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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 26, 2011
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Open Help Requests for GM
Help Request Answers
1985 Chevrolet S10 Tahoe 2.8L Poor Idle Quality, Flooding VIN: 1GCDT14B8F
Truck ran poorly with no accelerator pump performance, vacuum leak at brake booster, weak choke heater, and fuel pump only capable of 12" hg and 4 psi. Installed new booster, fuel pump and filter, overhaul carburetor with Hygrade service kit. Now the truck wo...
1994 Chevrolet K2500 Silverado 6.5L Starter VIN: 1GCGK29F9R
The starter drive comes out and stops when it hits the leading edge of the teeth on the flywheel. It will crank fine if the teeth are line up so the drive teeth can go in-between the flywheel teeth. If it hits the edge of a tooth it just stops there. If you mo...
1996 Chevrolet C1500 Silverado 5.0L engine swap VIN: 1GTEC14M7T
Posting for another shop about swapping in a used 1998 5.7, that came out of a 4wd auto. Balance, fuel delivery, or what other unforseen problems, vehicle is a 5.0 5spd manual 2wd. THANKS KINDLY! Phil Fuhrman
1997 Chevrolet Astro 4.3L No Start VIN: 1GN349HN7V
Vehicle towing here for over week, they cranking but won' t running, have a sparks and fuel, fuel pressure 58 psi koeo, engine code p1351-ignition high voltage circuit, found out customer already did replaced vcm, ignition module, ignition coil, fuel injectors... Trouble codes: P1351 (Ignition high voltage circuit)
1997 Chevrolet Venture 3.4L No Start VIN: 1GNDX03E7V
Newbie request here, but I'm pulling my hair out. Cant find the 3rd connection harness on my coil pack. The 3 pin on the d/s rear. Traced entire harness. There's about 10 connections in the back area. Not finding anything. Mitchell is no help. Wish I coul...
1998 Chevrolet C3500 Silverado 5.7L Hesitation, Cuts out, Stall VIN: 1GBGC34R9W
This truck is very well maintained and is driven nicely, not abused. On Accelleration, at full throttle, at about 40-45 mph it will start to bog really bad. Starts to knock and miss fire. It will keep running bad until you pull over and let it idle. It will re... Trouble codes: P0300 (Muliple Misfires)
1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7X
Hllo everyone, thanks in advance, well here i am with this 99 chevy blazer 4.3l a/t that got towed in to my shop with a non starting situation,it cranks over but don't start. Apparently the customer was driving on the hwy about 50 mph when the truck die he sai...
1999 Chevrolet Malibu 3.1L suspension VIN: 1G2ND52M8X
This car pulls to the left. I had a post on this awhile back and thought it was fixed hadn't heard from the customer. Now I find out it still pulls. It has had new front coil springs and struts. New strut mounts. New brake calipers and hoses. It has been align...
2004 Chevrolet Aveo 1.6L radiator VIN: K4T052664B
cooling system smell with dex cool
2005 Chevrolet Silverado 1500 5.3L No Start VIN: 2GCEC19T95
The truck is an intermittent no start. There is a P1626 stored in the PCM. The ignition cylinder housing has been changed, the the key reader has been relearned, but the intermittent problem still exists. With the Tech2 hooked up while the vehicle is acting up...
2007 Chevrolet Suburban 1500 Z71 5.3L Radiator VIN: 1GNFK16347
Hi all! I have here a Suburban that has a timing cover leak. Coolant is milky but oil and transmission fluid is not. All coolant hoses are contaminated. I would think that either the trans or oil will be milky. This vehicle also consumes oil. Any help apprecie...
2009 Chevrolet HHR LT 2.2L cooling system VIN: 3GNCA23B69
This has me pulling what's left of my hair out! The coolant temperature of this 2009 Chevy HHR with a 2.2l engine, after a 4-5 mile road test and sitting still @ idle/in gear will start to climb to approx. 245 degrees. Cooling fan comes on @ 220 degrees, coola...
1997 GMC Jimmy SL 4.3L Trans. Fuse #24 VIN: 1GKDT13W5V
Vehicle blows fuse #24 as soon as it is installed. A couple of questions, fuse#24 , according to Alldata should not have power when Key is off, this fuse has power all of the time. I understand the Trans. Codes because of the blown fuse. I don't understand the...
1995 Pontiac Bonneville SE 3.8L No Start, Cuts out VIN: 1G2HX52K4S
Hello Everyone, We have a 1995 Bonneville with an odd problem. After starting the car for the first time of the day, it will idle fine. As soon as you try to give it a little gas, the idle goes up to 2,000-2,500, you hear a popping, and it cuts out. After tha...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac Eldorado ETC 4.6L Theft VIN: 1G6ET1293V
all fixed. It was a bad BCM,I unplugged it and got communication back to the other modules, so i took the bcm apart and it was melted inside. Got another one, everything works now. Thnaks for the help
2006 Cadillac DTS 4.6L cooling temp VIN: 1G6KD57Y66
1996 Chevrolet K1500 Silverado 5.7L transfer case shifter VIN: 2GCEK19RXT
finally traced to a bad TCCM causing the non-engagement, replaced the TCCM, she's working now, until something else in the "push & pray" 4wd system takes a crap!
1996 Chevrolet Astro 4.3L No Start, no serial data VIN: 1GNDM19W2T
we repaired a broken wire inside cab going to the dlc. it was grounding to the firewall. also replaced plugs, wires rotor, pick-up coil and cap. fuel pump also decided to fail on us at the time of diag so that was replaced as well. unbelievable this van is sti...
2007 Chevrolet Silverado 1500 LS 4.8L MIL Lamp on VIN: 2GCEK19CX7
We finally took the truck to the Chevrolet dealer It took them over 3 days to figure it out. The dealer mechanic had to call the manufacturer and get a new BCI code, (a new script for programming) designed specifically for this truck. They designed 3 until f...
2007 Chevrolet Silverado 2500 HD Classic WT 6.0L high idle VIN: 1GCHC24K97
I took vehicle to the shop because I could not find a vaccuum leak or any readings out of range on scanner. Dealership stated that it needed relearned and reprogrammed. It is fixed. This tells me that I need a scanner that does more than just read pids and is ... Trouble codes: P0507 (high idle detected), P060D.
1998 GMC K2500 Sierra SL 5.7L No Start VIN: 1GTGK29RXW
Sorry for taking so long for this fix. I went on vacation and got back on monday. Thanks to all who responded to my help. In the original help request. I forgot to mention that I did check for exhaut restriction, and found no obstruction, also cleanned the MAF...
2000 GMC Yukon XL 1500 SLE 5.3L Misfire VIN: 3GKFK16T4Y
Awesome IATN!!! The customer finally brought the vehicle back in so I could finish testing. It's not fixed yet but I know what's wrong. Customer will scedule it in for repair later. Jeremy from Indiana hit it right on. there is a valve intermitently sticking... Trouble codes: P0300 (Random multiple misfire).
2002 GMC Sierra 2500 HD 6.0L Spark Knock/Detonate VIN: 1GTHK23UX2
Thank you for all of the suggestions. I did do a decarboinztion procedure twice, which cured the cold start knock, but the "spark knock" was still there. I had failed to mention that the boss had replaced a broken exhaust manifold bolt. He however failed to...
2003 GMC Envoy SLE 4.2L shift VIN: 1GKDT13S73
Customer declined further diagnosis. He will return when the problem becomes more regular.
2007 Pontiac Grand Prix GXP 5.3L compressor VIN: 2G2WC55C67
thank you for taking the time to help me with this car. i am closing this as being fixed.i did read through the owners manual and i did not see anything about the a.c. the general consensus that this is normal. it also helped that chris has the same car. i spo...
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