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Prev Professional Automotive Repair Technical Discussions for April 10, 2007
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Open Help Requests for GM
Help Request Answers
2005 Buick LaCrosse CXS 3.6L pass key VIN: 2G4WE53715
trying to relearn a new pass key iii on this vehice. was involved in a drive by shooting, original key and fob were lost by the cops. got new key cut from dealer and am trying to follow the 30 minute relearn procedure. problem is the "starting disabled" messag...
1982 Chevrolet LUV 2.2L Starter VIN: J8ZBL14S3C
There is no solenoid voltage when ignition switch is turned to start. I NEED A WIRING DIAGRAM, PLEASE! Nothing usuable in AllData or Standard Products info system. Thanks guys.
1997 Chevrolet Astro 4.3L Intake manifold VIN: 1GNDM19WOV
Hey guys, I know someone will have the answer and thanks in advance for any help. This customer came in with a leak and it was the typical coolant leak behind the compressor, the van ran fine. I installed the felpro gasket kit along with valve cover seals and ...
1999 Chevrolet Lumina 3.1L ABS Light VIN: 2G1WL52MXX
We have a '99 Lumina that turns on the ABS light after driving 1 to 10 miles. Genisys pulled code c1226 R/F wheel speed sensor excess speed variation & Snap-On scanner pulled c1226 Relay coil open. Found prwvious posts on interference in ABS harness from impro...
1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W8X
Very strange no start problem. No pwr to fuel pump relay KOEO. Fuel pump works with prime connector. Replaced ign. switch (common problem). Verified correct install of switch, turned both switch and key to ACC. No comm. w/ VCM in run position, other modules co... Trouble codes: U1255 (Class 2 comm. fault history), U1301 (Class 2 shorted to batt history), B2961 (Key in ignition circuit fault history)
2000 Chevrolet Silverado 1500 5.3L brake pedal VIN: 1GCEK19T21
this one has me pulling my hair out. This should be simple but isn't. The truck had the brakes done at my friend's shop front and rear but the truck wouldn't stop like it should so they bled the hell out of it and nothing helped so I got it. I bled it, cycled ...
2002 Chevrolet Blazer LS 4.3L Differential VIN: 1GNDT13W32
Hello, I have an 02 Blazer with a growl/whistle which sounds like its coming from the rear end. It starts about 5 mph and will continue up into highway speeds. Noise has no change when brakes are applied and will continue until a complete stop. When driven on...
2002 Chevrolet Astro LS 4.3L Misfire, MIL Lamp on VIN: 1GNDM19X82
I just installed a 4.3 vortec engine in the Astro and started it up and it ran good for a few hours. After awhile the SES light came on and it started indling really rough. Well I pulled in the computer and it stated multiple cylinder misfire. I noticed that t... Trouble codes: P0301 (Multiple Cylinder Misfire)
2003 GMC Yukon XL 1500 SLT 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 3GKFK16Z03
This vehicle came into our shop with a check engine light on, when we checked codes, there were none, howevewr the vehicle was idling poorly, and the battery wwas bad. we replaced the battery and test drove and the code p0300 came up. The vehicle had never bee... Trouble codes: P0300 (random misfire)
1988 Oldsmobile Cutlass Calais 2.3L Cuts out VIN: 1G5DGH76J8
runs five minutes and stalls changed o2 and runs alot better,did this i owned one before and my car ran great,this one stalls after running little while.after a road test still will stall .when it does stumble then stall engine light flashes,checked codes,23 a... Trouble codes: 23 (air temp sensor open), 26 (qdm error), 43 (est failure), 53 (over voltage)
2002 Oldsmobile Alero GL 2.2L timing chain VIN: 1G3NL52F82
hello every one.. i have an alero that has a knocking noise from the front of the timing chain area..i think i can see a cracked link. is this possible? has anyone seen this before? it looks to be a pain in the butt repair but a doable repair. any hints? thank...
1991 Pontiac Grand Prix SE 3.4L security system VIN: 1G2WP52K42
Group, Customer came in to get ignition lock cylinder replaced because of sticking & couldnt remove key found cylinder worn out replaced with coded oem cylinder & security light blinking & car would start & die after 3 sec, checked for 5volt to pass key module...
1998 Pontiac Bonneville SE 3.8L Suspension VIN: 1G2HX52K8W
This car when you drive down the road and hit a dip! The body will sway back and fourth. It feels like the sway bar is unhooked. I have checked the Alignment, replaced the struts,checked all the bushings. The rack has been replaced. I also replaced the cradle ...
2002 Pontiac Bonneville SE 3.8L oil pressure VIN: IG2HZ54112
any one know of a releated problem with this motor.i really dont know how long this vehicle had low oil pressure due to faulty pressure sender,or could i have done somehting wrong with the lifters?.I will pull pan down,again and check bearings.there is no miss...
2002 Saturn Vue 2.2L ac operation VIN: 5GZCZ23D92
Hey all, I need some help here. A customer brought in a 2002 Saturn Vue stating that his AC does not work intermittently. Upon verifing complant, we found that the ac would come on and blow cold when the fan selector was on "1" but the ac light would go out an...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Rendezvous CX 3.4L headlamps VIN: 3G5DB03E82
mark from indiana hit this one on the head,recieved 8 replies on this one,last one was right, turned out to be bcm.i had replaced ignition switch because scan tool power monitor mode indicated unknown switch position at times.this did'nt fix problem,headlamps ...
1988 Chevrolet Celebrity 2.8L No Start VIN: 3G1AW51W9J
Sorry for the delay as the customer did not authorize to fix until recently. The final fix is the ignition module. Since I can monitor the cranking rpm, I did not replace the crank sensor. Some of you mention to replace it though. All six injectors and all thr...
1996 Chevrolet Lumina 3.1L Hesitation, Cuts out, Poor Fuel Economy VIN: 2G1WL52M90
thanks for the help. I relocated the knock sensor and vehicle working much better thanks again.
2000 Chevrolet S10 2.2L compressor VIN: 1GCCS194DY
Thanks for the many replies. Apparently the orifice was removed from system by another shop. By installing the new orifice we were able to determine that the compressor was not working properly. We replaced compressor, drier and orifice. System is working fine...
2001 Chevrolet Malibu 3.1L Excessive Emissions, MIL Lamp on VIN: 1G1ND52J21
well this one won't be getting fixed. thanks for all the replies. i tested the pressure sensor and even tried a new one. the customer elected to not fix the vehical because in pennsylvania, our emissions testing state that if the needed repairs go over $250 th... Trouble codes: P0442.
2004 GMC Jimmy SLS 4.3L won't take fuel VIN: 1GKCT18X74
we did not end up repairing the vehicle it ended up at the dealership. he had previous work done and had to return. he did get the fuel sitiuation looked at when there. they ended up repacing the vent assembly. i would like to thank everyone for taking the tim...
1992 Saturn SL1 1.9L No Start, Cuts out, Stall, MIL Lamp on VIN: 1G8ZG549XN
Thank you for the quick responses to my post. The problem was the ICM. I did replace the crank sensor as suggested by everyone. It was inexpensive and easy to change by just reaching over the starter from underneath the car. I recall a Cavalier with a similar ... Trouble codes: 19 (ckpecm), 23 (iat), 48 (icmecm).
2003 Saturn L200 2.2L cooling fans VIN: 1G8JU54F13
found the problem with he cooling fans. with the scan tool you cant control the fans 1 and 2 on or off. fans running at high speed all times was unable to turn off with scan tool. scan tool shows ac high pressure. compressor off 71 psi, compressor on psi appro... Trouble codes: N0NE.
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