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Prev Professional Automotive Repair Technical Discussions for May 19, 2009
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Open Help Requests for GM
Help Request Answers
1988 Buick Century Custom 2.5L No Start VIN: 1G4AH51R65
Thank you for you assistance. Although this vehicle is 21 years old, it is in remarkably good condition. When it runs, it runs great. However, it will not start sometimes. I have spark, injector pulse and fuel. The data on my scanner all reads normal, It reads...
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2000 Buick LeSabre Custom 3.8L Radio VIN: 1G4HR54KX5
I have been working on this 2000 Buick off and on for a week now and I'm at my wits end. The customer brought it to me saying that the radio wouldn't work first thing in the morning, but after driving a ways it would. They thought it had something to do with b...
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1996 Cadillac Seville STS 4.6L Poor Idle Quality VIN: 1G6KY5294T
I have a 96 seville with a 4.6L engine. It has a intermittent high idle problem with no codes. When it runs high it runs at about [...]. I have replaced the idle air control motor and cleaned the throttle body passages. I have also checked for a vacume leak...
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2002 Cadillac DeVille 4.6L lights and climate control head VIN: 1G6KD54Y82
Thanks for any help in advance guys. This problem is intermittent. climate cotrol head goes blank, vehicle has hot air only. During this period the headlights and dash lights will blink on and off. no codes stored, did tap test various modules. When the climat...
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2004 Cadillac Escalade ESV 6.0L MIL Lamp on, TIGHTEN FUEL CAP VIN: 3GYFK66N04
initally evap purge solinoid flowing at all times, replaced ok, upon running monitor readiness gross leak still detected, checked evap vent solinoid found light blue piston sideways and falling out/ definintly not able to close and seal correctly. replaced and... Trouble codes: P0455
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2005 Cadillac CTS 2.8L ride control VIN: 1G6DM56T15
this car came in to my shop with a extreme bounce or springy front end. we got struts and sheids from cadillac, installed them and its the same way. i don't see any other thing at the suspension or alignment wrong with it. the front end also is higher then bef...
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1956 Chevrolet truck 5.7L Accessories VIN: 3A56L00454
this is a 1956 truck with a 1993 buick roadmaster engine and tranny and cruise. I have all the powers to the cruise module I should. pin F from ignition switch (key on), pins D and G from brake switches (closed with brake off)pin A from switch, has power in (o...
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1998 Chevrolet K1500 Cheyenne 5.7L Misfire, MIL Lamp on VIN: 2GCEK19R4W
This truck is giving me a bit of trouble. It came in to the shop with a transmission problem. It sat for about 5 months (owner started it occassionally and let it run). Installed GM rebuilt transmission. Took it for a road test and after 10-15 miles SES light ... Trouble codes: P0300
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1999 Chevrolet Express 1500 4.3L No Start, Poor Idle Quality, Hesitation VIN: 1GCFG15W1X
vehicle only starts when you jump it or when you use starter fluid. when the vehicle is running it hesitates on load and you hear it back firing inside the intake. it also runs rough when is idle and fuel pressure is above 50 psi codes: p0151b; p1404a; histo...
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2001 Chevrolet Silverado 1500 4.8L 1-2 shift VIN: 1GCEK19V7Y
good morning. I have a trans that we went through that needed an over haul, the truck has 180,000 on the original trans. upon teardown we found all of the frictions and steels cooked. After the rebuild, I have been dealing with a very hard 1-2 shift, all of th...
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2002 Chevrolet Impala 3.8L Stall VIN: 2G1WF55K82
thanks in advance everyone. we have a park police car that is driving us crazy. we have already had it for a few weeks and still haven't nailed it. this thing is so intermitent. we have driven and idled it for days with no problem. then all of a sudden it will...
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2003 Chevrolet Tahoe LT 5.3L Steering VIN: 1GNEK13Z73
While driving the steering does something that's hard to explain and I have never experienced it before. The best way I can describe it is you seem to have to move the steering wheel a lot to keep it going straight. When hitting bumps it seems to make the whee...
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2004 Chevrolet Silverado 3500 LT 6.6L MIL Lamp on VIN: 1GCHK33204
customer complains of lack of power like the turbo is not working. pulled codes and found the p2564 turbo vane position sensor. did voltage checks from alldata and they check good. says to replace position sensor. just wondering if this is a problem with these... Trouble codes: P2564
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2007 Chevrolet Impala LS 3.9L tpms VIN: 2G1WS55R77
cant find codes no where looked alldatta iatn gm web site need help bad found codes on snap on scanner under tire no p or b in front of them
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2001 GMC Yukon XL 1500 SLT 5.3L Poor Idle Quality, Hesitation, Cuts out, Poor Fuel Economy, MIL Lamp on, HARD STARTING VIN: 1GKFK16T11
Vehicle is hard to start because of bleed down of fuel pressure. When started, idles rough. When taking off and accelerating vehicle cuts out (bucks - jerks). Occassionly on flat at high speeds will feel it cut out, not consistent though. It will buck and jerk... Trouble codes: P0453 (testing and results)
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2001 GMC Yukon SLE 5.3L abs module VIN: 1GKEC13T81
abs code co268 (pump motor shorted/circuit) vehicle came in for shorted module abs pump motor running constantley, sent module off for repair as usual. after installing repaired module abs light with co268 code came on instantley, called module repair company ...
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2002 GMC Savana 3500 6.5L engine VIN: 1GDHG31F32
i replaced the head gaskets due to comression leaking into the cooling system. once i finished the job and test drove, i noticed a thumping sound from the intake. the motor has compression ranging between 325-445 psi. it runs well and does not seem to have any...
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2003 GMC Yukon Denali XL 6.0L rr hvac fuse VIN: 1GKFK66U63
boy what a mess!!! this started in a backyard...then to another shop and now i've got it. ign 3 fuse 10a in left i/p blown, rr hvac fuse 30a in u/hood fuse blk is blown. both were replaced w/ 30a fuses, a new blower motor and a new hvac module last fall. now i...
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2001 Pontiac Aztek 3.4L battery light VIN: 3G7DA03E91
well this aztec came in about 4 mounths ago with a battery light on replaced battery all good, now this morning it came back with the batt light on, have checked all circuts i have 4.38 volts on the red wire at the pcm if i unplug it from the alt it goes to 5 ...
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac Seville STS 4.6L head gasket VIN: 1G6KY5298V
Hello there, I finished this Caddy. Thanks for all the help with your posts. Somethings I learned on this was when dropping the assembly you need to remove the oil cooler hoses completly to be able to get the a/c manifold hose out so it can stay with the car. ...
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1990 Chevrolet Lumina 2.5L Stall, Poor Fuel Economy, MIL Lamp on VIN: 2G1WL54R5L
Thank's to all that responded to my POS problem.I had already checked sensor ground's and computer ground's.I had not noticed that the TPS reading showed 0.00 volts. I took all the plastic sleveing off and cut all the tape off and looked for wiring insulation ... Trouble codes: 15 (coolant sensor signal voltage high).
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1997 Chevrolet Corvette 5.7L Stall VIN: G2V5103974
thanks to willam . the steering lock on the culster was on the car had the tsb install . all i did was repalce the relay thANK AL [...] OF YOU GUYS
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1997 Chevrolet Lumina 3.1L Hesitation, Surge VIN: 2G1WL52M7V
On the recomendation of some of the iatn members I watched timing retard and found it was retarding the timing 20 degrees. The engine has an audible knocking noise so I relocated the knock sensor to keep it from hearing the knock. Thank you for all your help.
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2001 Chevrolet S10 4.3L compressor VIN: 1GCCS14WX1
follow ac wire back from fuse back and found the wire shorted near the brake boaster..thanks for all the help guys
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1995 GMC Jimmy SL 4.3L dome light VIN: 1GKDT13W0S
this blazer has all the switches you can think of. the problem was the DOOR HANDLE switch inside the door comes with the latch. customer did not want to buy this expensive latch, so we just cut and taped back the ground wire inside door. all works fine now. th...
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1995 Oldsmobile Silhouette 3.8L forward gear select VIN: 1GHDU06L4S
THANK YOU GUYS FOR YOUR HELPFUL ADVICE, I FOUND THAT THE WIRING HARNESS THAT GOES INTO THE TRANMISSION HAD TWO BARE WIRES THAT WERE TOUCHING EACH OTHER, (WIRING HARNESS JUST IN FRONT OF THE A/C COOLING FAN). I ERASED THE CODE THEN TOUCH THE WIRES TOGETHOR MYSE...
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2000 Saturn SC2 1.9L MIL Lamp on VIN: 1G8ZY1279Y
Replaced ECU again this time from dealer, so far so good. If the light comes on again I'll be back. Thanks for all who tried to help. Trouble codes: P0410 (A.I.R. Failure).
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2001 Saturn SL2 1.9L starting VIN: 1G8ZJ52771
GROUP, WE ORDERED A NEW BCM & IGNITION LOCK CYLINDER, INSTALLED & PERFORMED RELEARN PROCEEDURE, & CAR STARTES & RUNS, ALL WARNING LIGHTS ARE ON & CODE B1001 WILL HAVE TO TAKE TO DEALER TO GET NEW BCM PROGRAMMED TO BE COMPLETE. ALL REPLYS HELPED GREATLY. THANKS...
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2004 Saturn Vue Red Line 3.5L tcc VIN: 5GZCZ63474
Special thanks to Ernest [...], he hit the nail on the head. The fix was a torque converter, and reflash the PCM callibrations.
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