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TGPforums.com is now working again. It is still in archive status, meaning no new member registrations are allowed, but the forum is searchable without the need for a registered account.

I painted mine. Masked off the brake pad contact area. Held up pretty good 20+ years later, but I never drive it in winter.

It's that time. The oil leak in the rear main seal of my 1994 Cutlass Supreme SL with the 3.4L motor has gotten so bad that it needs to come out for repairs. In addition to this being in need of replacement, I am going to have the oil pan gasket replaced as well, along with the 3 coils and the alternator while the motor is out of the car. In addition to that, is there anything else anyone can think of that should be replaced while the motor is out, as this would be a golden opportunity to get it done. The engine compartment will also be degreased to clean up the big mess this leak has been making. It does not need a timing belt, water pump, or any intake manifold work as this was all done 5 years and 10,000 miles ago and no issues here.

Don't know how important this was to the corrosion resistance, but I forgot to mention I primed mine with Rustoleum Cold Galvanizing Compound spray. It worked surprisingly well as a primer on bare metal. It never chipped, flaked, or peeled. I don't know if it's the same formula today as the one I used a couple decades ago. Photos looks like it's now a smooth gray primer appearance, but mine was a very sparkly shiny bright metallic silver color. Almost looked like fine very fine glitter. Still have the can and looks like it's the same can as the current product though, so who knows.

You get it, you have those rims that visually open up the brake/suspension components much like the rims I have. When the rims and tires look good the rusty looking parts stand out. All the replacement parts for our 1st gens almost immediately flash rust out of the box and most 1st gen rims are mesh or solid so it never mattered, until 2026 when these are the "newest" classic antiques. I`m not trying to build a show car but something resembling a higher optioned factory 1 off that might show up at a show or randomly in traffic because the MPGs on a 3100.

UPDATE - I believe I may have found a shop with a mechanic having the experience to have worked on these motors that will do the job. My first hunch was to go to a Chevy dealership as the Lumina had these motors as well, those Z-34's you almost never see (?). As soon as they found out I was in no rush to get the car back, they were more open to the idea of working on it. I guess they thought I wanted it done yesterday. Not the case, anytime between now and July 22 will do........ Stay tuned

My 89 Grand Prix was not in use for many years, the radio degraded in that time. It started to give a lot of pops and bangs. So much it seems to have blown a front speaker in the few moments it has been turned on. The speaker is an easy fix, just remove the dash pad and screw a new one in (16054362 is replaced by 15173233 and can be easily found). My system is a 4 speaker with Remote control head 16075882, the optional Cassette+equalizer 16050912 and steering wheel controls. The amp and receiver (16072780) which is located above the glovebox is the one that typically causes issues. I found the documentation here on the forum, unfortunatley the link for the amp doesn't work anymore: But even better than documentation, I found a common cause and fix for the pops and bangs: I tried exactly this procedure: https://reattaowner.com/roj/component/content/article?id=198:radio-capacitor-replacement-instructions. The 6 green capacitors were indeed shot. I found d4x5mm (not d5x5mm), 1uF, 50V, 105°C replacement capacitors at RS and had a specialist to put them in. The radio now works well, only some very minor pops are still noticable when the volume is turned to 0. I am very happy with the result and recommend this fix. However, I did notice now that my FM tuner apparently only goes up to 104.05MHz... Scanning, or manual tuning to get past 104 make it jump to the bottom of the frequency band again. I wonder if anyone else had a similar issue or fix for this?

I know she's in good hand.

Stuff happens, post on the Aurora if you`d like. Ive always liked those.

Well I'm sad to say that she has gone to her new home in New York City guy has another 9C3 but it's pretty clapped out being a new york car but hes gonna keep this one in storage and hes taking it to New Jersey this summer to have some Company that does really good work undercoating And hes keeping it in storage during the Winter months so I believe it's going to a good home. It was a fun car and nice project now I've picked up a 1996 Oldsmobile Aurora with a bad transmission so you know what's gonna happen the entire drive train is gonna come out and be refreshed.

I bought this 1994 Cutlass Supreme from the auction and who ever had it didn't finish the swap but I found out it's a 3.8 out of a Grand Prix.

Don't forget. Like I said on FB that 99 gtp pcm will be plug and play on your lumina once it's swapped. No tuning or messing with antitheft needed

Hey Iv'e browsed around here for a long time, but just actually joined for much needed help. My rear pads are completely gone and have damagd my rotors pretty bad. I went to replace the pads and rotor but noticed the rear calipers have the e-brake attached to it. How do i remove the caliper with the e-brake in the rear? I think i can remove the cable but the actually ebrake unit itself in the the way of the caliper bolts. any help is appreciated, thanks!

Yup. That'll do it. Not the best/most efficient method--but that'll work. Pistons definitely twist back in--unless you remove the one nut and one washer, and pull the eBrake cable bracket. Pushing the piston STRAIGHT in with a c-clamp is a thousand times easier than spinning it back in, and there's no special tool needed. Instead of the huge friction from the large piston seal, you have very little friction from the small O-ring that seals the small threaded post that the e-brake cable bracket is secured to. It could not be easier--except to have a caliper that doesn't have the e-brake mechanism. All four of my rear calipers have had the pistons pushed straight back in, one car has been done two--three times as the pads have worn out. E-brakes and service brakes still work just fine. This does NOT destroy the calipers IF (big IF) you REMOVE THE NUT, WASHER, and BRACKET. No promises on this working on the newer-style calipers, but it certainly works on the first-gen style.

That is the official procedure. My way is far faster and easier.

i did the "remove backside stuff" method before.... i think i did something wrong though, because then it would never seal back there again. or maybe the caliper itself was already failing when i got to it. either way, i ended up replacing with the 94-up setup due to that.

'92? Caliper piston does NOT need to be TURNED back in. In fact, that's the most-difficult possible way to retract it. Remove one nut and one washer from back side of caliper--remove the little bracket that the park brake cable attaches to. Remove caliper from rotor. Secure so it doesn't hang from the brake hose. I pinch the rubber brake hose with a needle-nose vice grip or the special hose-pinching tools. (Can't do that with aftermarket steel braid-over-Teflon liner brake hoses!) Open the brake bleeder valve on that caliper. Push caliper piston back in with a C-clamp. The spinning is done by the shaft that the nut, washer, and bracket were attached to, not the piston. Brake fluid squirts out bleeder valve, might want to use a length of vacuum hose on the bleeder nipple to direct the fluid into a drain pan. DO NOT allow the old dirty brake fluid to push backwards through the system so that it contaminates the ABS hardware. Remember that the caliper is adjusted by REGULARLY USING THE PARK BRAKE, so if you go months at a time without setting the park brake, expect caliper problems.

L26 Swap Electrical portion C100 Connector, 96 Harness on left side, 95 Body harness on right side. Directions follows for harness changes: Cut E1 wire, reposition into A3 Connector. Run wire through fire wall and through A1 Port after disconnecting J2. Disconnect K1 and isolate. For K1, Battery Fused wire will need to be fused. I Spliced into the 60 Amp Maxi fuse circuit for the 3.4L Air pump circuit. Pump consumes 25Amp (No longer used). Spliced into a circuit requiring 15 amps for Sund Roof/power windows/locks/Digital Temp Control. Wire pulled from K1 DOHC Harness and reconnected into 1996 Regal harness circuit. Also Trans wiring. Verify Which harness you have on the 1996 trans. OBDII Conversion: Cut off OBDI Connector, Cut off OBDII connector from junkyard. Match up all colors the same. Orange to orange (needs to be fused into B+) Both Black wires spliced into OBDII Black wire, Tan to Tan. Note the purple wire is spliced into my Serial Data wire I fed through C100 connector from A1.

Well, that's not fun. Got all the aftermarket audio equipment pulled. Plugged in the factory radio and... sounds distorted on the left channel, right channel completely out. Pop sounds when I push the buttons. It worked fine when pulled 32-years ago, so I'm guessing something that ages has gone bad. Probably electrolytic capacitors. I've read there are some green ones that like to go bad and leak. I just learned today the amp/radio module is the same as used in GMT400 pickups. I guess that explains why these radios are modular and can be taken apart into smaller modules. Vehicles with the split radios used the same modules with cables connecting them.

Now in that same spot I see a coolant leak . Very small but it's there. I will be trying out some bar-seal stop leak on it in the hope this will stop it. Something else that's odd is, I had them change out the LOW COOLANT sensor for a new one, and the LOW COOLANT warning still went on anyway. The car is not low on coolant. Geez.