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Prev Professional Automotive Repair Technical Discussions for September 20, 2007
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Open Help Requests for GM
Help Request Answers
1992 Buick Park Avenue 3.8L No Start, Poor Idle Quality, Cuts out VIN: 1G4CW53L9N
Howdy guys and help please!!! One of my delivery drivers dropped this buick off with me. He said it dies after he drives it for a while. He self diagnosed and ask me to put a Delco pump in even though we said not the problem. he picked up the car and it died a... Trouble codes: 17 (Spark reference circuit)
1994 Buick LeSabre Custom 3.8L fast idle VIN: 1G4HP2L3RH
Car comes to me with a complaint of random uncontrolled engine rpm's. At first it was hard to duplicate so checked throttle cable & mechanical items at throttle body. Seems OK. So I checked for codes & data. No codes found and all parameters OK. Checked for va...
1998 Cadillac DeVille Concours 4.6L Suspension VIN: 1G6KF549XW
thanks for checking this one out! car came in with service stability light on. it originally had codes c1255, 1281, 1282 and 1287 stored. 1255 indicated an internal problem with abs control module and since all powers and grounds were good, we replaced with a ...
2004 Cadillac Escalade EXT 6.0L Sound System VIN: GYEK62N44G
Hi everybody, i have this fine Escalade with sound system problem, the radio is on but no sound is coming up, sometimes if i off ignition and on it again the sound will come for like few seconds and go off again, i beleive is the amplifier, can you help me to ...
1992 Chevrolet Cavalier RS 3.1L Poor Idle Quality, Stall
hi this car drives ok but idles rough and will occassionally will stall at idle.no codes,the only data that looks bad on the scanner is the block learn went down from 128 to 100 indicating computer thinks its rich and is trying to take away fuel(correct?).The ...
1996 Chevrolet S10 2.2L shift linkage VIN: 1GCCS1448T
This S-10 Came In Shop Today With Complaint Of Hard Putting In & Out Of Park.I Removed Linkage At Transmission And Shifter Moved Thru All Gears Just Fine.Tried To Move Linkage At Transmission Would Not Move To Next Position But Would Move A Little.I Then Remov...
2004 Chevrolet Venture LS 3.4L wire harnesses VIN: 1GNDU03E54
Good day to all. This van is getting water under the front floor carpets, like so many other GM FWDs. Does anyone know a way to prevent this? I've searched the archives and read suggestions to seal the wiring against the water, but there ought to be a better w...
2005 Chevrolet Malibu LS 3.5L Manual Heater Systerm VIN: 1G1ZT52875
Hello to everyone This car came in with customer complaining the heater wasn't getting hot. I have checked the coolant quality and level and that is good. I connected the scan tool and checked the engine coolant temp. It was 195 degrees. I felt of the heater h...
2005 Chevrolet Colorado Z85 2.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GCCS19855
This colorado came in missing on all 4 cyl. ,evenly, cant tell that one is worse than others.Power reduced message, and MIL on. I removed the cam phase solenoid and activated it, the pintle does move. It reads 0 on scanner. I am not familiar with this engine. ... Trouble codes: P0017 (CKP-Exhaust camshaft Position), P0300 (Random missfire)
2006 Chevrolet Impala LS 3.5L Hesitation, Surge VIN: 2G1WB58N16
this is a security car that has probably been driven really hard for it's short but high mileage lifespan. the vehicle runs reasonably well at idle however when you accelerate from a stop the rpm will jump to 2500 right from idle. o.k. if you want to drag race... Trouble codes: P0121 (t.p.s. performance)
1996 GMC K1500 Sierra SL 5.7L Hesitation, Surge, Cuts out VIN: 1GTEK19R7T
HELP this truck runs great but intermittently when you are at a stop light unit will stall or surge while monitoring scan tool pids short term goes through the roof to 50% and ltft is 25% iac drops to 22 and o2 sensors read lean all the time checked intake for...
2003 GMC Sierra 2500 HD SLE 6.6L trans VIN: 1GTHK29153
1994 Oldsmobile 88 Royale 3.8L Stall VIN: 1G3HN52L8R
this vehicle came in intrmittent stall no restart for at least one hour code present p1640 and p1670 Trouble codes: P1640, P1670
1997 Oldsmobile 88 Royale 3.8L chime module VIN: 1G3HN52K7V
chime intermittently comes on while driving. we found that stepping on the brakes in the shop koeo in gear will cause the chime to sound at each pedal tap. in gear activating the door lock switches will cause the chime to ding. opening the glove box will cause...
1999 Oldsmobile Aurora 4.0L interior VIN: 1G3GR62C5X
Calling all Techs, we've got a buzzing noise under dash at any time. Customer states noise, trunk was popping open & lites were flashing at the same time. We fully disconnected aftermarket alarm/remote start module. Now she only hears buzzing noise. I've drive...
1997 Pontiac Grand Am GT 3.1L Timing ? VIN: 1G2NW52M4V
At our customers request we replaced his engine with one that he picked up. Problem... his engine was a 2003 his car is a 1997 The yard he used said no problem just switch intake and sensors... We did and now have a no start seems like it is out of time... Aft...
1997 Pontiac Grand Prix GTP 3.8L No Start, Cuts out, Stall VIN: 1G2WP5214V
This car is giving me a big headache and I am in need of serious help. The car dies out intermittently no rhyme or reason. The car starts back up, runs for about 5 seconds and then dies. I know what everyone is thinking. RESISTOR! No I've replaced it twice thi...
1993 Saturn SL2 1.9L No Start, Poor Idle Quality, Stall, Misfire VIN: 1G8ZJ5579P
I have this 93 saturn 1.9l that after if gets hot it starts to misfire and then stall and is a crank no start .It started out with codes 26&27 .we replaced the solenoids knowing they have a problem , now it has the 27 and still runs the same .I cant find any i... Trouble codes: 27 (quick quad drive module)
2000 Saturn LS1 2.2L blower motor VIN: 1G8JU52F2Y
Help all Saturn techs. Car came in for blower motor not working. Tested found power and ground at blower motor and replaced it as well as blower resistor card per tsb. Now the blower motor will quit working for 1 - 2 seconds and then come right back on. Not lo...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Cadillac Eldorado 4.9L ABS, Master cyl? VIN: 1G6EL13B4N
Extremly sorry for the late closing of this post, computer issues... Thanks to all who replied to my request. Even though i had good flow out of master cylinder, and no restrictions noted throughout brake system, a master cylinder was the fix for this problem...
1997 Cadillac Catera 3.0L tires VIN: WO6VR52R4V
Most every one feels that the springs may be weak or something is bent. We checked the ride height and it was actually about an inch higher in the front and rear than it should have been. There is a car lot going out of business here so they wanted new tires o...
2001 Cadillac DeVille DTS 4.6L brakes and steering wheel VIN: 1G6KF579X1
Well we put well over a 100 miles on this car and it never acted up. we did find a tsb about some wires for the steering wheel sensor being out of place(pulling on the wires when the telescopic wheel is moved) rerouted wires to where they should be. no idea if...
2000 Chevrolet Blazer LS 4.3L headlamps VIN: 1GNDT13W6Y
Most of the replies were to replace the multi-function switch on the column. I remembered fixing a full size p/up with the same problem about 4 yrs ago.I am waitng on the part and am confident this wil fix the vehicle. Thank you all
2004 GMC Yukon XL 1500 Denali 6.0L hard start VIN: 1GKFK66U74
As I suspected and 5 of you confirmed that it is not normal for this to drop fuel pressure after pump turns off. There is no pressure regulator on the fuel rail on the 6.0L. It is in the pump module. I pulled the pump and found the flexible fuel pressure lin...
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