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Prev Professional Automotive Repair Technical Discussions for June 9, 2009
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Open Help Requests for GM
Help Request Answers
1992 Cadillac Seville 4.9L defroster VIN: 1G6KY53B6N
Ok for all you CADILLAC PRO's please HELP, This 1992 cadillac seville has been back to us now 4 times with same problem, When you are diving this car at any given time the front defroster will come on and the temp and range indicators go to a reading of this -...
1997 Chevrolet K2500 Cheyenne 6.5L Poor Idle Quality, Cuts out VIN: 1GCGK29F4V
We usually work on german cars, but some of you may have more info on this problem. The truck starts and runs fine when cold, however after warming up and been driven for a while, it idles rough. It will set following fault codes P1214 Injection timing offset,... Trouble codes: P0216 (Injection timing control circuit), P1214 (Injection pump offset), P0236 (TC boost system)
1997 Chevrolet Corvette 5.7L Extended Crank VIN: 1G1YY22G9V
This car has a very long crank before starting. If you let it sit 20 - 30 seconds it will then take 10 - 15 seconds of crank time before it will start. Fuel pressure was approx 60# KOEO and bleeds off immediately. I took the return line off at the regulator an...
2000 Chevrolet Astro 4.3L Hesitation VIN: 1GNDM19W2Y
Thanks for the help in advance. this van falls flat on its face when you hit the gas after steady ecceleration and giving it more gas. I found the computer not going into closed loop. all sensor test normal except the bank one sensor two is at .4 to .8 at all ...
2004 Chevrolet Malibu LS 3.5L door locks, alarm VIN: 1G1ZT54824
hey guys, i need a good chevy guy here. i have this 04 malibu and i have lost my way. the power locks will lock and unlock on their own, and the factory alarm will go off if you open the doors with out the key fob. the weird thing is that with the tech 2 i was...
2004 Chevrolet Cavalier 2.2L Excessive Emissions, No Start, Poor Idle Quality, Poor Fuel Economy, No power VIN: 1G1JC52F24
I have one of those great ECO techs. I will tell you before I get started that in the morning I am going to check the timing chain because I started this thing up cold this evening and it was rattling pretty good. So maybe a jumped a tooth or two? So here it ... Trouble codes: P0172 (Rich exhaust)
1998 GMC Jimmy Envoy 4.3L Mode door VIN: 1GKDT13W5W
I havent done much other than scan and reset the door sweep on this one because of dissassembly time and customer needing the car.I am hoping some one will have an idea from the symptoms so I may be prepaired when I take it apart to minimze downtime.Codes b040...
2005 GMC Envoy XL SLE 4.2L blend doors VIN: 1GKET12S54
Hi Guys has anybody came across no comtrols for air direction always on defrost and floor all electronic system thought it would be vacuum line older one but this all electronic... controls are comanding change but no blend door movement thanks in advance
1997 Pontiac Grand Prix GT 3.8L cooling fans inop VIN: 1G2WP12K1V
WE have done everything we can think of on this one. The cooling fans will not come on which leads to an over heat. We can turn them on using our Modis and by grounding the cooling fan relays. We can turn on both hign and low fans manually but they will not co...
2005 Pontiac Montana SV6 3.5L Engine noise VIN: 1GMDV33L85
Customer complains of intermittant lack of power and what he describes as a clicking noise from the engine. The noise actually sounds more like a squacking or oinking noise than a click. Tech2 shows that misfire counters are climbing slowly on cylinder #2 and ...
2003 Saturn Vue 3.0L Mechanical VIN: 5GZCZ63B23
Customer brought car in complaining of a vibration at certain speeds Drove it and get a vibration at 55 mph it is a very fast vibe and goes away when you let off the gas if anyone has experienced this please help thanks

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick LeSabre Custom 3.8L starter VIN: 1G4HP53L6N
Many thanks to all that responded. By utilizing all of your combined information, we were able to get this one back on the road again. We ohmed the key and installed the required resistors inline to the pass key module. That got the car running but still a no...
2004 Cadillac SRX 3.6L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GYEE63754
Thanks for the info everybody. We finally got this Caddy running like she should again. What we found was the convertor was broken down on Bank #2. This was causing enough backpressure to screw with the other bank. Since the car was seeing missfires on bank #2... Trouble codes: P0300 (random cylinder missfire detected), P0301, P0302, P0303 (missfire cylinder 3), P0304, P0306.
1987 Chevrolet G20 Chevy Van 5.0L Excessive Emissions VIN: 1GCEG25HOH
after repairing the vacum leak and replaceing tbi gasket.we took van back thru inspection and the co droped to .61 closer but not enough run some injector cleaner thru it and install a new o2 sensor again. then took truck thru inspection and this time it passe... Trouble codes: 45 (oxygen sensor).
1999 Chevrolet Express 2500 5.7L No Start, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on
Well its fixed for now. Ordered a new VCM and had it flashed, did the 30 min. relearn for security light and it fired right up. The P1345 came right back so i adjusted the distributor cleared the code and let it go. I'm hoping the only code it had was the P134... Trouble codes: P1345.
2003 GMC Envoy SLE 4.2L running VIN: 1GKDT13543
Thanks for everyones help. The problem was the wire harness that goes to the clutch fan, it was completly broken. Repaired the harness cleared the codes GOOD TO GO!!! Charlie
2002 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW12E52
Thanks for all the help but it ended up beening the bcm was getting water in it
2003 Pontiac Aztek 3.4L abs VIN: 3G7DA03E33
Thanks guys, we graphed all speed sensors, all showed normal, so I replaced abs module, test drove and graphed the speed sensors one more time, abs active at the same speed, but now the right front sensor pattern is real choppy, I tightend the pin connectors...
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