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Prev Professional Automotive Repair Technical Discussions for July 2, 2007
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Open Help Requests for GM
Help Request Answers
2004 Buick Rendezvous CX 3.4L rear diff. pump ck. valve VIN: 3G5DB03E34
Hello everyone. I have this rendevous that has no codes in any module but the DIC display reads AWD DISABLE. I can get into ABS, powertrain and ATC and the only hint I get is "AWD fluid temp diable-yes", on one of my data readings. I read up on info and it sou...
1992 Cadillac Eldorado 4.9L struts VIN: 1G6EL13BON
The service ride control message is illuminated and code 23 is stored in the CCR memory (LF Actuator Error). I performed the diagnostic flow chart for this code and traced the problem to an internal issue with the strut itself. In looking for parts and talking...
2003 Cadillac Escalade 6.0L compreesor VIN: 3GYEK63N23
compressor replaced for locking up, orifice tube full of metal, system was flushed, drier and orifice replaced. at idle vent temp was running at about 60, running down highway will get to 48. fan clutch is suspected any comments
1991 Chevrolet Camaro RS 3.1L Excessive Emissions, Poor Idle Quality VIN: 1G1FP23T2M
hello fellow members, I have a strange one here on an old model. These cars are usualy gravy for me but this one has me pulling my hair out. The camaro recently failed an emissions test do to high Co 5% at cruise (two speed idle test). I got it in the shop t...
1994 Chevrolet C1500 Cheyenne 4.3L compressor VIN: 1GCDC14ZXR
help me please!!! i have been working on this truck for about a week i have replaced almost everything expect evaporator (been flushed)and head control the compressor cycles fast about every 5-10 seconds not long enough to get readings put 2 lbs of feron as ca...
1995 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDT13WXS
Please help! this is one of those nightmare vehicles we all get. The blazer came with what appeared as a simple missfire. After a scan of codes cyl one missfire detected,seeing original sparkplug wires we reccomended a tune up. After tune up we still have a ro... Trouble codes: P0300
1998 Chevrolet K2500 Cheyenne 5.7L condenser VIN: 1GCGK29R1W
I broke off the orifice tube trying to get it out of the condenser. I need to know if there is a repair kit available for the condenser or if I have to replace the condenser. I don't see any available through car quest or napa that I can see. Any help would be...
1999 Chevrolet K1500 Suburban 5.7L engine VIN: 1GNFK16R1X
vehicle will cut off while driving at any speed fuel pressure is good at 55to 60 psi at all times all dash lights stay on will put in neutral and start back up may not happen for two or three days
1999 Chevrolet K1500 Suburban 5.7L No Start, Stall VIN: 1GKFK16ROX
this suburban intermitatly blows the ecm 1 fuse under the hood.have pulled a wiring diagram and checked wiring to all componants on this circuit ie injectors.crankshaft pss.sensor,coil,coil dryer,ecm.might only blow this once a month.thanks for your help
2000 Chevrolet Impala 3.4L havc VIN: 2G1WF55E9Y
sometimes blower motor is inop. a.c. button inop. wont switch from recirc to fresh air. problem only occurs for under 1 minute.
2001 Chevrolet Cavalier Z24 2.4L lighting and starting VIN: 1G1JF12T61
2001 cavalier manual trans 2.4..came in 3 days ago got tires plus oil change and align check...unrelated but want to include everything..now customer was driving and got stuck in traffic and while sitting in nuetral everything lost power (except engine stayed ...
2003 Chevrolet Astro 4.3L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GNDM19X63
this is a long post and a weird problem.. loss of power at 60 mph. cant go over 67mph. vehicle has sporatic misfires under moderate load (after wot) and mostly on cyl #2! also has occasional mis under heavy load at max speed around 60mph! the vehicle actually ... Trouble codes: P0101 (maf circuit), P0300 (random misfire)
2006 Chevrolet Cobalt LT 2.2L Pass Key III + (no start) VIN: 1G1AL15F76
I purchased this vehicle as a bank repo with a dead battery and without keys or electronic key fob. It has the PASS KEY III + security system. I have fully recharged the battery (the radio still has it's memory and works fine) I have had a new Master Key cut f...
2000 Geo prizm 1.8L MIL Lamp on VIN: 1Y1SK5Q841
i am a frist time user of this site .the problem i have is a intermite po171 some times the car will complete a drive cycle with no code. i have checked fuel psi and volume it is ok.the mass air was very dirty it was cleaned.the front o2 sensor was replaced.al... Trouble codes: P0171
2002 GMC Yukon XL 1500 SLE 5.3L Excessive Emissions, Cuts out, Misfire, MIL Lamp on VIN: 3GKFK16Z72
1990 Oldsmobile Cutlass Calais SL 3.3L Excessive Emissions, Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp on VIN: 1G3NT14N9L
thank you for reading this post. car came in with ses light on & runs bad.cooling fan on. hook up scanner & no data. ground aldl & no code 12 light on steady. go down trouble tree & replace e.c.m. & mem call. still no data,code 12 & fan still on. please help.....
1996 Oldsmobile 98 Regency Elite 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3CX52K2T
Hello to all, can you help me. I have a car that came in for a belt noise. After checking I found the noise coming fron the rear valve cover. They needed the car so they picked it up and 4 hours later called with a check engine light. Now my nightmare begins. ...
1997 Pontiac Grand Am GT 3.1L Charging VIN: 1G2NW12M2V
Hello I am try to determine if it is normal on this vehicle to have a low charge output at idle with the AC on or if I have a fault. With the vehicle running with the ac off the charging voltage on the scan tool is about 13.1 V this matches actual at the b...
2001 Pontiac Aztek 3.4L bcm VIN: 3G7DA03E91
Hi guys, We've got this Aztec with a wierd problem. Came in A/C inop. Pinpoint testing led to BCM. Wires at BCM are A/C request from switch and Class 2 serial data out to PCM. Scanner showed no A/C request. Started checking wiring to PCM and system started wor...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick LeSabre Custom 3.8L Vehicle Theft Deterent VIN: 1G4HP52K34
Thank you to those who took time to try to help on a VTD problem!!! Someone mentioned making sure the battery cables are tight and also the possibility being a BCM. This system is not a PassKey 2 system it is a Passkey 3 system so their is no pellet in the key...
1989 Chevrolet S10 4.3L pressures to high VIN: 1GCCS19ZOK
flushed system ot with ac flush and comressd air fixed thankyou
1992 Chevrolet Lumina 3.1L compressor VIN: 2G1WL54T8N
well thanks to all the replies and everyones help. frederick from virginia hit it right on the head. i tried 2 more ecm's but didnt think about it having the wrong mem-cal. i put the right one in and bingo everything is fine. thanks to all and thanks frederic...
1996 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W3T
Sorry for the delay in closing the request, I was on vaction for 10 days. Thanks for all the replies, they were very helpfull. As I thought, the vehicle had multiple problems. First, the fuel filter was plugged up, replacing the fuel filter took care... Trouble codes: P0300 (random cylinder misfire), P1133 (HO2S B1S1 insufficient switching), P0134 (low O2S activity B1S1), P0153 (O2 signal slow B1S1), P0171 (Fuel system too lean bank 1).
1999 Chevrolet K1500 Suburban 5.7L No Start, Stall VIN: 1GNFK16R7X
Vehicle is fixed, finally got the suburban back and found the ignition cylinder was bad. I borrowed a friends tech and I could see the fault. replaced lock cylinder assembly and car has been fine for 2 weeks. thanks for all the help!
2000 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEK19T7Y
Gentlemen, thank you for all the input. I drove the vehical today and it runs and drives very well. The only parts replaced were both upstream O2 sensors. Another shop owner in my town related a simular experience. In the past it is unusual to see a GM vehica... Trouble codes: P0200, P0300, P0463.
2001 Chevrolet Silverado 1500 4.8L Gear ratio VIN: 2GCEC19V01
Contacted GM, ACDelco tech, both said they had no VCI number for the 4.11 rear ratio as 4.11/4.10 was not an option. The RPO translation booklet does show that as an option #GT5 (?). Customer asked that I purchase a programmer for him. We bought a hypertech an...
2001 Chevrolet Express 1500 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GCEG15W81
Thanks to everyone for your suggestions. In the future I wish that people would take the time to completely read the post before repling so as not to waist your time or mine. This van has a newer engine, so I knew that carbon was not a factor. This van did NOT... Trouble codes: P0300 (multiple cylinder misfire), P0302 (cylinder 2 misfire), P0335 (crankshaft position sensor circuit).
1998 Saturn SC1 1.9L MIL Lamp on VIN: 1G8ZE1287W
Thanks guys, all pretty much said the same thing. plugs & wires fixed this car. I had never ran into this code before. The computer uses the load on the #1 & #4 cyl coil for a cmp ref. TED Trouble codes: P0341.
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