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How much does Buick GS 400 repair and maintenance cost?

The cost depends on your car, the type of service, and where you live. Here are estimates for a selection of Buick GS 400 services.

Service Estimate Savings Dealer Estimate Location
Service type Valve Cover Gasket Replacement for 1969 Buick GS 400 V8-6.6L Estimate $134 Savings 38.25% Dealer Estimate $218 Location Denver, CO
Service type Control Arm Assembly - Front Lower Left Replacement for 1968 Buick GS 400 V8-6.6L Estimate $292 Savings 45.19% Dealer Estimate $533 Location Denver, CO
Service type Shock Absorber - Front Replacement for 1969 Buick GS 400 V8-6.6L Estimate $350 Savings 46.05% Dealer Estimate $650 Location Denver, CO
Service type Wheel Bearings - Driver Side Rear Replacement for 1969 Buick GS 400 V8-6.6L Estimate $286 Savings 43.41% Dealer Estimate $506 Location Denver, CO
Service type Control Arm Assembly - Rear Lower Right Replacement for 1968 Buick GS 400 V8-6.6L Estimate $405 Savings 46.62% Dealer Estimate $760 Location Denver, CO
Service type Control Arm Assembly - Rear Upper Right Replacement for 1969 Buick GS 400 V8-6.6L Estimate $167 Savings 40.98% Dealer Estimate $284 Location Denver, CO
Service type Axle / CV Shaft Assembly - Passenger Side Rear Replacement for 1969 Buick GS 400 V8-6.6L Estimate $227 Savings 43.64% Dealer Estimate $403 Location Denver, CO
Service type Cabin Air Filter Replacement for 1968 Buick GS 400 V8-6.6L Estimate $99 Savings 32.68% Dealer Estimate $148 Location Denver, CO

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Answers to common Buick GS 400 questions

Q: Q: Check engine light coming on
Answered by Mia
Cold weather causes plastic and rubber components to contract. The intake manifold on my truck would expand and contract every winter, setting P0171 and P0174 lean codes. Then finally, this past winter, the manifold cracked (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-intake-manifold-gaskets). My guess is that...
Q: overheated and I cut it off started after cooling and died after a few min.
Answered by John
Your car doesn't have a timing belt, so it's not likely that it has "Jumped time." But if the car was low on coolant and overheating, it doesn't take much driving to do some engine damage. So it could be...
Q: How do you avoid the upper and lower A arm bushings from melting on a 1970 GS 455?
Answered by David
Hi there - yes, this is a very large engine, in a moderately-sized place, with lots of heat transfer issues! As you suggest, heat shields, or wrapping the exhaust manifold (headers?) with "heat wrap" to keep the heat inside the...
Q: Crankshaft sensor removal
Answered by Jessica
Hello, thank you for writing in. The crankshaft position sensor is located on the front of the engine. The hardest part is locating the sensor and removing in within tight quarters. You will find the sensor next to the drive...

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