Cadillac Jim

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Cadillac Jim last won the day on February 27

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About Cadillac Jim

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    Cadillac: Comfort, safety, and competence
  • Birthday 09/22/2015

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    South Jersey
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    Handling, performance, reliability, maintenance, photography, math, science, physics, engineering, Cadillacs

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  • Car Model and Year
    2011 CTS-V Sedan
  • Engine
    Supercharged 6.2L (LSA)

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  1. Uh, like BBF needs anyone to back him up, but as an outsider in this thread I do think I have something that might help out here. Whenever the battery voltage drops below 9 Volts during cranking (or any other time, like sitting at a long light at night with the headlights and A/C running...), some modules will start throwing bogus codes. At least two of them will throw "Battery voltage low" codes to make sure the tech knows to ignore ALL the codes, charge or replace the battery (or fix bad connections), clear all the codes, and start over. Things that can cause voltage to the modules to drop below 9 Volts when the battery is new: Wrong battery -- too small, or one with not enough cranking power; or an ordinary battery when the car is designed for an AGM battery Corrosion on either battery cable connections to the battery Bad battery ground on either the engine block or on the car body Dragging starter or something on engine dragging or seized Battery too cold to start engine easily, particularly while engine is dragging due to extreme cold Engine taking far too long to start for any reason Bad connection or cracked Maxifuse or fuse Bad ground on module(s)
  2. BBF, next time you get in a tight spot and need an FSM for 2002-2012, send me a PM (I'll get an email). KingCadillac: The 4T80E has its own FSM separate from the one for the rest of the car. If you're doing significant internal work on a 4T80E, you need this manual. Anytime I take one down beyond the solenoids and such, I recommend a rebuild. That way you get seals, thrust washers, clutches, etc. and end up with essentially a new transmission. On an old transmission, anything less is really just a patch. The torque converter is not part of most rebuild kits and is purchased separately. You should change it too because the parts involving the electronically controlled torque converter clutch wear out too, and in fact that is a common failure in old 4T80Es. Note that the TCC vicious clutch "was replaced with EC3 (electronically controlled converter clutch) in 2004." (Wikipedia) If you want to cut your losses, a used 4T80E from a recycling yard is an option. Be sure and get the right one for your year. Otherwise the connectors may not match up. BBF will have more insight on that.
  3. I have the 06 DTS service manual on DVD. I believe that the question is where the battery grounds are. From the FSM, the main battery ground cable is G303, "Battery negative cable ground, under the rear seat on the right floor pan" while there is another ground cable wire, if a smaller gauge. The FSM schematic from starting circuits is attached. My IE has updated to the point that the GM SI TIFF viewer isn't there anymore. I'm trying to re-install it...OK. The smaller battery ground wire goes to the BCM, apparently as a BCM ground. It seems that there is an engine ground strap, between G110 "In the engine compartment, right side ground strap to the right frame rail below underhood - fuse block", and G111 "In the engine compartment, right side ground strap to the right frame rail below underhood - fuse block". Since they say "right side" there may be another ground strap.
  4. From memory from my 1997 Eldorado, the battery ground cable is double. One full-size black cable goes to the body or frame, the other goes to the engine block somewhere. This means that you don't need an engine ground strap. This is important because the starter motor and solenoid is in the "lifter valley" which is available in DOHC V8 engines, and one of three battery positive cables goes directly to the starter solenoid. This puts solid connections of both battery cables right to the starter motor. I can get my 1997 FSM from the garage if needed, but BBF has a 1996 FSM that will be identical here. NOTE: I had a good mechanic do a Northstar engine swap some years ago, and he stretched the wiring harness where it connects to the ABS and ruined the connector. He patched it and didn't tell me. Some time later it started giving trouble and it took months to find it. BBF helped me find the parts to fix the connector. A dealer found a wire pulled out of a connector and just pushed back in an fixed that to end the problem. This is a big argument to support what BBF says about being very careful about cables and wires when you drop the cradle. Another might take this incident as an argument for DIY. I had it done because I needed the car every day and didn't have time for a project.
  5. If you have OnStar, push the black button and ask the lady to read you the OBD codes and write them down and post them here. You can ask her to email them to you, which might be simpler and avoid an error in writing them down. If you don't have OnStar, find and Autozone near you and ask them to read your OBD codes for you. Look at the sticker on the underside of your spare tire compartment cover and write down the RPO codes related to your radio. I would take a cell phone photo of that sticker, which has all your RPO codes, paint numbers, etc., and keep that photo on my computer for reference. The radio codes for the 2007 CTS are (this list may not be totally complete because I just now picked it out of the FSM): UAV Infotainment System 005.1 U2J Digital Audio System S-Band, Not Installed U2K Digital Audio System S-Band U2R Infotainment System 001 U2S Infotainment System 002 U2X Infotainment System 007 U2Y Infotainment System 008 U57 Speaker System 8, Dual F/D Pillar, Dual FRT DR MTD, Dual RR DR MTD, Subwoof PKG Shelf, I/P CTR, Amplif, Bose U66 Speaker System 7, Custom We will need that information to get the right schematics in the factory shop manual (FSM). If you have a Volt/Ohm meter, you can check for power at the radio and a good ground. Power to the radio is through the RD/WH wire, ground is through the BK/WH wire. If you have premium audo (Bose, probably) you have the 30 Amp AMP fuse with power directly to the power amp on the RD/BK wire. If there is more than a small fraction of an Ohm resistance from the BK/WH wire to chassis, check ground G402, which is In the rear compartment, to the rear of the left rear shock tower, below audio AMP.
  6. There are two fuses in the rear fuse block. After you try rockfangd's solution, which will restart any modules that have locked up, you can look for a 10 Amp AUDIO fuse and a 30 Amp AMP fuse. Since the whole radio went black, the 10 Amp fuse is the first one I would look at.
  7. Two things occur to me: the car's network connector (the PPL wire), and the three power connections: always on (RED), on in start and run (PNK), and ground (BLK). There are the speaker connections, too. There is also the dimmed power connector (I forget the color) and the speaker connections. I would start by making sure that the radio has a good ground, then the two hot connections. If the factory radio has been flaky, I would check for cracked fuses. If you have a voltmeter, check for A/C voltage across the speaker connections at the radio. If there is a current real-world problem with a 1996 Deville, someone with a 1996 FSM can step up, or I can locate my 1997 FSM and scan the radio schematics to identify all the wires and their colors. You may need to know the factory option for the stock radio. The RPO numbers are on a sticker under the spare tire cover. If that is missing, an internet search on your VIN may turn up such a list for your car. The radio options are of the format U1x, where x is another letter or number, or, for premium radios, Unx, where n is another number besides 1.
  8. From the FSM schematic, the rear left, or driver's side, tail/stop/turn lamp circuit is identical to that of the right side. EXCEPT for the ground, a BK wire going to G402 (BK wire tied to body behind the back seat, high, near the door frame), the trailer connector (check it for pinched wires or shorts), and its own connector on the BCM (check for pushed-in terminals in the connector). There are three fuses in the underhood fuse block that provide power to the BCM, BCM 4, 5 and 6, all 10 Amp. One of them may be for the left rear. Since the rear lights have a trailer connector, I'm sure that each side has its own fuse, probably BCM 4 and BCM 5. Does the dashboard flasher arrow for left turns work? If it turns on at all, the problem is probably in the connector or the ground. You have already checked the light itself. EDIT: Usually I ask people to check their OBD codes first, but on your car and mine you can't do that yourself from the driver's seat. You can ask the OnStar operator to ready you the codes (and email them to you!) or you can use a code reader. This problem seems pretty straightforward if you have the schematics, which I do, on a GM SI DVD. But this goes on for much at all, and we can't get 12 Volts to at least one of the YE wires to the left rear tail/stop/turn signal lights, the fuses are good, and the trailer connector isn't shorted, we will want the OBD codes. You can check the ground by putting a voltmeter on the BK wire on the left stop/tail/turn light; if there is 12 Volts on either or both of the YE wires but the BK ground line has zero volts when the dashboard flasher arrow is on or blinking, then the logic in the taillight assembly may be bad. Autozone and others offer to read your OBD codes free.
  9. The Allante intake/fuel injection for the 4.5 gave it 200 hp, and the Allante kept that engine when the 4.9 came out. That's known to give a performance boost with minimal or no problems while an engine switch is... an engine switch. Engine cooling and lubrication such as the oil-cooled piston skirts may not be sufficient for 150 hp more than what the engine was designed for. It really takes a clean sheet of paper to do a supercharged engine that has sufficient reliability to actually drive normally on the streets and highway. The STS-V, for model years 2005-2009 model years, used a 4.4 liter supercharged Northstar that is rated at 465 hp. A full swap of engine/transmission/ECM may or may not be feasible. EDIT: I don't have a parts manual that has both the regular 4.5 l and the Allante special 4.5 l, but I would consult one to make sure that they have the same cam timing and lift, and the same valve sizes. If not, you can decide whether to update the cam and heads to match the Allante intake/fuel injection.
  10. The first thing I would do is run the OBD codes to see what the car's computers think. See the link in my signature block for a Caddyinfo page on reading your OBD codes. If the car passes emissions testing, that means that it has no current emissions codes, not that there are no problems. Nearly always, if the Check Engine light is off, the car will pass emissions testing as it is done lately. There may be History codes or intermittent problems, or there may be something that is not detected by the car's OBD system. But often a check of History OBD codes and codes other than emissions codes will tell you something important, occasionally about a problem that you weren't aware of. If there are not OBD codes that reflect on your problem, I would check the plug wires, the coils, the crank sensors, MAP sensor, and also for clogging in the catalytic converter. If you are mechanically inclined, you might check the plugs for odd or non-uniform appearance, but be aware that anti-seize compound and silicone plug boot compound must be used when replacing the plugs, and proper torque must be used. A real code reader that provides misfire counts by cylinder can be helpful in identifying plug, ignition wire, or coil problems. Each coil fires two cylinders, and problems on both for a particular coil point to the coil as opposed to the plugs or wires. Moving wires from coil to coil can verify that a coil is bad - or good, but the wires or plugs are bad.
  11. Does the shift lever drive the shift valve in the proper position as shown in the shift indicator? The two missing pictures labeled Object Number 97542/97544 are below: Checking the other parts requires removal and disassembly of the transmission. If the external adjustments, fresh Dexron VI, etc. don't work for you then I would suggest that you commit to a transmission exchange or overhaul. If you do internal automatic transmission work yourself, perhaps someone else can step up here. I do suggest that you be prepared for clean, well lighted indoor workspace with a complete factory overhaul manual for the 4T80E before you start.
  12. Is this with the front wheels off the ground and engine at idle? When the wheels are on the ground and you give it a bit of throttle in Reverse, does the car move forward? Does the car surge against the Park pawl when you give it a bit of throttle in Park? This is the FSM entry for "Forward motion in N: Checks Causes DEFINITION: Forward Motion in Neutral Forward Clutch Housing Feed hole plugged, inspect tower Forward Clutch Piston Jammed Forward Clutch Plates Seized or jammed Forward Clutch Springs Jammed Forward/Coast Clutch Support Hub Holes plugged Manual Valve Mispositioned or stuck Shift Linkage • Mispositioned • Disconnected The only do-it-in-the-driveway DIY check that is listed is to check the shift linkage. The FSM drawing of the cable attachment to the transmission: 1 - where the cable attaches to the transmission. This may be disconnected in your case. 2 - cable holder, with adjustment. The FSM adjustment process follows. Range Selector Lever Cable Adjustment Notice: Adjust the shift control cable only while the transaxle and the gear selector are in NEUTRAL. Failure to do so may cause mis-adjustment. Set the parking brake and chock the wheels. Remove the shift cable terminal from the transmission manual shaft lever pin. Pry on the shift cable terminal at the manual shaft lever pin with an appropriate tool. Prying or pulling up on any other part of the shift cable may result in damage to the shift cable . Fully lift the adjuster lock button. Ensure that the adjuster is free to move. Place the transmission manual shaft lever in (N) Neutral. In order to find (N) Neutral, rotate the lever fully counterclockwise to (P) Park, and then clockwise 2 clicks into (N) Neutral. Place the gear shifter inside the car to the (N) Neutral position. Use the transmission shift indicator on the console to find (N) Neutral. From under the hood, grasp the shift cable terminal and pull it toward the pin on the manual shaft lever. The shift cable adjuster spring should compress as the terminal is moved toward the pin. Attach the pin to the lever by pushing down carefully until it snaps. Do not pull the terminal beyond the pin and then push back. This action could move the shifter out of (N) Neutral. Press the adjuster lock button down flush with the adjuster body. Shift to (P) Park and release the parking brake while applying the service brake. Start the engine and assure all of the indicated gear positions match the vehicle response.
  13. You can start by removing the key from the keychain and use the key without a lot of weight hanging off of it. Or, the key resistor may be dirty or worn. If so, you can solve the problem by cleaning the resistor contacts or, at worst, with a new key. Sometimes this problem is caused by the contacts for the resistor wearing out within the steering wheel mechanism. That's a significant repair problem. I would try a new key first. There is a link to a spreadsheet with OBD codes and lots of other information about the 1997 model year Cadillacs.
  14. Update on December 9, 2018 - a new CarFAX shows that the car still is in my name, over five years after being sold. NEVER let someone leave with a signed-over title. Get their signature and information on the title and put it in for re-registering yourself. This is why car dealers do all the paperwork and never let the buyer have the title to file.