Referring to General Motors' full-sized rear-wheel drive platform. This designation was used from 1936-1996. It includes such models as the Chevrolet Impala, Buick Roadmaster, Pontiac Bonneville, and Oldsmobile 88 Station Wagon (among others).

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2answers
383 views

Why did GM change the pressure rating of their coolant tank cap for existing vehicles?

GM has changed the part number for the radiator surge tank cap on vehicles that came from the factory with Dex-Cool. The new cap is 18 PSI (RC87 - part number 25713160), the old one for many vehicles ...
2
votes
4answers
1k views

Popping / Clunking noise coming from rear of vehicle

What could be causing a popping / clunking sound from the rear end of a 1996 Caprice? The sound is only present (or apparent at least) after the vehicle has been driven for a while and seems to ...
2
votes
1answer
1k views

Low beam headlights out, High beam working

The patient is a 1996 Chevrolet Caprice with dual-filament bulbs. Both filaments in both bulbs light up in high beam mode, but no filament on either bulb lights up in low beam mode. What could be ...
2
votes
1answer
99 views

Top off differential fluid

How do you top off / fill the differential on a 1996 Chevy Caprice? Can it be done without taking the cover off and changing the gasket? Any gotchas to watch out for?
1
vote
1answer
217 views

How do I check the fluid level in the rear end (differential) on a 1996 Caprice?

What is the procedure to check the fluid level in the rear differential? The RPO code for this particular rear end is G80.
1
vote
1answer
157 views

4L60E fluid change

I'm going to change the transmission fluid on a '96 B-Body with a 4L60E transmission and an LT1 engine. The transmission fluid pan does not have a drain plug. I'd rather not drop the pan unless I ...
1
vote
1answer
92 views

Coolant flush procedure?

I'm going to change the coolant on a '96 B-Body with an LT1 engine. It's got expired Dex-Cool in it (past the rated 5 year life). I want to get all the old coolant out in case it has turned to the ...
1
vote
1answer
120 views

1996 Caprice Classic rear end rub a little and jumps barely while backing up

I noticed that, when my ’96 Caprice is backing up on smooth concrete, it kind of grinds and jumped just barely. Is it my gears in rear end? Any other issues could cause this?
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votes
1answer
239 views

Transmission fluid and filter change: Miles or time? Or both?

I'm pretty sure the service schedule for replacing the transmission filter for a 94-96 B-Body with a 4L60E automatic transmission is an interval in miles only. I don't have the number handy at the ...