The 2005 Rendezvous is a unibody crossover sharing GM's U-platform with the Venture/Montana vans. Known for catastrophic 3.4L engine failures and transmission cooler leaks that destroy both the engine and transmission if ignored.
Symptoms: White smoke from exhaust, especially on cold start, Milky oil on dipstick or under oil cap, Overheating with no external coolant leaks, Rough idle and misfires as coolant enters cylinders, Rapid coolant loss with no visible puddles
Fix: Lower intake manifold gasket replacement is the band-aid (6-8 hrs labor), but if coolant mixed with oil for any length of time, expect bearing damage, requiring full engine rebuild or replacement. Many shops won't touch a rebuild on these—short block swap is common. Total job 18-24 hrs labor for engine R&R.
Estimated cost: $3,500-6,500
Transmission Oil Cooler Line Failure at Radiator (Cross-Contamination)
Common · high severity
Typical onset: 90,000-150,000 mi
Symptoms: Pink milkshake appearance in coolant overflow tank, Transmission slipping or harsh shifts suddenly, Coolant level dropping, transmission fluid level rising, Engine overheating after transmission starts slipping
Fix: Internal leak in radiator allows ATF and coolant to mix. Requires radiator replacement, complete transmission fluid flush (multiple cycles), new cooler lines, and often transmission rebuild because coolant destroys clutch packs and valve body. If caught early (within days), flush may save it—6 hrs. If driven after mixing, add 12-16 hrs for trans rebuild.
Symptoms: Coolant seeping from front or rear of engine valley, Sweet smell from engine bay when warm, Gradual coolant loss requiring top-offs every few weeks, No overheating yet, but slow drip under vehicle after parking
Fix: Early-stage version of the catastrophic failure above. Replace lower intake gaskets, flush Dexcool, inspect for oil contamination. If oil is still clean, this is a 6-8 hr job that prevents engine destruction. Use updated Fel-Pro gaskets, not OEM.
Estimated cost: $800-1,400
Transmission Mount Collapse (Severe Vibration)
Common · low severity
Typical onset: 60,000-100,000 mi
Symptoms: Violent clunk when shifting from Park to Drive or Reverse, Vibration at idle that smooths out when shifted to Neutral, Excessive engine movement visible from under hood during acceleration, Steering wheel shakes at idle with A/C on
Fix: Hydraulic transmission mount fails, allowing powertrain to rock excessively. Mount replacement is 1.5-2 hrs labor, straightforward. Often accompanied by worn engine torque strut mount—replace both at same time for 3 hrs total.
Estimated cost: $250-500
Fuel Pump Failure (No-Start)
Occasional · high severity
Typical onset: 100,000-150,000 mi
Symptoms: Crank no-start with no fuel pressure, Intermittent stalling when fuel tank below 1/4 full, Whining noise from rear of vehicle before failure, Dies after running fine, won't restart for 20-30 minutes
Fix: Fuel pump assembly replacement requires dropping tank. 3-4 hrs labor. Use AC Delco or Delphi pump—aftermarket failures within 12 months are common. Replace fuel filter at same time if accessible (some are in-tank).
Symptoms: ABS light on with codes for wheel speed sensors, ABS activates on dry pavement at low speeds (pulsing brake pedal), Traction control light illuminated, Sometimes clears temporarily after sitting overnight
Fix: Rear wheel speed sensors corrode at connector or sensor itself. Sensor replacement is 1 hr per side. If ABS module has internal corrosion, replacement or rebuild required—module is 2 hrs labor, $400-800 for reman unit. Always check connectors before replacing module.
Estimated cost: $200-1,200
Owner tips
If buying used, pull dipstick and oil cap FIRST—any milky residue or coolant smell means walk away, engine is already damaged
Check coolant overflow for pink tint (ATF contamination from cooler leak)—this is a $4,000+ repair waiting to happen
Flush Dexcool and switch to conventional coolant with updated intake gaskets—Dexcool is corrosive in these engines
Budget $1,500 in the first year for intake gaskets if not already done—it's when, not if
The 3.5L and 3.6L engines don't have the same intake gasket plague, but transmission cooler failure affects all engine options
Hard pass unless under $2,000 and you're prepared for a $4,000-6,000 engine/transmission double-failure—this platform has two catastrophic Achilles heels that often happen simultaneously.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Side post terminals standard on GM vehicles; battery located under hood
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2002-2007 Buick Rendezvous — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Electronic Brake Control Module (EBCM)1.8 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Engine compartment, driver side inner fender area, mounted to ABS hydraulic unit
🔧 GM Tech 2
⚠️ Brake bleeding and automated bleed procedure required after replacement; no VIN programming needed
Body Control Module (BCM)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind center console, below radio/HVAC assembly, accessible from passenger side
🔧 GM Tech 2 with TIS2000/SPS
⚠️ VIN programming required; controls PassLock II theft deterrent; must perform 10-minute relearn after programming
📍 Under driver seat, mounted to seat frame (when equipped)
🔧 Manual reprogramming
⚠️ Optional on CXL models; memory positions must be manually reset by driver after replacement
Transmission Control Module (TCM)no coding
📍 Integrated within PCM (4T65-E transmission)
⚠️ TCM function integrated into PCM; no separate module
Theft Deterrent Module (TDM)no coding
📍 Function integrated within BCM
⚠️ PassLock II system integrated into BCM; no separate module
Electronic Power Steering Control Module (PSMC)no coding
📍 Not equipped - hydraulic power steering only
⚠️ Rendezvous uses conventional hydraulic power steering; no electronic module
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
Consequence: FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.
Remedy: DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007. OWNERS CAN CONTACT DELPHI AT 877-411-8770.
AIR BAGS:FRONTAL · 06V417000
2006-10-31
CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED. TESTING HAS INDICATED THAT THE AFTERMARKET LEATHER SEAT COVERS CAN CAUSE THE PASSENGER SENSING SYSTEM TO MALFUNCTION.
Consequence: IF THE PASSENGER SENSING SYSTEM MALFUNCTIONS, THE FRONT AIR BAG ON THE PASSENGER SIDE MAY BE DISABLED WHEN IT SHOULD BE ENABLED, OR ENABLED WHEN IT SHOULD BE DISABLED. IN EITHER CASE, IN THE EVENT OF A CRASH THAT REQUIRES AIR BAG DEPLOYMENT, A FRONT PASSENGER'S LEVEL OF INJURY MAY BE INCREASED.
Remedy: BECAUSE A REPLACEMENT LEATHER SEAT COVER THAT IS COMPATIBLE WITH THE PASSENGER SENSING SYSTEM IS NOT AVAILABLE, GENERAL MOTORS (GM) WILL REPURCHASE THESE VEHICLES IN ACCORDANCE WITH THE TERMS STATED IN GM'S LETTER TO OWNERS. THE RECALL BEGAN ON NOVEMBER 6, 2006. OWNERS SHOULD CONTACT GM AT 1-877-477-1022 TO BEGIN THE PROCESS OF REPURCHASING THEIR VEHICLE.
Fuel economy (EPA)
City
16mpg
Highway
24mpg
Combined
19mpg
Fuel
Regular Gasoline
Capability & size
EPA class
Sport Utility Vehicle - 2WD
Wiper blades
Crossover SUV with rear wiper. Both front wipers are the same length.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2005 Buick Rendezvous 3.6L V6 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.