GM Automotive Technicians Technical Discussion and Fixes for Jun 27, 2011 - iATN (Members Only)

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Open Help Requests for GM

	Help Request	Answers
	1985 Buick Riviera 3.8L radio VIN: 1G4EZ57BXG Pulled radio out to inspect. You can hear static. No music. Unclear where antena plugs in. not a typical antena plug. The antena goes up and down when radio is turned on, just static.radio scans for stations. No music. Thanks in advance for the help.	View
	1982 Chevrolet C20 Silverado 6.2L Poor Idle Quality, Stall VIN: 1GTEK14CXC this vehicle when running acts like it is over fueling, lots of smoke out tailpipe blueish, after a while will start burning your eyes, have not worked on many of these old beast, there is 12 volts to injection pump, took a fuel sample it looks ok and smells l...	View
	1994 Chevrolet Astro 4.3L Rear Brakes VIN: 1GBDM19Z1R THANK YOU FOR TAKEING THE TIME TO HELP. I have a 94 astro that the rear brakes lock up on the lightest pedal app. Have changed entire brake system (see related repairs). Brakes ok for a week or so than will lock up again. Have marked adjusters to see if over a...	View
	1996 Chevrolet Astro 4.3L Converter/ seal VIN: 1GNDM19W9T My wife's Astro developed a serious leak from inside the bell housing when hot. I pulled the trans and the old seal appeared to be broken down, shedding black residue. The torque converter bushing was tight and the shaft surface on the converter looked very go...	View
	2001 Chevrolet Suburban 1500 5.3L overheat This vehicle starts to overheat after driving for 20 min. I can also get it to overheat in the shop if I rev it up for about 10 - 15 min. All the hoses are VERY hot. Disconnected a heater hose, and coolant shoots out past the engine, so I would assume I have a...	View
	1995 GMC C2500 Sierra SL 5.7L 1-2 shift VIN: 1GTGC29K0S I have been working on this truck for the pass 4 weaks it has a 4l80e the problem I am having is that it gose into failsafe. It came to me from another shop thay put a new trans plug in it becouse the wires were shorting together. After thay did this the trans...	View
	2000 GMC Jimmy SLT 4.3L Starting VIN: 1GKDT13W2Y Vec. was towed in with crank no start tested fuel pressure,spark {weak} Checked pass system light flashing run relearn procedure, Changed cap rotor and plugs had origanal parts found bulliten on c211 conector checked seemed ok Eng feels like it wants to start ...	View
	2002 GMC W3500 Forward W3S042 4.8L altenator VIN: J8DB4B1432 altenator currently not charging ! indicator lamps for battery,brake,brake booster and abs are lit. however when you accelerate past 65mph lights go out and brakes act normally. otherwise brakes have no assist.very little material out there for diagnostics. th...	View
	2001 Pontiac Aztek 3.4L Electronic VIN: 3G7DAO3E71 Dear Fellow techs thank you for your help in advance. We have this aztec that the ac compressor is inop. We have replaced bcm and had dealer reprogram. We now get a code B2552 .I have not found a definition for this code.Any help will be appreciated.	View
	2002 Pontiac Sunfire SE 2.2L MIL Lamp on VIN: 1G2JB52452 this is for all gm techs, car runs fine but after 10 to 15 miles ac blower motor quits, traction control light comes on,all gauges stop working,service engine light comes on, then security light comes on. car still runs fine. if you stop car and restart everyt...	View
	2008 Saturn Astra XE 1.8L a/c VIN: W08AR67198 I had this car come in with the complaint of,the a/c was cool while driving and would warm up when the customer was stopped. We tested the pressures and they were 50-60psi low side and 125psi high side. The dealer dio was it needed a expansion valve or a compr...	View

Fixes & Summaries for GM

	Fix/Summary	Answers
	1992 Chevrolet C2500 Silverado 5.7L Radio VIN: 2CGCGC29KO Thanks to all who helped, James got it right on with a TSB from Chevy that stated that the transmission's connection to the PCM was the issue. I removed the Transmission Fuse and no more buzzing. Chevy makes a $34 inline capacitor, I can't believe I've suffere...	11
	1999 Chevrolet K2500 Suburban 7.4L Lifters VIN: 1GNGK26JXX Many of the replies had the same thought process i did, we put a new baldwin filter even though it already had two filters replaced throughout this process. We also ran sea foam through the oil and the noise has been eliminated, so it was either one or the ot...	16
	2002 Chevrolet Monte Carlo LS 3.4L Delay VIN: 2G1WW12E82 Removed wiper motor/trans assembly to replace motor/module and found someone else had done this before me and installed a salvage yard motor/module assembly. This got me thinking some more and after reviewing the installation procedure it made me realize that ...	9
	2002 Chevrolet Cavalier 2.2L No Start I would like to thank all the good replies. I decided that before I yank the aftermarket alarm out, I would try to get info online about this system... Well after the 10 minute relearn..recycle the key off/on 4 times...Do it twice...Bingo Real Security..online...	18
	2003 Chevrolet Tahoe LT 5.3L mode door operation VIN: 1GNEK13T53 thank you for the replies. unfourtantly the customes declined the repairs needed to the recurcliation door actuator. i was able to find info that with other fault codes the mode door will default to feet and defrost. I would have liked to see the foam/rubber s...	3

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