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Professional Automotive Repair Technical Discussions for February 6, 2008 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1996 Buick Park Avenue 3.8L dome,door,lights VIN: 1G4CW52K8T My bookkeepers car...dome light, door lights will come on flash, for no apparent reason, day night makes no difference when where? Will flash for sometimes for five minutes go off for 15-20 sec. then back on. Until battery goes dead. No rhyme or reason. Can't ... |
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| 1997 Buick LeSabre Custom 3.8L pcm/ vats VIN: 1G4HPS2K5V This vehicle was driven in due to an intermittent cranks but no-start, or starts then dies symptom. Several days of operating the vehicle failed to yield symptoms, however, codes P1626 and P1629 were stored in the PCM. At that time we had the VATS module repla... |
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| 2000 Cadillac Seville SLS 4.6L block VIN: 1G6KS54Y2Y took waterpump housing/crossover off to find leak 4 seal dont appear to be leaking but coolnt appears to be coming out of between bellhousing and block between the two right side mounting bolts there is a bump in the bell hoising like theres a locating pin the... |
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| 2000 Cadillac Eldorado ESC 4.6L rack VIN: 111111111 hi guys, hope you can help on this one. came in no p/s to left. replaced rack & pump. evreything works fine, message on driver info center service steering system with every key on. hit reset will go out till key off than on. there is a sensor in rack. does it... |
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| 2006 Cadillac CTS 3.6L caliper bracket VIN: 1G6DP57736 Hello all, This cts Caddy has a rattle at low speeds and a slightly rough road. After checking Tsbs I put car on a lift. No TSBs for rattle. What I found is the left front caliper rattles. It is coming from the slides in the caliper bracket. The caliper bolts ... |
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| 1989 Chevrolet C1500 Cheyenne 5.7L master cyl VIN: 1GCDC14K8K first let me tell you guys that i appreciate your time and help. this one is kicking my butt we looked thru the archives to see if we missed something. we have installed a second new master cylinder and have in the last 5000 miles done a brake reline with cyli... |
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| 1995 Chevrolet Blazer 4.3L Poor Idle Quality, Surge, Cuts out, Stall, MIL Lamp on VIN: 1GNDT13W5S I would like to thank you in advance this one is fun. start this from cold ect at 60 iat at 62 truck will run and idle good let it warm up to about 150 or so and it will start serging at idle I have disconected iac still serges removed egr and cleaned and inst... Trouble codes: P0325 |
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| 1996 Chevrolet Tahoe LS 5.7L Cuts out VIN: 1GNEC13R9T Three weeks ago we put new injectors in to fix miss at idle.Was fine for a week.Then customer returned describing a periodic miss or transmission clunk.When driven it may take several miles or less to do it.It feels like ign. dropout.It hits once, and is very ... |
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| 1997 Chevrolet Monte Carlo Z34 3.4L Hesitation, Cuts out, Misfire VIN: 2G1WX12X6V hey guys and gals...problem child...no history/bought at auction...now i know why...cuts out at 3100 to 3200 rpm ALWAYS!!!acts like rev limiter..i know there's one in park and neutral...not supposed to be when driving...trans data...4 pids([...]/2xo volts)... |
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| 1997 Chevrolet C3500 Cheyenne 7.4L Cuts out VIN: 1GCHC33J0V in bay or under load will not go ver 2800 rpm without bacfiring . spitting , acts like a miss or rev limiter cutting out pings bad but all checks found good no missfire code but code for crank sensor sets but no check engine light has new css . dist. , all tun... |
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| 1998 Chevrolet K1500 Cheyenne 5.7L No Start, Stall, Misfire, MIL Lamp on VIN: 1GCEK19R5W okay, got one here thats making me a little lost. its a 1998 k1500 that only acts up when it feels like it. When it runs, it runs like a new truck but right now its acting like its jumped time. When you turn the truck over it pops and backfires just like the t... Trouble codes: P0300 |
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| 1998 Chevrolet Astro 4.3L No Start VIN: 1GCDM19W2W Truck came in won't start, customer want to tune up if needs. Charge battery, cranked up, starter & flywheel rear noisy, found flywheel missing teeth, Found TSB about this problem. Replace flywheel, starter with new crank sensor part #[...].Still the same, ... Trouble codes: P0338 (no hard start backfire Kickback during crank grinding.) |
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| 1999 Chevrolet K1500 LS 5.7L drive train VIN: 2GCEF19R6W I am a young tech needing advice. The chevy came in and it had a bad shift in it only at 60 to 75. I was thinking maybe the lockup touque convertor was slipping in a out but I put it in direct drive and it still does it. It mostly happens right when you let of... |
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| 2000 Chevrolet S10 2.2L Surge, Misfire VIN: 1GCCS1958Y surges |
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| 2005 Chevrolet Monte Carlo LS 3.4L No Start VIN: 2G1WW12E85 came into shop as a no start,we found it has spark,has proper fuel pressure-55-60psi,runs on carb cleaner,however noid light at injectors flashes dimly and irrattic,cam and crank sensors are ok,power to injectors is 11 volts cranking voltage drop test from inj... |
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| 2006 Chevrolet Suburban 1500 Z71 5.3L MIL Lamp on VIN: 1GNEC16Z16 This Suburban runs great but after 20 miles the check engine light will come back with P0172 and P0175 Fuel Trim Rich both banks. Originally it had an EVAP vent circuit fault but since the purge and vent soleniods were replaced the P0449 has not returned. Lon... Trouble codes: P0172 (Fuel Trim Rich Bank 1), P0175 (Fuel Trim Rich Bank 2) |
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| 2000 GMC Safari SL 4.3L Misfire, MIL Lamp on VIN: 1GTDM19W0Y We are scratching our heads on this one. This van belongs to a really good customer of ours and were trying not to let him down but this van is a pain in the @%#$. It has a miss at idle but seems to go away when you rev it up to abuot 2500 rpms. Its setting a ... Trouble codes: P0300 |
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| 2002 GMC Sonoma SL 4.3L convertor VIN: 1GTDT13W21 Looking for help fixing trans leak on 4L60E trans. Leak seems to be coming from convertor/frt pump area between engine and trans. First time out we replaced convertor seal even though it looked just fine,no visible damage. Still had same leak,removed trans aga... |
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| 2003 GMC Envoy XL SLE 4.2L MIL Lamp on, NO ACCELERATION VIN: P336225221 CHECK ENGINE LIGHT COMES ON AND REDUCED ENGINE POWER LIGHT COMES ON. NO ACCELERATION. ONLY CODE PO1125 )DESCRIPTION UNAVAILABLE. NO INFO AVAILABLE ON THIS CODE. THROTTLE ANGLE WILL NOT GO PAST 20% THINKING IT IS A PROBLEM WITH ETC SYSTEM . ANY INFO WOULD BE GR... Trouble codes: P1125 |
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| 2005 GMC Canyon Z85 SLE 3.5L Misfire VIN: 1GTDS13625 the misfire counter detects a miss on cylinder 2. 2-4 misfires per cycle. But I do not feel the miss. Any help is greatly appreciated Trouble codes: P0300 (random cylinder misfire) |
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| 1996 Oldsmobile Cutlass Supreme 3.4L electric cooling fans VIN: 1G3WH52X1T Customer complaint, engine cooling fan stays on sometimes after turning off key (NOT temp related... it's minus 25 degrees celcius here... #%@#!&^ cold...)will continue to run, ten minutes or more until the key is reinserted and turned to 'run' then stops stra... |
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| 2001 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH52891 hello saturn techs. hoping someone can give me and idea where to start or tell me if these things have ecm problems. i general only work on imports this is a little new to me. all i am getting is the codes that are listed. car runs fine no drivabilty problems.... Trouble codes: P0300 (multiple miss fire), P0326 (knock sensor 1 signal out of range), P1584 (cruise disabled circuit fault), P1599 (power management mode or engine stall), P1620 (low coolant circuit), P1624 (pcm ram performance or snap shot available) |
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| 2001 Saturn L300 3.0L oil pressure VIN: 1G8JW54R71 Group, Just performed plugs, oil service and filters on this 3.0 24valve engine. Customer returned few days later concerned with lifter noise in both banks. We confirmed. Oil used was 5w30 and oil filter was correct delco cartridge without nipple and o-ring l... |
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| 2004 Saturn Vue Red Line 3.5L Misfire VIN: 5GZCZ63454 We've got a 2004 Saturn Vue that has an intermitent skip on multiple cylinders but mostly occurs on cyl #2. At times it will run great and other times it will have a major skip. We've swapped coils with a good cyl. but the skip stayed on cylinder #2. Also, som... Trouble codes: P0300 (Multiple Misfire), P0301 (Cyl 1 Misfire), P0302 (Cyl 2 Misfire), P0304 (Cyl 4 Misfire), P0305 (Cyl 5 Misfire) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1966 Chevrolet El Camino 327CID Powerglide Trans Thank you all.I will explain why this vehicle is now "fixed". I had over 20 replies, and they were very quick in coming. Most had me recheck every thing that I did. A couple said that no matter what,the trans.had to come out. A very good reply was not to do a ... |
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| 1999 Chevrolet Silverado 2500 6.0L Mechanical VIN: 1GCGK29U8X Thanks for the replys. We started by flushing the p/s sys customer drove it and still acted up. So we installed a reman pump and got a belt 7/16 inch shorter than orginal. Customer is very happy everything working fine. He says the pedal is about 1 inch ... |
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| 2001 Chevrolet Silverado 2500 6.0L No Start VIN: 1GCHC29U21 It's fixed and gone. As it turned out, it was the fuel pump and my old analog amp meter is in the trash. I used my employees' Fluke and the amps showed nearly 12 after I completed the wiring repairs, plus the fuel pressure was only hitting 52 max. The new... |
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| 2007 Chevrolet Tahoe LTZ 5.3L MIL Lamp on VIN: 1GNFK13087 I RECIEVED MANY GOOD RESPONSES, UPON DUPLICATING THE CONDITION OF THE FUEL FILL PROBLEM, I REMOVED THE FILL HOSE AND CHECKED FOR RESTRICTIONS, THERE IS A VALVE WHERE THE FILL NECK GOES INTO THE TANK TO BLOCK FUEL FROM COMING OUT IF THE VEHICLE ROLLS OVER I CHE... Trouble codes: P0463. |
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| 1999 GMC Sierra 1500 SL 5.3L transfer case VIN: 1GTEK19T4X Hi Guys, sorry for late post, thanks to mike in Penn. and Dean in Wash., both nailed it, problem was bad encoder motor not turning enough to apply 4x4 high or low, not a cheap fix but fixed! Thanks for all your help, John |
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| 2000 GMC Savana 3500 5.7L Hesitation, Cuts out VIN: 1GTHG35R9Y thanks for replies..I got it to act up again in a brake torque situation and saw o2 b1 s1 going to 1.8volts.. disconnected o2 b1s1 and and problem would not reoccur,lt fuel trim numbers now stayed low and positive, I changed the o2 sensor b1s1 and drove seve... Trouble codes: P0340, P0137, P0132, P0172. |
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| 1989 Pontiac Firebird 2.8L Excessive Emissions, MIL Lamp on VIN: 1G2FS21S7K Thanks to all for the useful information,especially info from Rick from Ohio,which led me to double check MAP sensor.With ECM in diagnotic mode,MAP reading was barely in spec.(4 g/sec.)spec. being 4-7 g/sec. Once ECM was out of diagnostic mode reading would dr... Trouble codes: 45 (system rich). |
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| 2007 Saturn Sky 2.4L air bag VIN: 1G8MB35B27 We have started the lemon law process since the dealer has told us that its working normal. Since we filed an army of engineers is to look at the car on Feb. 15. I feel like they are having trouble with other cars also or they wou... |
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