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Prev Professional Automotive Repair Technical Discussions for August 28, 2007
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Limited 3.8L heated seat VIN: 1G4HR54KXY
drivers heated seat inop. when you push the button light does not come on. looked at diagram and it has its own module under the seat. as does the passenger seat. modules are the same so we swithed them and yhe passenger seat works. when you activate drivers s...
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2000 Buick Century Custom 3.1L No Start VIN: 2G4WS52J3Y
Good morning all, I have this Buick that is making me go in circles. Came in for a no start, customer stated that they had to jump it twice. Thinking charging system problem I had them park it in front of the shop. When I got to it found the battery was only a... Trouble codes: U1000, P1630, B1001, B3102
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1999 Cadillac DeVille 4.6L Unknown VIN: 1G1UEYH64X
Ok Caddy guys- this is a quick one. We are about to do head gaskets on this northstar... Alldata says remove engine from vehicle. Is this the best method? or is there an easier way? Any thoughts would be appreciated. Thanks
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1995 Chevrolet Tahoe 6.5L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 3GNEK18S8S
This trucks drives fine , but under acceleration it trips code 36 and turn s mil on. on decel or cruise it goes out, but logs history code. In the moring when you start it. The truck will barely idle creating a very rough idle and alot of white smoke. a quick ... Trouble codes: 36 (injector pulse width error/ long resonse)
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1995 Chevrolet S10 4.3L No Start VIN: 1GFCCS19ZS
Need some Help w/this one.I have a 95 s10 that has spark but no injector pulse,and I also have no S.E.S.light on dash.I found that at the pcm on the battery voltage wire I lose voltage w/ignition on I have checked all grounds can find no faults w.them.also I h...
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1995 Chevrolet C1500 5.7L clutch
I have been fighting this one for over 2 weeks now. Truck came in with problem of clutch not releasing. checked hyd system no leaks bled system still would not release. pulled trans clutch had been slipped pressure plate fingers uneven. we installed new clutch...
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1996 Chevrolet Cavalier 2.2L battery VIN: 1G1JC5242T
Using normal procedues, isolated draw to cluster and stop/hazard circuit. Removed cluster and that draw disappears, still have draw on stop/hazard fuse even though brake switch and multi switch are disconnected? Should note that this car has a salvage engine a...
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1997 Chevrolet S10 LS 4.3L MIL Lamp on VIN: 1GCCS19X0V
customer just purchased this pick up and took in for state emission test.failed with multiple codes. first thing we found was a check engine light bulb that looked like a flash cube - replaced bulb cleared codes and test drove.after 2nd test drive we tripped a... Trouble codes: P0300 (multiple missfire)
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1998 Chevrolet S10 2.2L engine VIN: IGCCS1447W
I replaced the engine with a reman unit from pep boys.The problem i am having is the motor runs good but has everthingno power.This truck has had new fuelpump installed about 5 months ago but tests ok . Everthing on this motor is new. Had to replace egr valve ...
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1999 Chevrolet Silverado 2500 6.0L No Power !!!! VIN: 1GCGK29UXX
Truck came into shop with no start complaint. I turned the key on, dash cluster was dead. Key crank position gave no response. Turned on headlamps, no lamps on. 4 to 8 seconds later the headlamps came on and the dash cluster came alive! Truck cranked fine but ...
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2000 Chevrolet S10 4.3L ignition lock VIN: 1GCCS14W4Y
I have this S-10 with bad ignition tumbler, the key will not turn. I have the instructions on how to remove a non-functioning lock cyl. by taking off the entire "lock module" and grinding off the retainer tab, first step is to remove the steering wheel. BUT ho...
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2001 Chevrolet Impala 3.8L a/c compressor VIN: 2G1WF55K51
recently this impala came in with clutch smoking and compressor locking up,tech replaced comprssor,accumualater,orfice.came back with same problem,compressor locked up clutch smoked,this time,replaced compressor,a/c manifold hoses,accumualater,comdenser,liquid...
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2001 Chevrolet S10 2.2L obd readiness VIN: 1GCCS14511
Having an issue getting vehicle to set obd readiness flags for AIR and EVAP. Have performed Sys. set procedure( from GM serv info.) multiple times and to no avail. Temp parameters are correct when starting set procedure, and ethanol content indicated on scanne...
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2001 Chevrolet Monte Carlo SS 3.8L a/c clutch VIN: 2G1WX15K81
hello everyone! having a problem with the a/c in this ss monte carlo. pressure sensor on high line is working properly. 120 psi in refrigerant system. all fuses and relays are good. upon excessive diagnosis, i have found all information to the computer indicat...
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2002 Chevrolet Silverado 1500 4.3L Hesitation, Surge, MIL Lamp on VIN: 1GCEC14W42
truck would send 2 codes 1 for the thermostat saying it was not cooling enugh and one for bank 1 sensor 2 truck runs good while drivin but when your stopped it seems to shut off or surge real bad
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2002 Chevrolet Tahoe LS 5.3L No Start VIN: 1GNEK13Z52
Vehicle cam in on a hook for a no-start diagnosis. The customer said the tow-truck driver was able to start it once he had it on the flat-bed. It has sat on our lot for about 3 days now. When I went to start it this morning, it would crank fine, but not start....
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2003 Chevrolet Venture LS 3.4L No Start, Stall VIN: 1GNDX03E13
No crank..welcome back. I just came back from vacation to this POS.This van was just bought by a very good customer. She owned it one week and called with a stall with a no crank. I was still in the joyful bliss of vacation at this point. The other tech spent ...
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2003 Chevrolet Trailblazer LS 4.2L Control VIN: 1GNGS13S33
Greetings, This vehicle came to us after the customer replaced the battery. After replacement he noticed the A/C would not blow out of the vents (blows good out of floor and defrost). I am getting mixed readings on the scan tool. Sometimes it shows to be contr...
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2004 Chevrolet Trailblazer EXT LS 5.3L high beams VIN: 1GNES16P54
when i turn on high beams all lights go out and do not come back on for some time
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1996 GMC Sonoma SLE 2.2L Misfire VIN: 1GTCS194XT
Vehicle has a misfire on #1 cylinder all the time. Checked spark, good, checked fuel pressure, good. Engine vacuum is low, 17.5"hg at idle, 19.5"hg at 2000 rpm. Swapped wires, coils & plugs, miss still on #1. Swapped fuel injector, miss still on #1. Did a c... Trouble codes: P0301, P0300 (random misfire)
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2002 GMC Envoy SLE 4.2L MIL Lamp on, Power Loss VIN: 1GKDT13S22
Vehicle came in with SES and Reduced Engine Power lights on. Scanned and found code P1221. Followed the GM flowchart and diagnosed bad throttle body. Replaced with new GM part. Initially, it seemed as if vehicle was fixed (lights stayed out and vehicle drove g... Trouble codes: P1221
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1992 Pontiac Grand Prix LE 3.1L speedometer VIN: 1G2WH54T5N
thank you for taking the time to read this post. i have a 92 gp what happens is you drive to 20-30mph and speedo works fine untill you let off the gas then it drops to 0. rev car & speedo works but not accurate, shift to n and speedo stops all together. please...
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1999 Pontiac Grand Prix SE 3.8L climate control
we have been in a family owned repair business for over 35 yrs and were stumped. recently weve had a 99 grand prix with a 3.8 non supercharged motor in our shop. when we got the car in the shop it quit while we was working on the A/c and the radio was locked u...
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Fixes & Summaries for GM
Fix/Summary Answers
1987 Chevrolet Astro 4.3L engine VIN: 1GNDM15Z2H
I want to thank all that replied. I received excellent information. We will start the V8 transformation in October. I was referred to jagsthatrun.com by a few members. They have the necessary engine mount brackets for $49.95. They also list polyurthane mounts ...
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1999 Chevrolet Tahoe LS 5.7L engine VIN: 1GNEK13R5X
ok,this one was fixed and sold at auction!! Thank You Lord!! I did not want to put a set of rings in this thing. Put OEM valve seals and that fixed it. They did not look anything like the felpro ones. My question was,would servicing heads make the engine smoke...
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2002 Chevrolet Tahoe LS 5.3L MIL Lamp on, INT NO START VIN: 1GNEC13ZX2
I need to thank every one that replied. I guess I had 2 problems going on with this vehicle. I did replace the fuel pump and that took care of the low fuel pressure issue and the intermitten no start. As far as the check engine light and po 179 is concerned, t... Trouble codes: P0179.
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2002 Chevrolet Impala 3.8L No Start, Stall VIN: 2G1WH555KX
THANKS FOR EVERYONES HELP. AFTER READING YOUR REPLIES I AGAIN WENT BACK TO THE BEGINING AND FOUND A BROKEN TERMINAL IN THE CRANSHAFT SENSOR PLUG. THE PLUG MUST HAVE BEEN PROBED AT AN EARLIER TIME POSSIBLY DUE TO THE FACT I FOUND AN AFTER MARKET MODULE ON A VEH...
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2004 Chevrolet Trailblazer EXT LT 4.2L Hesitation VIN: 1GNET16S54
Received a few replies on this one.This vehicle did not have an air pump nor a secondary air valve.Most had told us the location of the components, air pump under the left front frame and the valve bolted to the exhaust manifold on the right side. This truck w...
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2004 Chevrolet Monte Carlo LS 3.4L Starting VIN: 2G1WW12E04
THANKS FOR ALL OF THE REPLIES. I SENT CAR TO DEALER TO BE REPROGRAMED. CAR STARTS FINE & COSTOMER IS HAPPY
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2005 Chevrolet Trailblazer LS 4.2L Blower Motor VIN: 1GNDT13SX5
I would like to give my heartfilled thanks to everyone that responded. This one had a consistent response to replacing the ignition switch. So we brought the customer back in and replaced the switch (even though it was not acting up while it was here). It has ...
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2002 GMC Envoy SLE 4.2L airbag VIN: IGKDT13S12
Customer has not returned this vehicle to us for repair. We are still repairing one of his other vehicle's. Will keep network posted.
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1986 Oldsmobile Cutlass Ciera LS 2.8L Cuts out, Stall VIN: 1G3AM37X4G
thanks for all the helpful replies. it turned out to be a combo of ignition coil and ECM. did a tap test on the ECM and it acted up a bit but didn't stall all the way. the ignition coil was intermittently shorting out when the underhood temperature would get v...
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1990 Oldsmobile Cutlass Ciera SL 3.3L No Start VIN: 1G3AM54N8L
Well we replaced all the injectors and that fixed the problem. I guess it was sending errors to the computer having so many down. Thanks for all your help
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1992 Oldsmobile Cutlass Cruiser S 3.3L No Start, Cuts out, Stall, Misfire VIN: 1G3AL54N5N
group, customer didnt want to spend any more money on this old of vehicle, & decided to scrap it. i beleive coils would have fixed it , thanks for all your help & suggestions.
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1986 Pontiac 6000 LE 2.8L hard start VIN: 2G2AG19W9G
WELL SORRY GUYS, THIS ONE LEFT WITHOUT REALLY FINDING ANY CULPRIT. THE ONLY THING THAT I DID NOT TRY WAS A CARBON CLEANING SERVICE, WAS GOING TO BUT THE CUSTOMER JUST WANTED TO PICK IT UP. LIKE I SAID BEFORE, EVERYTHING THAT I COULD TESTED WAS WORKING PERFEC... Trouble codes: 12 (no rpm pulse), 34 (map/maf voltage low), 42 (est circuit open or grounded).
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