlight doesn't include bulbs, ballasts for HID systems, or leveling motors, carefully transfer these components from the old unit to the new housing. When handling HID bulbs, wear clean gloves to avoid touching glass or quartz surfaces with bare hands as skin oils cause hot spots leading to premature failure. For adaptive headlights with servo motors, ensure correct orientation during transfer. Some Cadillac headlights have integrated LED units that cannot be serviced requiring complete assembly replacement.
7. Install the new headlight assembly. Reverse the removal process by aligning the new headlight with mounting points ensuring all locating pins and tabs engage correctly in their respective slots. Push firmly into place listening and feeling for positive engagement. Refit all mounting bolts and tighten securely in a cross-pattern to ensure even pressure distribution but avoid overtightening which can crack plastic mounting bosses. Reconnect all electrical connections ensuring each clicks firmly into place with positive engagement. Test all lighting functions before final assembly including low beam, high beam, daytime running lights, indicators, and adaptive features if equipped. Check headlight alignment visually against wall or garage door at night and adjust if necessary using adjustment screws typically located on rear of assembly accessible through access holes in headlight housing.

Important Notes: Cadillac headlight replacement is straightforward on most models though luxury features add complexity. When installing aftermarket or replacement headlights, verify they include all necessary components as some units require transferring modules from original headlights. On newer Cadillac models with LED or adaptive IntelliBeam systems, headlights may require programming to vehicle computer to avoid dashboard warning lights and ensure proper operation. Professional calibration may be necessary for adaptive headlights to function correctly. Proper headlight alignment is crucial for optimal visibility and to avoid dazzling oncoming drivers. Cadillac dealerships can perform electronic calibration if required though many replacements work plug-and-play.

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How to Replace Cadillac Front Bumper

Replacing a Cadillac front bumper is achievable in 60-120 minutes depending on model complexity. This process covers Escalade SUVs, CT5 sedans, XT5 crossovers, and other Cadillac vehicles, though specific fixing locations and clip types vary between generations and luxury trim levels.

Step-by-Step Instructions:

1. Open the bonnet and secure it with the prop rod. Locate the upper bumper mounting fixings along the top edge behind the grille area and radiator support. Most Cadillac models have 6-10 bolts or screws securing the bumper from above depending on model and trim level. On Escalade SUVs, these are typically 10mm bolts along substantial radiator support structure. On CT5 and sedan models, expect T20 or T25 Torx screws or 8mm bolts across the top. On XT5 and crossover models, you'll find 6-8 fixings across the upper edge with possible additional clips. Remove all upper fixings systematically working from one side to other and keep organized by location as some may be different lengths.
2. Access the wheel arch areas on both sides. Turn the steering wheel fully to one side to maximize access to the wheel arch liner and create working space. Behind each front wheel, locate the plastic arch liner secured by screws and plastic push-clips. You may need to remove 4-6 screws or clips to fold back the liner sufficiently to expose side bumper mounting points. Cadillac uses various plastic clip types including push-pin clips that release by pressing center pin first then pulling entire clip, and twist-lock clips requiring quarter-turn rotation. Work carefully as arch liner clips break easily on older vehicles exposed to road salt and temperature cycles. Repeat process on both driver and passenger sides ensuring adequate access to side mounting points.
3. Remove the side mounting screws from both wheel arches. Behind each wheel arch liner, you'll find 2-4 screws or bolts securing each side of the bumper to the wing and chassis structure. These are usually 10mm bolts or 8mm screws on Cadillac models depending on year and trim. On Escalade SUVs, expect substantial bolts through metal brackets reflecting robust construction. On sedan models like CT5 and CTS, these are typically smaller screws through plastic mounting points with possible metal reinforcement plates. On crossover models, mounting hardware varies by generation. Remove all side fixings on both driver and passenger sides keeping track of different lengths and positions if applicable as incorrect reassembly causes alignment issues.
4. Remove undertray screws and lower bumper fixings. Safely raise the front of the vehicle using ramps or jack stands ensuring stability and proper support before working underneath. Locate and remove all screws and clips securing the engine undertray and lower edge of the bumper to chassis and subframe. Cadillac typically uses 10-20 fixings along the bottom edge depending on model size and complexity. These may be 8mm or 10mm bolts, plastic push-clips, or combination of both. On Escalade SUVs, substantial bolts secure the bumper to frame rails reflecting heavy-duty construction. On sedan and crossover models, plastic clips are more common with strategic bolt locations. You don't always need to fully remove the undertray but may need to drop it for access to bumper mounting points.
5. Disconnect fog lights, sensors, and electrical connections. Reach behind the bumper and disconnect all electrical connectors including fog lights if fitted as standard or optional equipment, parking sensor connections if equipped with parking assist typically 4-8 sensors across bumper depending on luxury specification, camera connections on newer models with forward collision warning or 360-degree camera systems, washer jet connections if washer nozzles are integrated into bumper cover, and any additional connections for grille shutters or active aerodynamics on performance models. Press release tabs carefully and pull straight out with firm steady pressure. Count connections as you disconnect ensuring complete reconnection during refitting. Label connections if unsure of positions as incorrect wiring causes warning lights and malfunctions.
6. Release the bumper side clips and mounting tabs. Cadillac bumpers are secured by plastic clips or metal brackets on each side that engage with the wings and front body structure. With all fixings removed, firmly but gently pull the bumper forward from one corner while supporting the opposite side to prevent dropping. You may need to wiggle slightly to release stubborn clips that may have seized over time. Listen for clicks as clips disengage from their mounting points. On some models, bumper tabs slot vertically into wing mounting points requiring upward lift while pulling forward. Work carefully as excessive force breaks mounting tabs on bumper or body requiring replacement or repair. On Escalade models, side clips are substantial and may require significant force to release.
7. Remove the bumper completely from the vehicle. With all fixings removed and clips released, carefully pull the bumper straight forward away from the vehicle with steady even pressure. Cadillac bumpers vary in weight with Escalade bumpers being substantial and heavy requiring two people for safe handling, while sedan bumpers like CT5 are lighter but still benefit from assistance due to size and to prevent scratching painted surfaces. Crossover bumpers fall between these extremes. Place the removed bumper on a protected surface such as cardboard, blankets, or foam padding to avoid scratching painted surfaces, damaging chrome trim, or breaking mounting tabs. Support bumper to prevent warping.
8. Prepare and fit the replacement bumper assembly. Before installation, transfer any brackets, trim pieces, grille components, fog light surrounds, tow hook covers, or emblems from the old bumper if not fitted to your replacement unit. Check all mounting tabs on new bumper are intact and not damaged during shipping as broken tabs prevent proper fitment. Verify chrome trim, mesh grilles, and luxury accents are properly secured. Align the new bumper with mounting points ensuring side clips are positioned correctly to engage properly with wing mounting slots. Push firmly into place listening and feeling for all clips to engage with distinct clicks indicating positive engagement. Reconnect all electrical connections including fog lights, parking sensors, cameras, washer jets, and any additional systems ensuring each connection clicks securely with positive engagement. Systematically secure with all screws, bolts, and clips in reverse order of removal working methodically to ensure nothing is missed. Tighten all fixings securely but avoid overtightening plastic mounting points which can crack under excessive torque. Test all electrical functions including fog lights, parking sensors, cameras, and washer jets before final assembly ensuring everything operates correctly. Check panel gaps are even on both sides and bumper sits flush with wings, bonnet, and body lines. On Escalade SUVs, verify bumper is level and properly aligned with substantial frame mounting points ensuring structural integrity.

Top Tips: Cadillac bumpers are designed for practical replacement though luxury features and premium materials add complexity compared to mainstream vehicles. When refitting parking sensors, ensure each is correctly aligned flush with bumper surface and seated fully in mounting holes with rubber seals properly positioned as misaligned sensors give false readings or constant warnings. On Escalade and large SUV models, bumpers are heavy and awkward to maneuver so two people make the job significantly easier, safer, and prevent damage to painted surfaces. Check all panel gaps between bumper, wings, grille, and bonnet are even before final tightening of all fixings as adjustment is difficult after complete assembly. Aftermarket bumpers may require minor adjustment of mounting tabs for perfect fitment as tolerances vary. On models with forward-facing cameras, radar for adaptive cruise control, collision avoidance, or automatic emergency braking, these systems may require recalibration at a Cadillac dealership after bumper replacement to ensure proper operation and avoid warning lights. Premium Cadillac models have sensitive safety systems requiring proper alignment.

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Common Cadillac Parts Problems & Solutions

Cadillac vehicles represent General Motors' luxury division with emphasis on premium features, advanced technology, and performance. J.D. Power ranked Cadillac second overall for 2024 vehicle dependability suggesting strong reliability, however Consumer Reports placed Cadillac 21st out of 22 brands with score of just 27/100, ranking second to last ahead only of Rivian at 14/100. RepairPal data shows Cadillac has $783 annual repair costs versus $652 industry average with 0.4 shop visits per year matching industry average and 17% severe repairs versus 12% industry average. This indicates Cadillac reliability is mixed with certain models performing well while others struggle particularly with advanced technology. Here are the most commonly reported Cadillac parts problems based on verified data from UK owners, Consumer Reports, J.D. Power, and industry specialists.

CUE Infotainment System Problems (2013-2017) - Widespread Issue:

• Touchscreen Failures and Delamination: The Cadillac User Experience CUE infotainment system fitted to ATS, CTS, SRX, XTS, and Escalade models from 2013-2017 is notorious for widespread failures causing massive owner frustration. The primary issue is touchscreen failure caused by delamination of gel adhesive between glass touch layer and LCD display screen creating gap between sensing electrodes. This causes unresponsive or frozen screen that won't react to touch inputs, cracked or bubbling screen from gel separation and pressure buildup, erratic cursor movement with screen randomly pressing buttons by itself, and complete black screen though system remains active to touch with temperature and radio controls working but display invisible. The screen literally presses buttons autonomously changing radio stations, adjusting climate control, and activating functions without user input making system unusable.
• Affected Models and Scope: CUE system problems affect 2013-2017 Cadillac ATS compact sedan, 2013-2019 Cadillac CTS midsize sedan, 2013-2016 Cadillac SRX crossover, 2013-2017 Cadillac XTS full-size sedan, 2015-2020 Cadillac Escalade full-size SUV, and other models equipped with first-generation CUE system. This represents hundreds of thousands of vehicles worldwide. The issue often manifests within first few years of ownership with many failures occurring just after warranty expiration at 3-4 years suggesting planned obsolescence concerns. Class-action lawsuits have been filed against General Motors over CUE system failures seeking civil remedy for expensive repair costs. Extended warranty coverage to 6 years or unlimited miles was provided through settlement for 2013-2016 models.
• Symptoms and Detection: Common signs of CUE failure include screen unresponsive to touch requiring hard resets, screen flashing on and off intermittently, blank black screen though backlight visible around edges, screen cracking or bubbling from internal delamination, system randomly activating functions and pressing buttons, radio controls, navigation, and HVAC controls becoming inaccessible, and rear camera not displaying when shifting into reverse creating safety hazard. Some owners report CUE screen needing replacement within first week of ownership on brand new vehicles. Hard reset procedure involves opening CUE faceplate, turning off vehicle, opening driver door for 30-60 seconds, closing door, restarting vehicle, and closing faceplate. This temporarily resolves software glitches but doesn't fix hardware failures.
• Repair Costs and Solutions: Cadillac dealerships charge $800-$1,500 for OEM CUE screen replacement including labor making this expensive repair for system failure. Independent shops offer aftermarket screens for $600-$900 with installation. Third-party companies like ISS Automotive and CUEscreens.com offer pre-programmed plug-and-play replacement screens with upgraded components addressing original design flaws for $400-$800 eliminating need for dealer coding. DIY repair involves purchasing digitizer conversion kit for $200-$400 to replace touch layer while retaining original LCD though installation requires patience and risks damaging LCD if mishandled. Many owners report multiple CUE replacements with same issues recurring suggesting fundamental design flaw rather than isolated defects. After multiple failures, some owners opt for third-party replacement units from Pioneer or Kenwood at $1,000-$2,000 bypassing CUE entirely with faster processors and wireless Apple CarPlay offering superior reliability.

Cadillac LYRIQ EV Reliability Issues (2023-2025) - Critical Problem:

• Catastrophic Early Reliability Failures: The Cadillac LYRIQ electric crossover launched 2023 as Cadillac's first purpose-built EV has experienced catastrophic reliability problems earning jaw-dropping Consumer Reports rating of just 5 out of 100, the lowest possible score and tied with Chevrolet Blazer EV as least reliable vehicles tested. One owner reported 18 separate problems in first 2,300 miles including battery dying three times in first 300 miles requiring repeated service visits and towing. Common issues include complete battery failures requiring replacement, charging system malfunctions preventing charging, electrical system glitches affecting multiple vehicle functions, infotainment system failures, and various teething problems with Ultium EV platform shared across GM electric vehicles. The LYRIQ represents Cadillac's EV flagship but early reliability has severely damaged reputation.
• Owner Experiences and Consequences: Multiple LYRIQ owners on forums report littered complaints about reliability troubles causing massive frustration and regret. Problems are not isolated incidents but common to Ultium platform products affecting multiple GM EVs. One owner stated the LYRIQ was worst car ever bought for reliability, sold their Escalade, and bought Toyota Sequoia instead vowing never to buy another GM vehicle. The catastrophic early reliability means owners are abandoning brand entirely switching to proven competitors. Cadillac should not have released untested vehicle to market with such widespread problems. While teething problems are expected on new platforms, the severity and frequency of LYRIQ issues exceeds normal acceptance levels suggesting inadequate testing before launch.

Magnetic Ride Control Suspension Failures:

• Expensive Adaptive Suspension Issues: Cadillac models equipped with Magnetic Ride Control adaptive suspension including Escalade, CTS-V, CT5-V, and performance variants experience failures of magnetorheological dampers. Symptoms include suspension warning lights, harsh or uncomfortable ride quality, clunking noises from suspension, and uneven ride height. Individual damper replacement costs £600-£1,200 per corner. Complete system replacement can exceed £3,000-£4,000. Magnetic Ride Control uses magnetically-controlled fluid in dampers that can fail requiring complete damper replacement as units cannot be rebuilt. While providing excellent ride quality when functional, repair costs are substantially higher than conventional suspension.

Northstar V8 Engine Problems (1990s-2000s Models):

• Head Gasket and Head Bolt Failures: Cadillac models equipped with Northstar V8 engines including De Ville, Seville, STS, and Eldorado from mid-1990s through mid-2000s are notorious for head gasket failures. The aluminum block and heads use head bolt design that pulls threads from aluminum block causing head gasket failure, coolant mixing with oil, overheating, and catastrophic engine damage. Symptoms include white smoke from exhaust, coolant loss without visible leaks, engine overheating, and oil contamination. Proper repair requires specialized thread inserts or complete engine removal for block repair costing £2,500-£5,000. Many owners simply add coolant regularly as workaround though this risks catastrophic engine failure. Later Northstar engines after 2000 had improved head bolt design reducing but not eliminating problems.

Electrical System and Module Failures:

• Body Control Module and Electronics: Cadillac vehicles with extensive electronics and luxury features experience various electrical problems including body control module failures, instrument cluster malfunctions, power window and seat failures, and various sensor issues. Symptoms vary widely from warning lights to complete loss of electrical functions. Diagnosis requires specialized equipment to identify failed modules. Repair costs range from £200-£1,500 depending on component. Complex electrical systems with numerous modules increase failure points compared to simpler vehicles.

Air Suspension Failures (Escalade and Luxury Models):

• Compressor and Strut Failures: Escalade models and other Cadillacs equipped with air suspension experience compressor failures, leaking air struts, and uneven ride height. Symptoms include sagging suspension especially after parking overnight, warning lights, harsh ride, and compressor running constantly. Air suspension repairs involve replacing struts at £400-£800 each, compressor at £600-£1,200, or complete system conversion to conventional coil springs at £1,500-£2,500. Air suspension provides excellent ride quality when functional but expensive to maintain compared to conventional suspension.

Timing Chain and Engine Issues (Various Models):

• Timing Chain Stretch and Guide Failures: Some Cadillac engines including 3.6L V6 used in CTS, SRX, and other models experience timing chain stretch and guide failures causing rattling noise on cold start, Check Engine light with timing-related codes, and potential catastrophic engine damage if chain jumps or breaks. Timing chain replacement requires engine disassembly and costs £1,500-£3,000 including labor. Regular oil changes help prevent premature wear but design issues affect certain engines regardless of maintenance.

Transmission Shudder and Problems:

• 8-Speed and 10-Speed Transmission Issues: Cadillac models sharing transmissions with Chevrolet and GMC siblings experience similar transmission problems including shuddering during acceleration, harsh shifting, delayed engagement, and potential transmission failure. Symptoms match widespread GM transmission issues affecting multiple brands. Repairs range from transmission fluid flush and software updates at £200-£500 to complete rebuild or replacement at £2,500-£4,500. Newer 10-speed transmissions show some improvements but issues persist.

Cadillac Reliability Assessment:

Highly Mixed Reliability Picture: Cadillac's reliability presents contradictory data requiring careful interpretation. J.D. Power ranked Cadillac second overall for 2024 vehicle dependability with 196 problems per 100 vehicles versus 190 industry average, indicating slightly above-average reliability. However, Consumer Reports placed Cadillac 21st out of 22 brands with score of just 27/100, second to last ahead only of Rivian. This dramatic discrepancy reflects different methodologies with J.D. Power measuring initial quality in first three years while Consumer Reports surveys longer-term reliability. RepairPal shows $783 annual repair costs versus $652 industry average, 0.4 shop visits per year matching industry average, and 17% severe repairs versus 12% industry average indicating higher costs when repairs needed.

Best and Worst Models: Top performers include XT6 with J.D. Power 84/100 Great rating, CT5 with J.D. Power 85/100 and zero recalls for 2025, XT5 scoring 48/100 Consumer Reports which is above average for American vehicles, and Escalade ESV ranking #4 out of 17 Most Reliable Luxury Large SUVs by iSeeCars. Problem models include LYRIQ with catastrophic 5/100 Consumer Reports rating representing worst possible score, 2013-2017 models with CUE infotainment failures affecting hundreds of thousands of vehicles, 1990s-2000s models with Northstar V8 head gasket issues, and early examples of new platforms experiencing teething problems.

Prevention and Maintenance: To maximize Cadillac reliability, research specific model year thoroughly before purchase avoiding known problem years like 2013-2017 CUE-equipped models, verify warranty coverage particularly extended coverage for expensive electronic systems, budget for higher repair costs due to luxury components and complexity, maintain rigorously following Cadillac service schedules, address warning lights immediately before minor issues become major failures, consider extended warranty on used Cadillacs particularly for electronics and complex systems, and choose proven reliable models like XT5, XT6, and CT5 over problematic LYRIQ or CUE-era vehicles. Despite issues with specific models and technologies, many Cadillacs provide satisfying luxury ownership with proper maintenance and realistic expectations about repair costs associated with premium vehicles.

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