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Prev Professional Automotive Repair Technical Discussions for November 13, 2008
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Open Help Requests for GM
Help Request Answers
1995 Cadillac Fleetwood 5.7L cooling fans stay on VIN: 1G6DW52P1S
customer complaint heat not hot. found cooling fans run any time engine is running. fans are being commaned on through pcm. i can turn the fans off for about five seconds through the tech 2 witch tells me no relays are sticking & wiring is ok. there is no a/c ... Trouble codes: 43 (knock sensor circuit)
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1996 Cadillac Seville SLS 4.6L heat VIN: 1G6KS52YXT
Hey guys, this cadillac temp will change on the pass. side, but the drivers side will not get any heat. Any help will be appreciated, Kenny [...]
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2001 Cadillac Catera 3.0L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: W06VR54R11
once communication was restore with the trans. module after replacing the ebtcm once the car is started and running, all be it poorly the transmission mil light comes on and the computer stores a p1700. Trouble codes: P0101 (maf circuit low), P0300 (random misfire), P0301 (misfire cyl 1), P0302 (misfire cyl 2), P0303 (misfire cyl3), P0304 (misfire cyl 4)
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1986 Chevrolet Corvette 5.7L clutch master/slave cylinder VIN: 1G1YY0785G
been having a problem with this c4 corvette. if you push the clutch pedal slowly, the pedal goes to the floor without restance, and the clutch master cylinder fills up. push the pedal normally, and it works properly. replaced clutch master cylinder twice with ...
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1994 Chevrolet C2500 Cheyenne 5.7L rear brakes VIN: 1GCGC24K7R
Truck is in for rear brakes locking up. On initial application rear brakes lock up hard. Truck does have RWAL brakes but they lock at lower than 10 mph. Have inspected shoes and drums, both appear ok. Drums not oversize and owner has only had truck for 3 years...
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2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GNDT13W4Y
car came to us with miss at idle we throughed everything we could think of in it. we got acdelco cap and rotor, ac plugs, ran compression check 150 lbs each cyl. runs great off idle, with scanner hooked up watching data all looks good. after changing spider th... Trouble codes: P0300
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2001 Chevrolet Silverado 1500 5.3L airbag VIN: 2GCEK19T51
We also run a body shop. This truck was wrecked, blew both a/bags. We put in new bags,new sensors, new sdm. Code b1001 says new SDM must relearn vehicle info. Cannot use latest Snap on scanner as software not yet available even though i have the 8.4 version. G...
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2002 Chevrolet pop 1.6L Hesitation, Stall VIN: 3G1SF21342
Hi, This car came to my shop and it has a problem of fuel delivery I think so, The engine stalls when is cold and when I depress the acelerator pedal under load it has hesitation, and sometimes it cuts out, I replaced the fuel pump and checked the map sensor a...
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2003 Chevrolet Silverado 2500 6.0L engine VIN: 1GCHK29U13
customer drove vehicle to lunch, restarted no oil pressure. towed to us. we have confirmed no oil pressure with mechanical gauge, changed oil & filter, no pressure, blew back thru both oil filter passages-ok. removed pan, checked oil pick up o-ring-ok. check o...
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2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNDT13S23
this car came from two other shops and i cannot duplicat problem for the code p1280 that they found and the loss of power light. it has happend twice in two weeks to the owner while driving at about thirty mph and agian at stop sign. i have searched iatn and c... Trouble codes: P1280 (accelerator pedel position circuit-sensor 2)
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2003 Chevrolet Impala 3.4L multi VIN: 2G1WF52EX3
customer has had car at 3 places & i have a magic wand to fix this gem. here are the complaints. cooling fans stay on,a/c stops working,air bag light on,raidio locks up,battery drain.all are intermitant please help...
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2003 Chevrolet Tahoe LT 5.3L ac VIN: 1GNEC13Z83
Hey Guys, We replaced the headliner in this truck yesterday, customer was here this morning saying AC is inop. and worked it before. Manual front and rear air on this beast. Front air blows out defrost vents only no matter what mode the switch is in, AC compre...
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2005 Chevrolet Avalanche 1500 5.3L No Start, Poor Idle Quality, Stall VIN: 3GNEK12T35
This truck is requiring a dechoke (WOT) to start cold (37-40 deg F) This is also not the only one we have this week 3 others an 05, and a 06 with same code or p0106b MAP code. The local dealer is claiming it is a fuel isue (no other brands have shown up with f... Trouble codes: P101, P300
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2003 GMC Yukon SLE 4.8L MIL Lamp on VIN: 1GKEK13V33
veh. was towed in message on dash was reduce engine power ran codes and no signal from pedal replaced and still no change. engine idles but no throtlle reponse. Trouble codes: P1125
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1989 Oldsmobile Cutlass Ciera 3.3L Cuts out, Misfire, MIL Lamp on VIN: 2G3AJ51N3K
Engine will start and runs fine then will just quit and not refire properly . When attempting to restart it will misfire , like it's mixing up cylinders , at the time it does this the scanner can read a rpm signal way high over 10,000rpm . Both the 3x & 1x sig... Trouble codes: 42 (Electronic Spark Timing)
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1995 Oldsmobile 88 Royale LS 3.8L cruise control VIN: 1G3HY52KXS
having a problem with this cruise system, vehicle came in with codes p1561 vent solenoid,p1562 vac solenoid, p1565 position sensor,after testing all system sensors as well as load testing all wiring could not find anything out of spec, after clearing codes cru...
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2000 Oldsmobile Bravada 4.3L transfer case VIN: 1GHDT13W5Y
I have a Bravada that is intermittently engaging the 4 wheel drive at slow speeds when going staight or turning. I have checked the archives to no avail. The transfer case has already been replaced and it has the proper fluid in it. It has been passed off to m...
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2000 Saturn LS1 2.2L steering pump VIN: 1G8JT52F3Y
After replacing lines we had no power steering. We removed pressure line and no fluid when engine running even when we raised rpm. Removed return hose and when we raised rpm pump began to pump. Reassembled everything and refilled and road tested. All was fine ...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Cadillac Seville SLS 4.6L hard shifting VIN: 1G6KS52YXS
first of all thanks everybody for the inputs. we explained to the customer this code 0086 caused by different output gear ratio ; customer decided to drive as it is. Now things are square: we all have the facts & the customer the choice.
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1985 Chevrolet S10 2.8L Stall VIN: 1GCCS14B1F
ALL REPLIES INDICATED MOST LIKELY A PROBLEM WITH THE CARBURETOR FLOAT, BROKEN BAFFLES IN THE TANK, OR EVEN A FAULTY DISTRIBUTOR. ULTIMATELY WE DID HAVE AN ISSUE WITH THE CARBURETOR GETTING TOO MUCH FUEL PRESSURE. WE FOUND THIS ENGINE HAD BEEN CHANGED AND MUS...
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1988 Chevrolet S10 Blazer 2.8L rear brake VIN: 1GKCT18R8J
Thanks for all the replies I was surprised by all the help, I appreciate it. No we did not solve the problem. We took it to inspection on our own and it failed again no rear brakes working at all. Spoke to the manager and he let me go through another lane stil...
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1990 Chevrolet K1500 Cheyenne 5.7L idler arm VIN: 1GCDK14K1L
Thanks for all the help, allot of you hit it on the head, we found that the customer had lifted the front to match the rear height (2 1/2"). the front tie rods were at approx 30 degrees angle when truck was on the ground, causing front steering suspension to b...
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1992 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCDC14K3N
OK FOLKS, HERES THE DEAL. THANKS TO DALE,CHET,BOB,JOHN,&TOMMY.WE TRIED A KNOWN GOOD DIST.WITH NO RESULTS.BUT PAUL FROM N.DAK.&JASON WERE ON THE RIGHT PATH.WHEN WE CHECKED FUEL PRESSURE THE GUAGE WOULD READ 13 TO 15 PSI.GOOD HUH?BUT THE ENGINE WOULD NOT IDLE & ...
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1997 Chevrolet Venture 3.4L Poor Idle Quality, Cuts out VIN: 1GNDX06E3V
Hello To all and to the people of this wonderful place. First I want to start and thank all the guys that send me information and took the time to read and participate. AS to the fix of my problem was time comsumer ... I kept on it till it cut looking at each... Trouble codes: P0101.
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2004 Chevrolet Suburban 1500 LS 5.3L no rear heat VIN: 3GNFK16Z34
Thanks everyone, Andrew was right with the actuator, but Todd [...] explained it best. We did more testing and found the positioning sensor in the actuator was turning on the A/C. We replaced the actuator and WA LA! Thanks very much for the help. This iATN web...
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2004 Chevrolet Cavalier 2.2L Pads and rotors VIN: 1G1JC52F44
Thanks for all of the help. I replaced the master cylinder and have not heard from the customer in a couple of weeks.
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2005 Chevrolet Trailblazer EXT LS 4.2L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1GNDS13S05
replace the cam shaft accumulator The accumulator was out of acceptable range therefore we replaced and fixed drivability problem. Trouble codes: P0014, P0017.
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2001 GMC Yukon XL 1500 SLT 5.3L Fuel Guage VIN: 3GKFK16T81
Thanks for all of the replies. It ended up being a deformed fuel tank (plastic). The tank was deformed badly enough on the top where the fuel module sits that it wouldn't allow the fuel pump module to fully compress into the tank. We replaced the fuel tank and...
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2001 Pontiac Grand Am SE 3.4L MIL Lamp on VIN: 1GNF52E14M
Thanks for all the replies on this one. It did turn out to be a rather small leak where the plastic meets the metal. Took a bit of pressure with grease all around the seam, and hit it with Ait, and a bubble popped up. Of course this one had all the usual pr... Trouble codes: P0442 (EVAP Leak small).
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2002 Pontiac Bonneville SSEi 3.8L abs VIN: 1G2HZ54112
Thanks to all who took the time to respond. The problem ending up being the yaw sensor-the bracket it was mounted to was bent up slightly-I made sure the bracket was horizontal to the trunk floor and drove several times, no problem detected. I did not need t...
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2003 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NG52E33
Long story short a few things were going on here. Though we tried running the car on clean fuel in the rail before by using our injector cleaner tool we could not get the car to run. However after trying this again and using propane to make car run for a while... Trouble codes: P0131.
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