2003 Buick Rendezvous Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

17 Coolant / Antifreeze parts for the 2003 Buick Rendezvous come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the bleeders used to purge air from the coolant circuit. Read more

One part is listed for the 2003 Buick Rendezvous — DORMAN 902112.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

6 Coolant Hose / Pipe parts for the 2003 Buick Rendezvous come from 5 brands — GM GENUINE, ACDELCO, GATES and 2 other brands. The "Popular" part is ACDELCO 14156S.

Listed part numbers: ACDELCO 14156S, GATES 19026 and CONTINENTAL 63121, plus the other parts above.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Coolant Hose / Pipe Seal parts are listed for the 2003 Buick Rendezvous, from APEX and FEL-PRO.

This group includes APEX ADM1403 and FEL-PRO 70799.

This table covers the Coolant Reservoir retainers and clips. Read more

2 Coolant Reservoir Retainer / Clip parts for the 2003 Buick Rendezvous come from DORMAN.

This group includes DORMAN 700579 and DORMAN 961359.

This table covers the Cooling Fan control modules. Read more

US MOTOR WORKS supplies the 3 Cooling Fan Control Module parts for the 2003 Buick Rendezvous.

Listed part numbers: US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts for the 2003 Buick Rendezvous come from 3 brands — ACDELCO, GATES and MOTORAD.

Part numbers include ACDELCO 12A01, GATES 31413 and MOTORAD 3003.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

14 Radiator parts for the 2003 Buick Rendezvous come from 11 brands — TYC, FVP, OSC and 8 other brands. The "Popular" part is CSF 3448.

The Economy section: 1 option from FAMOUS BRAND. FAMOUS BRAND 432351 is listed in this group.

Standard Replacement: 13 parts, from TYC, FVP, OSC and 7 other brands. A representative part number is CSF 3448.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

9 Radiator Cap parts for the 2003 Buick Rendezvous come from 6 brands — MOTORAD, CALORSTAT, GATES and 3 other brands. The "Popular" part is MOTORAD ST16V.

In the Locking Replacement grade, CALORSTAT, MOTORAD and GATES supply 4 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST16V.

Standard Replacement: 5 parts, from GATES, ACDELCO, CSF and 2 other brands. A representative part number is GATES 31523.

This group includes MOTORAD ST16V, CALORSTAT RC0214 and CALORSTAT RC0217 and the remaining parts above.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

5 Radiator Fan Assembly parts are listed for the 2003 Buick Rendezvous, from GPD, TYC and FOUR SEASONS. FOUR SEASONS 75365 carries the "Popular" badge.

Economy: 2 parts, from GPD. A representative part number is GPD 2811535.

The Standard Replacement section: 3 options from TYC and FOUR SEASONS. FOUR SEASONS 75365 is listed in this group.

Listed part numbers: FOUR SEASONS 75365, GPD 2811535 and GPD 2811536, plus the other parts above.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

7 Radiator Fan Motor parts for the 2003 Buick Rendezvous come from 3 brands — FOUR SEASONS, ACDELCO and VDO / CONTINENTAL. The "Popular" part is FOUR SEASONS 35389.

Listed part numbers: FOUR SEASONS 35389, FOUR SEASONS 35377 and ACDELCO 10427837, plus the other parts above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

8 Radiator Hose parts are listed for the 2003 Buick Rendezvous, from DAYCO, ACDELCO, CONTINENTAL and 1 other brand. DAYCO 71950 carries the "Popular" badge.

Listed part numbers: DAYCO 71950, DAYCO 71949 and ACDELCO 26351X, plus the other parts above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

DORMAN supplies both parts for the 2003 Buick Rendezvous.

Listed part numbers: DORMAN 700614 and DORMAN 963230D.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

22 Temperature Sender / Sensor parts for the 2003 Buick Rendezvous come from 17 brands — STANDARD MOTOR PRODUCTS, NTK, WALKER PRODUCTS and 14 other brands. The "Popular" part is NTK EF0008.

The Economy section: 8 options from NTK, STANDARD MOTOR PRODUCTS, GPD and 5 other brands. NTK EF0008 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191012 is listed in this group.

Standard Replacement: 13 parts, from STANDARD MOTOR PRODUCTS, WELLS, ACDELCO and 8 other brands. A representative part number is ACDELCO 1551107.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

21 Thermostat parts are listed for the 2003 Buick Rendezvous, from MOTORAD, CALORSTAT, GM GENUINE and 3 other brands. GATES 33329 carries the "Popular" badge.

The Heavy Duty section: 2 options from MOTORAD. MOTORAD 5267195 is listed in this group.

In the Performance grade, MOTORAD supplies 2 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2067180.

The Premium section: 3 options from MOTORAD. MOTORAD 7267195 is listed in this group.

The Standard Replacement section: 14 options from CALORSTAT, MOTORAD, GM GENUINE and 3 other brands. GATES 33329 is listed in this group.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

6 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2003 Buick Rendezvous come from 6 brands — FEL-PRO, GATES, APEX and 3 other brands. The "Popular" part is FEL-PRO 35614.

Listed part numbers: FEL-PRO 35614, GATES 33611 and APEX AWO2041, plus the other parts above.

This table covers the housings and outlets the thermostat sits in. Read more

5 Thermostat Housing / Water Outlet parts are listed for the 2003 Buick Rendezvous, from DORMAN, FAMOUS BRAND, GPD and 2 other brands. MOTORAD CH5166 carries the "Popular" badge.

Economy: 3 parts, from DORMAN, FAMOUS BRAND and GPD. A representative part number is DORMAN 9022004.

The Standard Replacement section: 2 options from MOTORAD and FOUR SEASONS. MOTORAD CH5166 is listed in this group.

Part numbers include MOTORAD CH5166, DORMAN 9022004 and FAMOUS BRAND 85166, among others listed above.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

9 Water Pump parts are listed for the 2003 Buick Rendezvous, from FVP, SKP, US MOTOR WORKS and 6 other brands. ACDELCO 252721 carries the "Popular" badge.

Economy: 4 parts, from FVP, SKP, US MOTOR WORKS and 1 other brand. A representative part number is FVP US5033.

The Standard Replacement section: 5 options from ACDELCO, GATES, DAYCO and 2 other brands. ACDELCO 252721 is listed in this group.

Listed part numbers: ACDELCO 252721, FVP US5033 and SKP SK1301480, plus the other parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Water Pump Gasket parts for the 2003 Buick Rendezvous come from 5 brands — FEL-PRO, APEX, GM GENUINE and 2 other brands. The "Popular" part is FEL-PRO 35403.

This group includes FEL-PRO 35403, APEX AWP3010 and GM GENUINE 2512018 and the remaining parts above.

This table covers the Water Pump pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

This group shows a single part: DORMAN 300933.

This table covers the Water Pump Stud kits. Read more

One part is listed for the 2003 Buick Rendezvous — DORMAN 902806.